e* REESE LIBRARY OF THK UNIVERSITY OF CALIFORNIA. Received Accessions No._ /j/?/. Shelf No... .. THE WORKS OF CHARLES KINGSLEY. VOLUME XIX. SCIENTIFIC LECTURES AND ESSAYS. THE WORKS OF CHARLES KINGSLEY. VOLUME XIX. SCIENTIFIC LECTURES AND ESSAYS. LiBHAKYfl x- i \' I, !• S 1 T V O K MACMILLAN AND CO. 1880. ; UN IVKKSJTV OF SCIENTIFIC LECTURES AND ESSAYS. CHARLES DICKENS AND EVANS, CRYSTAL PALACE PRESS, CONTENTS. PAGE TOWN GEOLOGY— PREFACE . . ... . . 3 I. THE SOIL OF THE FIELD ...... 29 II. THE PEBBLES IN THE STREET 47 III. THE STONES IN THE WALL 70 IV. THE COAL IN THE FIRE V. THE LIME IN THE MORTAR Ill VI. THE SLATES ON THE EOOF 126 ON BIO-GEOLOGY 155 ' THE STUDY OF NATURAL HISTORY . . . .181 x CONTENTS. PAGE „ SUPERSTITION .... . • .••'.' >; ; . . 201 THOUGHTS IN A GEAVEL-PIT . . . . .261 HOW TO STUDY NATURAL HISTORY . .289 THE NATURAL THEOLOGY OF THE FUTURE . . 313 SCIENTIFIC LECTURES AND ESSAYS. a ni TOWN GEOLOGY. sc. L I H K A R V TJNIVKKS ITY OF I CALlFOItNIA.J TOWN GEOLOGY. PREFACE. THIS little book, including the greater part of this Preface, has shaped itself out of lectures given to the young men of the city of Chester. But it does not deal, in its present form, with the geology of the neighbourhood of Chester only. I have tried so to recast it, that any townsman, at least in the manu- facturing districts of England and Scotland, may learn from it to judge, roughly perhaps, but on the whole accurately, of the rocks and soils of his own neighbour- hood. He will find, it is true, in these pages, little or nothing about those " Old Bed Sandstones," so interesting to a Scotchman ; and he will have to bear in mind, if he belong to the coal districts of Scotland, that the ' ' stones in the wall" there belong to much older rocks than those " New Eed Sandstones " of which this book treats ; and that the coal measures of Scotland, with the volcanic rocks which have disturbed them, are often very different in appearance to the English £ geology by direct experiment, do this : /The next rainy fla^— * the harder it rains the better — instead of sitting at home over the fire, and reading a book about geology, put on a macintosh and thick boots, and get away, I care not whither, provided you can find there running water. If you have not time to get away to a hilly country, then go to the nearest bit of turnpike road, or the nearest sloping field, and see in little how whole continents are made, and unmade again. Watch the rain raking and sifting with its million delicate fingers, separating the finer particles from the coarser, dropping the latter as soon as it can, and carrying the former downward with it toward the sea. Follow the nearest roadside drain where it runs into a pond, and see how it drops the pebbles the moment it enters the pond, and then the sand in a fan-shaped heap at the nearest end; but carries the fine mud on, and holds it suspended, to be gradually deposited at the bottom in the still water ; and say to yourself: Perhaps the sands which cover so many inland tracts were dropped by water, very near the shore of a lake or sea, and by rapid currents. Perhaps, -again, the brick clays, which are often mingled with these sands, were dropped, like the mud in the pond, in deeper water farther from the shore, and certainly in still water. But more. Suppose once more, then, that looking and watching a pond being cleared out, under the lowest layer of mud, you found — as you would find in any of those magnificent reservoirs so common in the Lancashire hills — a layer of vegetable soil, with grass and brushwood rooted in it. What would you say but : The pond has not been 'always 40 TOWN GEOLOGY. [i, full. It has at some time or other been dry enough to let a whole copse grow up inside it ? And if you found — as' you will actually find along some English shores — under the sand hills, perhaps a bed of earth with shells and bones ; under that a bed of peat; under that one of blue silt; under that a buried forest, with the trees upright and rooted ; under that another layer of blue silt full of roots and vegetable fibre; perhaps under that again another old land surface with trees again growing in it ; and under all the main bottom clay of the district — what would common sense tell you ? I leave you to discover for yourselves. It certainly would not tell you that those trees were thrust in there by a violent con- vulsion, or that all those layers were deposited there in a few days, or even a few years ; and you might safely indulge in speculations about the antiquity of the sestuary, and the changes which it has undergone, with which I will not frighten you at present. It will be fair reasoning to argue thus. You may not be always right in your conclusion, but still you. will be trying fairly to explain the unknown by the known. But have Rain and Rivers alone made the soil? How very much they have done toward making it you will be able to judge for yourselves, if you will read the sixth chapter of Sir Charles LyelFs new " Elements of Geology," or the first hundred pages of that admirable book, De la Beche's " Geological Observer;" and last, but not least, a very clever little book called "Rain and Rivers/' by Colonel George Greenwood. But though rain, like rivers, is a carrier of soil, it I.] THE SOIL OF THE FIELD. 41 is more. It is a maker of soil, likewise; and by it mainly the soil of an upland field is made, whether it be carried down to the sea or not. If you will look into any quarry you will see that however compact the rock may be a few feet below the surface, it becomes, in almost every case, rotten and broken up as it nears the upper soil, till you often cannot telF where the rock ends and the soil begins. Now this change has been produced by rain. First, mechanically, by rain in the shape of ice. The winter rain gets into the ground, and does by the rock what it has done by the stones of many an old building. It sinks into the porous stone, freezes there, expands in freezing, and splits and peels the stone with a force which is slowly but surely crumbling the whole of Northern Europe and America to powder. Do you doubt me ? I say nothing but what you can judge of yourselves. The next time you go up any mountain, look at the loose broken stones with which the top is coated, just underneath the turf. What has broken them up but frost ? Look again, as stronger proof, at the talus of broken stones — screes, as they call them in Scotland ; rattles, as we call them in Devon — which lie along the base of many mountain cliffs. What has brought them down but frost ? If you ask the country folk they will tell you whether I am right or not. If you go thither, not in the summer, but just after the winter's frost, you will see for your- selves, by the fresh frost- crop of newly-broken bits, that I am right. Possibly you may find me to be even more right than is desirable, by having a few angular stones, from the size of your head to that of your body, hurled at you by the frost-giants up above. 42 TOWN GEOLOGY. [i. If you go to the Alps at certain seasons, and hear the thunder of the falling rocks, and see their long lines — moraines, as they are called — sliding slowly down upon the surface of the glacier, then you will be ready to believe the geologist who tells you that frost, and probably frost alone, has hewn out such a peak as the Matterhorn from some vast tableland ; and is hewing it down still, winter after winter, till some day, where the snow Alps now stand, there shall be rolling uplands of rich cultivable soil. So much for the mechanical action of rain, in the shape of ice. Now a few words on its chemical action. Kain water is seldom pure. It carries in it carbonic acid ; and that acid, beating in shower after shower against the face of a cliff — especially if it be a lime- stone cliff — weathers the rock chemically; changing (in case of limestone) the insoluble carbonate of lime into a soluble bicarbonate, and carrying that away in water, which, however clear, is still hard. Hard water is usually water which has invisible lime in it ; there are from ten to fifteen grains and more of lime in every gallon of limestone water. I leave you to calculate the enormous weight of lime which must be so carried down to the sea every year by a single lime- stone or chalk brook. You can calculate it, if you like, by ascertaining the weight of lime in each gallon, and the average quantity of water which comes down the stream in a day ; and when your sum is done,, you will be astonished to find it one not of many pounds, but probably of many tons, of solid lime, which you never suspected or missed from the hills around. Again, by the time the rain has sunk through the soil, it is still less pure. It carries with it not only carbonic i.] THE SOIL OF THE FIELD. 43 acid, but acids produced by decaying vegetables — by the roots of the grasses and trees which grow above ; and they dissolve the cement of the rock by chemical action, especially if the cement be lime or iron. You may see this for yourselves, again and again. You may see how the root of a tree, penetrating the earth, discolours the soil with which it is in contact. You may see how the whole rock, just below the soil, has often changed in colour from the compact rock below, if the soil be covered with a dense layer of peat or growing vegetables. But there is another force at work, and quite as powerful as rain and rivers, making the soil of alluvial flats. Perhaps it has helped, likewise, to make the soil of all the lowlands in these isles — and that is, the waves of the sea. If you ever go to Parkgate, in Cheshire, try if you cannot learn there a little geology. Walk beyond the town. You find the shore pro- tected for a long way by a sea-wall, lest it should be eaten away by the waves. What the force of those waves can be, even on that sheltered coast, you may judge — at least you could have judged this time last year — by the masses of masonry torn from their iron clampings during the gale of three winters since. Look steadily at those rolled blocks, those twisted stanchions, if they are there still ; and then ask your- selves— it will be fair reasoning from the known to the unknown — What effect must such wave-power as that have had beating and breaking for thousands of years along the western coasts of England, Scotland, Ireland? It must have eaten up thousands of acres — whole shires, may be, ere now. Its teeth are strong enough, 44. TOWN GEOLOGY. [i. and it knows neither rest nor pity, the cruel hungry sea. Give it but time enough, and what would it not eat up ? It would eat up, in the course of ages, all the dry land of this planet, were it not baffled by another counteracting force, of which I shall speak hereafter. As you go on beyond the sea-wall, you find what it is eating up. The whole low cliff is going visibly. But whither is it going? To form new soil in the aestuary. Now you will not wonder how old harbours so often become silted up. The sea has washed the land into them. But more, the sea-currents do not allow the sands of the sestuary to escape freely out to sea. They pile it up in shifting sand-banks about the mouth of the sestuary. The prevailing sea-winds, from whatever quarter, catch up the sand, and roll it up into sand-hills. Those sand-hills are again eaten down by the sea, and mixed with the mud of the tide-flats, and so is formed a mingled soil, partly of clayey mud, partly of sand ; such a soil as stretches over the greater part of all our lowlands. Now, why should not that soil, whether in England or in Scotland, have been made by the same means as that of every sestuary. You find over great tracts of East Scotland, Lancashire, Norfolk, etc., pure loose sand just beneath the surface, which looks as if it was blown sand from a beach. Is it not reasonable to suppose that it is ? You find rising out of many lowlands, crags which look exactly like old sea-cliffs eaten by the waves, from the base of which the waters have gone back. Why should not those crags be old sea-cliffs? Why should we not, following our rule of explaining the unknown by the I.] THE SOIL OF THE FIELD. 45 known, assume that such they are till someone gives us a sound proof that they are not ; and say — These great plains of England and Scotland were probably once covered by a shallow sea, and their soils made as the soil of any tide-flat is being made now ? But you may kay, and most reasonably, ' ' The tide- flats are just at the sea-level. The whole of the lowland is many feet above the sea; it must therefore have been raised out of the sea, according to your theory : and what proofs have you of that ? " Well, that is a question both grand and deep, on which I shall not enter yet ; but meanwhile, to satisfy you that I wish to play fair with you, I ask you to believe nothing but what you can prove for yourselves. Let me ask you this : suppose that you had proof positive that I had fallen into the river in the morning; would not your meeting me in the evening be also proof positive that somehow or other I had in the course of the day got out of the river ? I think you will accept that logic as sound. Now if I can give you proof positive, proof which you can see with your own eyes, and handle with your own hands, and alas ! often feel but too keenly with your own feet, that the whole of the lowlands were once beneath the sea; then will it not be certain that, some- how or other, they must have been raised out of the sea again ? And that I propose to do in my next paper, when I speak of the pebbles in the street. Meanwhile I wish you to face fairly the truly grand idea, which all I have said tends to prove true — that all the soil we see is made by the destruction of older soils, whether soft as clay, or hard as rock ; that rain, 46 TOWN GEOLOGY. [i. rivers, and seas are perpetually melting and grinding up old land, to compose new land out of it; and that it must have been doing so, as long as rain, rivers, and seas have existed. " But how did the first land of all get made ? " I can only reply : A natural question : but we can only answer that, by working from the known to the unknown. While we are finding out how these later lands were made and unmade, we may stumble on some hints as to how the first primeval continents rose out of the bosom of the sea. And thus I end this paper. I trust it has not been intolerably dull. But I wanted at starting to show my readers something of the right way of finding out truth on this and perhaps on all subjects; to make some simple appeals to your common sense ; and to get you to accept some plain rules founded on common sense, which will be of infinite use to both you and me in my future papers. I hope, meanwhile, that you will agree with me, that there is plenty of geological matter to be seen and thought over in the neighbourhood of any town. Be sure, that wherever there is a river, even a drain ; and a stone quarry, or even a roadside bank ; much more where there is a sea, or a tidal sestuary, there is geology enough to be learnt, to explain the greater part of the making of all the continents on the globe. L I T5 K A K V X I v i-: i; s i T v « i !•' n. THE PEBBLES IN THE STKEET. IF you, dear reader, dwell in any northern town, you will almost certainly see paving courts and alleys, and sometimes — to the discomfort of your feet — whole streets, or set up as bournestones at corners, or laid in heaps to be broken up for road-metal, certain round pebbles, usually dark brown or speckled gray, and ex- ceedingly tough and hard. Some of them will be very large — boulders of several feet in diameter. If you move from town to town, from the north of Scotland as far down as Essex on the east, or as far down as Shrewsbury and Wolverhampton (at least) on the west, you will still find these pebbles, but fewer and smaller as you go south. It matters not what the rocks and soils of the country round may be. However much they may differ, these pebbles will be, on the whole, the same everywhere. But if your town be south of the valley of the Thames, you will find, as far as I am aware, no such pebbles there. The gravels round you will be made up entirely of rolled chalk flints, and bits of beds 48 TOWN GEOLOGY. [n. immediately above or below the chalk. The blocks of " Sarsden " sandstone — those of which Stonehenge is built — and the "plum-pudding stones" which are sometimes found with them, have no kindred with the northern pebbles. They belong to beds above the chalk. Now if, seeing such pebbles about your town, you inquire, like a sensible person who wishes to under- stand something of the spot on which he lives, whence they come, you will be shown either a gravel-pit or a clay-pit. In the gravel the pebbles and boulders lie mixed with sand, as they do in the railway cutting- just south of Shrewsbury ; or in huge mounds of fine sweet earth, as they do in the gorge of the Tay about Dunkeld, and all the way up Strathmore,, where they form long grassy mounds — tomauns as they call them in some parts of Scotland — askers as they call them in Ireland. These mounds, with their sweet fresh turf rising out of heather and bog, were tenanted — so Scottish children used to believe^-by fairies. He that was lucky might hear inside them, fairy music, and the jingling of the fairy horses' trappings. But woe to him if he fell asleep upon the mound, for he would be spirited away into fairyland for seven years, which would seem to him but one day. A strange fancy ; yet not so strange as the actual truth as to what these mounds are, and how they came into their places. Or again, you might find that your town's pebbles and boulders came out of a pit of clay, in which they were stuck, without any order or bedding, like plums and raisins in a pudding. This clay goes usually by the name of boulder-clay. You would see such near any town, in Cheshire and Lancashire ; or along Leith IL] THE PEBBLES IN THE STREET. 49 shore, near Edinburgh ; or, to give one more instance out of hundreds, along the coast at Scarborough. If you walk along the shore southward of that town, you will see, in the gullies of the cliff, great beds of sticky clay, stuffed full of bits of every rock between the Lake mountains and Scarborough, from rounded pebbles of most ancient rock down to great angular fragments of ironstone and coal. There, as elsewhere, the great majority of the pebbles have nothing to do with the rock on which the clay happens to lie, but have come, some of them, from places many miles away. Now if we find spread over a low land pebbles composed of rocks which are only found in certain high lands, is it not an act of common sense to say — These pebbles have come from the highlands ? And if the pebbles are rounded, while the rocks like them in the highlands always break off in angular shapes, is it not, again, an act of mere common sense to say — These pebbles were once angular, and have been rubbed round, either in getting hither or before they started hither ? Does all this seem to you mere truism, my dear reader ? If so, I am sincerely glad to hear it. It was not so very long ago that such arguments would have been considered, not only no truisms, but not even common sense. But to return, let us take, as an example, a sample of these boulder clay pebbles from the neighbourhood of Liverpool and Birkenhead, made by Mr. De Ranee, the government geological surveyor : Granite, greenstone, felspar porphyry, felstone, quartz rock (all igneous rocks, that is, either formed SC. E 50 TOWN GEOLOGY. [IT. by, or altered by volcanic heat, and almost all found in the Lake mountains), 37 per cent. Silurian grits (the common stones of the Lake mountains deposited by water), 43 per cent. Ironstone, 1 per cent. Carboniferous limestone, 5 per cent. Permian or Triassic sandstones, i.e. rocks imme- diately round Liverpool, 12 per cent. Now, does not this sample show, as far as human common sense can be depended on, that the great majority of these stones come from the Lake mountains, sixty or seventy miles north of Liverpool ? I think your common sense will tell you that these pebbles are not mere concretions ; that is, formed out of the substance of the clay after it was deposited. The least knowledge of mineralogy would prove that. But, even if you are no mineralogist, common sense will tell you, that if they were all concreted out of the same clay, it is most likely that they would be all of the same kind, and not of a dozen or more different kinds. Common sense will tell you, also, that if they were all concreted out of the s'ame clay, it is a most extraordinary coincidence, indeed one too strange to be believed, if any less strange explanation can be found — that they should have taken the composition of different rocks which are found all together in one group of mountains to the northward. You will surely say — If this be granite, it has most probably come from a granite mountain ; if this be grit, from a grit- stone mountain, and so on with the whole list. Why are we to go out of our way to seek improbable explanations, when there is a probable one staring us in the face ? ii.] THE PEBBLES IN THE STREET. 51 Next — and this is well worth your notice — if you will examine the pebbles carefully, especially the larger ones, you will find that they are not only more or less rounded, but often scratched ; and often, too, in more than one direction, two or even three sets of scratches crossing each other ; marked, as a cat marks an elder stem when she sharpens her claws upon it ; and that these scratches have not been made by the quarrymen's tools, but are old marks which exist — as you may easily prove for yourself — while the stone is still lying in its bed of clay. Would it not be an act of mere common sense to say — These scratches have been made by the sharp points of other stones which have rubbed against the pebbles somewhere, and somewhen, with great force ? So far so good. The next question is — How did these stones get into the clay ? If we can discover that, we may also discover how they were rounded and scratched. We must find a theory which will answer our question ; and one which, as Professor Huxley would say, l ' will go on all-fours," that is, will explain all the facts of the case, and not only a few of them. What, then, brought the stones ? We cannot, I think, answer that question, as some have tried to answer it, by saying that they were brought by Noah's flood. For it is clear, that very violent currents of water would be needed to carry boulders, some of them weighing many tons, for many miles. Now Scripture says nothing of any such violent currents ; and we have no right to put currents, or any other imagined facts, into Scripture out of our own heads, and then argue from them as if not we, but the text of Scripture, had asserted their existence. E 2 52 TOWN GEOLOGY. [n. But still, they may have been rolled hither by water. That theory certainly would explain their being rounded; though not their being scratched. But it will not explain their being found in the clay. Kecollect what I said in my first paper : that water drops its pebbles and coarser particles first, while it carries the fine clayey mud onward in solution, and only drops it when the water becomes still. Now currents of such tremendous violence as to carry these boulder stones onward, would have carried the mud for many miles farther still ; and we should find the boulders, not in clay, but lying loose together, pro- bably on a hard rock bottom, scoured clean by the current. That is what we find in the beds of streams ; that is just what we do not find in this case. But the boulders may have been brought by a current, and then the water may have become still, and the clay settled quietly round them. What ? Under them as well as over them ? On that theory also we should find them only at the bottom of the clay. As it is, we find them scattered anywhere and everywhere through it, from top to bottom. So that theory will not do. Indeed, no theory will do which supposes them to have been brought by water alone. Try yourself, dear reader, and make experiments, with running water, pebbles, and mud. If you try for seven years, I believe, you will never contrive to make your pebbles lie about in your mud, as they lie about in every pit in the boulder clay. Well then, there we are at fault, it seems. We have no explanation drawn from known facts which will do — unless we are to suppose, which I don't think you will do, that stones, clay, and all were blown I n.] THE PEBBLES IN THE STEEET. 53 hither along the surface of the ground, by primeval hurricanes, ten times worse than those of the West Indies, which certainly will roll a cannon a few yards, but cannot, surely, roll a boulder stone a hundred miles. Now, suppose that there was a force, an agent, known — luckily for you, not to you — but known too well to sailors and travellers ; a force which is at work over the vast sheets of land at both the north and south poles ; at work, too, on every high mountain range in the world, and therefore a very common natural force ; and suppose that this force would explain all the facts, namely — How the stones got here ; How they were scratched and rounded ; How they were imbedded in clay ; because it is notoriously, and before men's eyes now, carrying great stones hundreds of miles, and scratching and rounding them also ; carrying vast deposits of mud, too, and mixing up mud and stones just as we see them in the brick-pits, — Would not our common sense have a right to try that explanation ? — to suspect that this force, which we do not see at work in Britain now, may have been at work here ages since ? That would at least be reasoning from the known to the unknown. What state of things, then, do we find among the highest mountains ; and over whole countries which, though not lofty, lie far enough north or south to be permanently covered with ice ? We find, first, an ice-cap or ice-sheet, fed by the winter's snows, stretching over the higher land, and crawling downward and outward by its own weight, along the valleys, as glaciers. 54 TOWN GEOLOGY. [n, We find underneath the glaciers, first a moraine- prof onde, consisting of the boulders and gravel,, and earth, which the glacier has ground off the hillsides, and is carrying down with it. These stones, of course, grind, scratch, and polish each other ; and in like wise grind, scratch, and polish the rock over which they pass, under the enormous weight of the superincumbent ice. We find also, issuing from under each glacier a stream, carrying the finest mud, the result of the grinding of the boulders against each other and the glacier. We find, moreover, on the surface of the glaciers, moraines superieures — long lines of stones and dirt which had fallen from neighbouring cliffs, and are now travelling downward with the glaciers. Their fate, if the glacier ends on land, is what was to be expected. The stones from above the glacier fall over the ice-cliff at its end, to mingle with those thrown out from underneath the glacier, and form huge banks of boulders, called terminal moraines, while the mud runs off, as all who have seen glaciers know, in a turbid torrent. Their fate, again, is what was to be expected if the glacier ends, as it commonly does in Arctic regions, in the sea. The ice grows out to sea-ward for more than a mile sometimes, about one-eighth of it being above water, and seven-eighths below, so that an ice-cliff one hundred feet high may project into water eight hundred feet deep. At last, when it gets out of its depth, the buoyancy of the water breaks it off in ice- bergs, which float away, at the mercy of tides and currents, often grounding again in shallower water, II.] THE PEBBLES IX THE STEEET. 55 and ploughing the sea-bottom as they drag along it. These bergs carry stones and dirt, often in large quantities ; so that, whenever a berg melts or capsizes, it strews its burden confusedly about the sea-floor. Meanwhile the fine mud which is flowing out from under the ice goes out to sea likewise, colouring the water far out, and then subsiding as a soft tenacious ooze, in which the stones brought out by the ice are imbedded. And this ooze — so those who have examined it assert — cannot be distinguished from the brick-clay, or fossiliferous boulder-clay, so common in the North. A very illustrious Scandinavian explorer, visiting Edinburgh, declared, as soon as he saw the sections of boulder-clay exhibited near that city, that this was the very substance which he saw forming in the Spitzbergen ice-fiords.* I have put these facts as simply and baldly as I can, in order that the reader may look steadily at them, without having his attention drawn off, or his fancy excited, by their real poetry and grandeur. Indeed, it would have been an impertinence to have done otherwise ; for I have never seen a live glacier, by land or sea, though I have seen many a dead one. And the public has had the opportunity, lately, of reading so many delightful books about " peaks, passes, and glaciers," that I am bound to suppose that many of my readers know as much, or more, about them than I do. * See a most charming paper on " The Physics of Arctic Ice," by Dr. Robert Brown of Campster, published in the Quarterly Journal of the Geological Society, June, 1870. This article is so remarkable, not only for its sound scientific matter, but for the vividness and poetic beauty of its descriptions, that I must express a hope that the learned author vfill some day enlarge it, and publish it in a separate form. 56 TOWN GEOLOGY. [n. But let us go a step farther; and, bearing in our minds what live glaciers are like, let us imagine what a dead glacier would be like ; a glacier, that is, which had melted, and left nothing but its skeleton of stones and dirt. We should find the faces of the rock scored and polished, generally in lines pointing down the valleys, or at least outward from the centre of the highlands, and polished and scored most in their upland or weather sides. We should find blocks of rock left behind, and perched about on other rocks of a different kind. We should find in the valleys the old moraines left as vast deposits of boulder and shingle, which would be in time sawn through and sorted over by the rivers. And if the sea-bottom outside were upheaved, and became dry land, we should find on it the remains of the mud from under the glacier, stuck full of stones and boulders iceberg-dropped. This mud would be often very irregularly bedded ; for it would have been disturbed by the ploughing of the icebergs, and mixed here and there with dirt which had fallen from them. Moreover, as the sea became shallower and the mud-beds got awash one after the other, they would be torn about, re-sifted, and re-shaped by currents and by tides, and mixed with shore-sand ground out of shingle-beach, thus making confusion worse confounded. A few shells, of an Arctic or northern type, would be found in it here and there. Some would have lived near those later beaches, some in deeper water in the ancient ooze, wherever the ice- berg had left it in peace long enough for sea-animals to colonise and breed in it. But the general appear- ii.] THE PEBBLES IN THE STKEET. 57 ance of the dried sea-bottom would be a dreary and lifeless waste of sands, gravels, loose boulders, and boulder-bearing clays ; and wherever a boss of bare rock still stood up, it would be found ground down, and probably polished and scored by the ponderous icebergs which had lumbered over it in their passage out to sea. In a word, it would look exactly as vast tracts of the English, Scotch, and Irish lowlands must have looked before returning vegetation coated their dreary sands and clays with a layer of brown vegetable soil. Thus, and I believe thus only, can we explain the facts connected with these boulder pebbles. No agent known on earth can have stuck them in the clay, save ice, which is known to do so still elsewhere. No known agent can have scratched them as they are scratched, save ice, which is known to do so still elsewhere. No known agent — certainly not, in my opinion, the existing rivers — can have accumulated the vast beds of boulders which lie along the course of certain northern rivers ; notably along the Dee about Aboyne — save ice bearing them slowly down from the distant summits of the Grampians. No known agent, save ice, can have produced those rounded, and polished, and scored, and fluted rockers moutonnes — " sheep-backed rocks" — so common in the Lake district; so common, too, in Snowdon, especially between the two lakes of Llanberis; common in Kerry; to be seen anywhere, as far as I have ascertained, around the Scotch Highlands, where the turf is cleared away from an unweathered surface of the 58 TOWN GEOLOGY. [lu rock, in the direction in which a glacier would have pressed against it had one been there. Where these polishings and scorings are found in narrow glens, it is, no doubt, an open question whether some of them may not be the work of water. But nothing but the action of ice can have produced what I have seen in land-locked and quiet fiords in Kerry — ice-fluting sin polished rocks below high-water mark, so large that I could lie down in one of them. Nothing but the action of ice could produce what may be seen in any of our mountains — whole sheets of rock ground down into rounded flats, irrespective of the lie of the beds, not in valleys, but on the brows and summits of mountains, often ending abruptly at the edge of some sudden cliff, where the true work of water, in the shape of rain and frost, is actually destroying the previous work of ice, and fulfilling the rule laid down (I think by Professor Geikie in his delightful book on Scotch scenery as influenced by its geology), that ice planes down into flats, while water saws out into crags and gullies ; and that the rain and frost are even now restoring Scotch scenery to something of that rugged- ness and picturesqueiiess which it must have lost when it lay, like Greenland, under the indiscriminating grinding of a heavy sheet of ice. Lastly ; no known agent, save ice, will explain those perched boulders, composed of ancient hard rocks, which may be seen in so many parts of these islands and of the Continent. No water power could have lifted those stones, and tossed them up high and dry on mountain ridges and promontories, upon rocks of a totally different kind. Some of my readers surely recollect Wordsworth's noble lines about these ii.] THE PEBBLES' IN THE STREET. 59 mysterious wanderers, of winch lie had seen many a one about his native hills : As a huge stone is sometimes seen to lie Couched on the bald top of an eminence, Wonder to all who do the same espy By what means it could thither come, and whence ; So that it seems a thing endued with sense : Like a sea-beast crawled forth, that on a shelf Of rock or sand reposeth, there to sun itself. Yes ; but the next time you see such a stone, believe that the wonder has been solved, and found to be, like most wonders in Nature, more wonderful than we guessed it to be. It is not a sea-beast which has crawled forth, but an ice-beast which has been left behind ; lifted up thither by the ice, as surely as the famous Pierre-a-bot, forty feet in diameter, and hundreds of boulders more, almost as large as cottages, have been carried by ice from the distant Alps right across the lake of Neufchatel, and stranded on the slopes of the Jura, nine hundred feet above the lake.* Thus, I think, we have accounted for facts enough to make it probable that Britain was once covered partly by an ice-sheet, as Greenland is now, and partly, perhaps, by an icy sea. But, to make assurance more sure, let us look for new facts, and try whether our ice-dream will account for them also. Let us investigate our case as a good medical man does, by " verifying his first induction." He says : At the first glance, I can see symptoms a, ~b, c. It is therefore probable that my patient has got complaint A. But if he has he ought to have symptom d also. If I find that, my guess will be yet * See Lyell, "Antiquity of Man," p. 294 et seq. 60 TOWN GEOLOGY. [n. more probable. He ought also to have symptom e, and so forth; and as I find successively each of these symptoms which are proper to A, my first guess will become more and more probable, till it reaches practical certainty. Now let us do the same, and say — If this strange dream be true, and the lowlands of the North were once under an icy sea, ought we not to find sea-shells in their sands and clays ? Not abundantly, of course. We can understand that the sea-animals would be too rapidly covered up in mud, and too much disturbed by icebergs and boulders, to be very abundant. But still, some should surely be found here and there. Doubtless; and if my northern-town readers will search the boulder-clay pits near them, they will most probably find a few shells, if not in the clay itself, yet in sand-beds mixed with them, and probably underlying them. And this is a notable fact, that the more species of shells they find, the more they will find — if they work out their names from any good book of conchology — of a northern type ; of shells which notoriously, at this day, inhabit the colder seas. It is impossible for me here to enter at length on a subject on which a whole literature has been already written. Those who wish to study it may find all that they need know, and more, in Lyell;s " Student's Elements of Geology," and in chapter xii. of his " Antiquity of Man." They will find that if the evidence of scientific conchologists be worth anything, the period can be pointed out in the strata, though not of course in time, at which these seas began to grow colder, and southern and Mediterranean shells to dis- appear, their places being taken by shells of a temperate, ii.] THE PEBBLES IN THE STEEET. 61 and at last of an Arctic climate ; which last have since retreated either toward their native North, or into cold water at great depths. From Essex across to Wales, from Wales to the aestuary of the Clyde, this fact has been verified again and again. And in the search for these shells, a fresh fact, and a most startling one, was discovered. They are to be found not only in the clay of the lowlands, but at considerable heights up the hills,, showing that, at some time or other, these hills have been submerged beneath the sea. Let me give one example, which any tourist into Wales may see for himself. Moel Tryfaen is a mountain over Carnarvon. Now perched on the side of that mountain, fourteen hundred feet above the present sea-level, is an ancient sea-beach, five-and- thirty feet thick, lying on great ice-scratched boulders, which again lie on the mountain slates. It was dis- covered by the late Mr. Trimmer, now, alas ! lost to Geology. Out of that beach fifty-seven different species of shells have been taken ; eleven of them are now exclusively Arctic, and not found in our seas; four of them are still common to the Arctic seas and to our own ; and almost all the rest are northern' shells. Fourteen hundred feet above the present sea : and that, it must be understood, is not the greatest height at which such shells may be found hereafter. For, according to Professor Ramsay, drift of the same kind as that on Moel Tryfaen is found at a height of two thousand three hundred feet. Now I ask my readers to use their common sense over this astounding fact — which, after all, is only one among hundreds; to let (as Mr. Matthew Arnold 62 TOWN GEOLOGY. [n. would well say) their " tliouglit play freely " about it ; and consider for themselves what those shells must mean. I say not may, but must, unless we are to believe in a " Deus quidana deceptor," in a God who puts shells upon mountain- sides only to befool honest human beings, and gives men intellects which are worthless for even the simplest work. Those shells must mean that that mountain, and therefore the mountains round it, must have been once fourteen hundred feet at least lower than they are now. That the sea in which they were sunk was far colder than now. That icebergs brought and dropped boulders round their flanks. That upon those boulders a sea- beach formed, and that dead shells were beaten into it from a sea-bottom close by. That, and no less, Moel Tryfaen must mean. But it must mean, also, a length of time which has been well called "appalling." A length of time sufficient to let the mountain sink into the sea. Then length of time enough to enable those Arctic shells to crawl down from the northward, settle, and propagate themselves generation after generation ; then length of time enough to uplift their dead remains, and the beach, and the boulders, and all Snowdonia, fourteen hundred feet into the air. And if anyone should object that the last upheaval may have been effected, suddenly by a few tremendous earthquakes, we must answer — We have no proof of it. Earthquakes up- heave lands now only by slight and intermittent upward pulses; nay, some lands we know to rise without any earthquake pulses, but by simple, slow, upward swelling of a few feet in a century ; and we have no reason, and therefore no right, to suppose that ^i&£ ii.] THE PEBBLES IN! WE STREET. 7 \ i .63" ^ f i' ** V^ Snowdonia was upheaved by any meansAtyafc.any rate ' which we do not witness ikowf/atid therefore we} are bound to allow, not only that there wa*9 aC'lfag^ " age or ^' ice," but that that age was one of altogether enormous duration. But meanwhile some of you, I presume, will be ready to cry — Stop \ It may be our own weakness ; but you are really going on too fast and too far for our small imaginations. Have you not played with us, as well as argued with us, till you have inveigled us step by step into a conclusion which we cannot and will not believe ? That all this land should have been sunk beneath an icy sea ? That Britain should have been as Greenland is now ? We can't believe it, and we won't. If you say so, like stout common-sense Britons, who have a wholesome dread of being taken in with fine words and wild speculations, I assure you I shall not laugh at you even in private. On the contrary, I shall say — what I am sure every scientific man will say — So much the better. That is the sort of audience which we want, if we are teaching natural science. We do not want haste, enthusiasm, gobe-moucherie, as the French call it, which is agape to snap up any new and vast fancy, just because it is new and vast. We want our readers to be slow, suspicious, conserva- tive, ready to " gib," as we say of a horse, and refuse the collar up a steep place, saying — I must stop and think. I don't like the look of the path ahead of me. It seems an ugly place to get up. I don't know this road, and I shall not hurry over it. I must go back a few steps, and make sure. I must see whether it is the right road ; whether there are not other roads, a 64 TOWN GEOLOGY. [ir. dozen of them perhaps, which would do as well and better than this. This is the temper which finds out truth, slowly, but once and for all ; and I shall be glad, not sorry, to see it in my readers. And I am bound to say that it has been by that temper that this theory has been worked out, and the existence of this past age of ice, or glacial epoch, has been discovered, through many mistakes, many correc- tions, and many changes of opinion about details, for nearly forty years of hard work, by many men, in many lands. As a very humble student of this subject, I may say that I have been looking these facts in the face earnestly enough for more than twenty years, and that I am about as certain that they can only be explained by ice, as I am that my having got home by rail can only be explained by steam. But I think I know what startles you. It is the being asked to believe in such an enormous change in climate, and in the height of the land above the sea. Well — it is very astonishing, appalling — all but in- credible, if we had not the facts to prove it. But of the facts there can be no doubt. There can be no doubt that the climate of this northern hemisphere has changed enormously more than once. There can be no doubt that the distribution of land and water, the shape and size of its continents and seas, have changed again and again. There can be no doubt that, for instance, long before the age of ice, the whole North of Europe was much warmer than it is now. Take Greenland, for instance. Disco Island lies in Baffin's Bay, off the west coast of Greenland, in lati- ii.] THE PEBBLES IX THE 'STEEET. 65 tude 70°, far within the Arctic circle. Now there certain strata of rock, older than the ice, have not been destroyed by the grinding of the ice-cap ; and they are full of fossil plants. But of what kind of plants ? Of the same families as now grow in the warmer parts of the United States. Even a tulip -tree has been found among them. Now how is this to be explained ? Either we must say that the climate of Greenland was then so much warmer than now, that it had sum- mers probably as hot as those of New York ; or we must say that these leaves and stems were floated thither from the United States. But if we say the latter, we must allow a change in the shape of the land which is enormous. For nothing now can float northward from the United States into Baffin's Bay. The polar current sets out of Baffin's Bay southward, bringing icebergs down, not leaves up, through Davis's Straits. And in any case we must allow that the hills of Disco Island were then the bottom of a sea : or how would the leaves have been deposited in them at all? So much for the change of climate and land which can be proved to have gone on in Greenland. It has become colder. Why should it not some day become warmer again ? Now for England. It can be proved, as far as common sense can prove anything, that England was, before the age of ice, much warmer than it is now, and grew gradually cooler and cooler, just as, while the age of ice was dying out, it grew warmer again. Now what proof is there of that ? This. Underneath London — as, I dare say, many of you know — there lies four or five hundred feet of sc. F 66 TOWN GEOLOGY. [n. clay. But not ice-clay. Anything but that, as you will see. It belongs to a formation late (geologically speaking), but somewhat older than those Disco Island beds. And what sort of fossils do we find in it ? In the first place, the shells, which are abundant, are tropical — Nautili, Cones, and suchlike. And more, fruits and seeds are found in it, especially at the Isle of Sheppey. And what are they? Fruits of Nipa palms, a form only found now at river-mouths in Eastern India and the Indian islands ; Anona-seeds ; gourd-seeds ; Acacia fruits — all tropical again ; and Proteaceous plants too — of an Australian type. Surely your common sense would hint to you, that this London clay must be mud laid down off the mouth of a tropical river. But your common sense would be all but certain of that, when you found, as you would find, the teeth and bones of crocodiles and turtles, who come to land, remember, to lay their eggs ; the bones, too, of large mammals, allied to the tapir of India and South America, and the water-hog of the Cape. If all this does not mean that there was once a tropic climate and a tropic river running into some sea or other where London now stands, I must give up common sense and reason as deceitful and useless faculties ; and believe nothing, not even the evidence of my own senses. And now, have I, or have I not, fulfilled the promise which I made — rashly, I dare say some of you thought — in my first paper ? Have I, or have I not, made you prove to yourself, by your own common sense, that the lowlands of Britain were underneath the sea in the days in which these pebbles and boulders ii.] THE PEBBLES IN THE STREET. 67 were laid down over your plains ? Nay, have we not proved more ? Have we not found that that old sea was an icy sea ? Have we not wandered on, step by step, into a whole true fairyland of wonders ? to a time when all England, Scotland, and Ireland were as Greenland is now? when mud streams have rushed down from under glaciers on to a cold sea-bottom, when "ice, mast high, came floating by, as green as emerald ? " when Snowdon was sunk for at least fourteen hundred feet of its height ? when (as I could prove to you, had I time) the peaks of the highest Cumberland and Scotch mountains alone stood out, as islets in a frozen sea ? We want to get an answer to one strange question, and we have found a group of questions stranger still, and got them answered too. But so it is always in science. We know not what we shall discover. But this, at least, we know, that it will be far more won- derful than we had dreamed. The scientific explorer is always like Saul of old, who set out simply to find his father's asses, and found them — and a kingdom besides. I should have liked to have told you more about this bygone age of ice. I should have liked to say something to you on the curious question — which is still an open one — whether there were not two ages of ice ; whether the climate here did not, after perhaps thousands of years of Arctic cold, soften somewhat for a while — a few thousand years, perhaps — and then harden again into a second age of ice, somewhat less severe, probably, than the first. I should have liked to have hinted at the probable causes of this change — indeed, of the age of ice altogether — whether it was p 2 68 TOWN GEOLOGY. [n. caused by a change in the distribution of land and water, or by change in the height and size of these islands, which made them large enough, and high enough, to carry a sheet of eternal snow inland ; or whether, finally, the age of ice was caused by an actual change in the position of the whole planet with regard to its orbit round the sun — shifting at once the poles and the tropics ; a deep question that latter, on which astronomers, whose business it is, are still at work, and on which, ere young folk are old, they will have discovered, I expect, some startling facts. On that last question, I, being no astronomer, cannot speak. But I should have liked to have said somewhat on matters on which I have knowledge enough, at least, to teach you how much there is to be learnt. I should have liked to tell the student of sea-animals — how the ice- age helps to explain, and is again explained by, the remarkable discoveries which Dr. Carpenter and Mr. Wyville Thompson have just made, in the deep-sea dredgings in the North Atlantic. I should have liked to tell the botanist somewhat of the pre-glacial flora — the plants which lived here before the ice, and lasted, some of them at least, through all those ages of fearful cold, and linger still on the summits of Snowdon, and the highest peaks of Cumberland and Scotland. I should have liked to have told the lovers of zoology about the animals which lived before the ice — of the mammoth, or woolly elephant ; the woolly rhinoceros, the cave lion and bear, the reindeer, the musk oxen, the lemmings and the marmots which inhabited Britain till the ice drove them out southward, even into the South of France ; and how as the ice retreated, and the climate became tolerable once more, some of them ii.] THE PEBBLES IN THE STEEET. 69 — the mammoth and rhinoceros, the bison, the lion, and many another mighty beast reoccnpied our low- lands, at a time when the hippopotamus, at least in summer, ranged freely from Africa and Spain across what was then dry land between France and England, and fed by the side of animals which have long since retreated to Norway and to Canada. I should have liked to tell the archaeologist of the human beings — probably from their weapons and their habits — of the same race as the present Laplanders, who passed northward as the ice went back, following the wild reindeer herds from the South of France into our islands, which were no islands then, to be in their turn driven northward by stronger races from the east and south. But space presses, and I fear that I have written too much already. At least, I have turned over for you a few grand and strange pages in the book of nature, and taught you, I hope, a key by which to decipher their hiero- glyphics. At least, I have, I trust, taught you to look, as I do, with something of interest, even of awe, upon the pebbles in the street. III. THE STONES IN THE WALL. THIS is a large subject. For in the different towns of these islands, the walls are built of stones of almost every age, from the earliest to the latest ; and the town-geologist may find a quite different problem to solve in the nearest wall, on moving from one town to another twenty miles off. All I can do, therefore, is to take one set of towns, in the walls of which one sort of stones is commonly found, and talk of them ; taking care, of course, to choose a stone which is widely distributed. And such, I think, we can find in the so-called New Red sandstone, which, with its attendant marls, covers a vast tract — and that a rich and busy one — of England. From Hartlepool and the mouth of the Tees, down through Yorkshire and Nottinghamshire ; over the manufacturing districts of central England ; down the valley of the Severn ; past Bristol and the Somersetshire flats to Torquay in South Devon; up north-westward through Shrop- shire and Cheshire ; past Liverpool and northward through Lancashire ; reappearing again, north of the IIL] THE STONES IN THE WALL. 71 Lake mountains, about Carlisle and the Scotch side of the Solway Frith, stretches the New Red sandstone plain, from under which everywhere the coal-bearing rocks rise as from a sea. It contains, in many places, excellent quarries of building-stone ; the most famous of which, perhaps, are the well-known Runcorn quarries, near Liverpool, from which the old Romans brought the material for the walls and temples of ancient Chester, and from which the stone for the restoration of Chester Cathedral is being taken at this day. In some quarters, especially in the north-west of England, its soil is poor, because it is masked by that very boulder-clay of which I spoke in my last paper. But its rich red marls, wherever they come to the surface, are one of God's most precious gifts to this favoured land. On them, one finds oneself at once in a garden ; amid the noblest of timber, wheat, roots, grass which is green through the driest summers, and, in the western counties, cider-orchards laden with red and golden fruit. I know, throughout northern Europe, no such charming scenery, for quiet beauty and solid wealth, as that of the New Red marls ; and if I wished to show a foreigner what England was, I should take him along them, from Yorkshire to South Devon, and say — There. Is not that a country worth living for, — and worth dying for if need be ? Another reason which I have for dealing with the New Red sandstone is this — that (as I said just now) over great tracts of England, especially about the manufacturing districts, the town-geologist will find it covered immediately by the boulder clay. The townsman, finding this, would have a fair right to suppose that the clay was laid down immediately, or 72 TOWN GEOLOGY. [in. at least soon after, the sandstones or marls on which it lies ; that as soon as the one had settled at the bottom of some old sea, the other settled on the top of it, in the same sea. A fair and reasonable guess, which would in many cases, indeed in most, be quite true. But in this case it would be a mistake. The sandstone and marls are immensely older than the boulder-clay. They are, humanly speaking, some four or five worlds older. What do I mean ? This — that between the time when the one, and the time when the other, was made, the British Islands, and probably the whole continent of Europe, have changed four or five times ; in shape ; in height above the sea, or depth below it ; in climate ; in the kinds of plants and animals which have dwelt on them, or on their sea-bottoms. And surely it is not too strong a metaphor, to call such changes a change from an old world to a new one. Mind. I do not say that these changes were sudden or violent. It is far more probable that they are only part and parcel of that vast but slow change which is going on everywhere over our whole globe. I think that will appear probable in the course of this paper- But that these changes have taken place, is my main thesis. The fact I assert ; and I am bound to try and prove it. And in trying to do so, I shall no longer treat my readers, as I did in the first two papers, like children. I shall take for granted that they now understand something of the method by which geolo- gical problems are worked out ; and can trust it, and me ; and shall state boldly the conclusions of geolo- gists, only giving proof where proof is specially needed. Now you must understand that in England there in.] THE STONES IN THE WALL. 73 are two great divisions of these New Red sandstones, " Trias/' as geologists call them. An upper, called in Germany Keuper, which consists, atop, of the rich red marl, below them, of sandstones, and of those vast deposits of rock-salt, which have been long worked, and worked to such good purpose, that a vast subsi- dence of land has just taken place near Nantwich in Cheshire; and serious fears are entertained lest the town itself may subside, to fill up the caverns below, from whence the salt has been quarried. Underneath these beds again are those which carry the building- stone of Euncorn. Now these beds altogether, in Cheshire, at least, are about 3,400 feet thick; and were not laid down in a year, or in a century either. Below them lies a thousand feet of sandstones, known in Germany by the name of " Bunter," from its mottled and spotted appearance. What lies under them again, does not concern us just now. I said that the geologists called these beds the Trias ; that is, the triple group. But as yet we have heard of only two parts of it. Where is the third ? Not here, but in Germany. There, between the Keuper above and the Bunter below, lies a great series of limestone beds, which, from the abundance of fossils which they contain, go by the name of Muschelkalk. A long epoch must therefore have intervened between the laying down of the Bunter and of the Keuper- And we have a trace of that long epoch, even in England. The Keuper lies, certainly, immediately on the Bunter; but not always "conformably" on it. That is, the beds are not exactly parallel. The Banter had been slightly tilted, and slightly waterworn, before the Keuper was laid on it. 74 TOWN GEOLOGY. [m. It is reasonable, therefore, to suppose, that the Bunter in England was dry land, and therefore safe from fresh deposit, through ages during which it was deep enough beneath the sea in Germany, to have the Muschelkalk laid down on it. Here again, then, as everywhere, we have evidence of time — time, not only beyond all counting, but beyond all imagining. And now, perhaps, the reader will ask — If I am to believe that all new land is made out of old land, and that all rocks and soils are derived from the wear and tear of still older rocks, off what land came this enor- mous heap of sands more than 5,000 feet thick in places, stretching across England and into Germany ? It is difficult to answer. The shape and distribu- tion of land in those days were so different from what they are now, that the rocks which furnished a great deal of our sandstone may be now, for aught I know, a mile beneath the sea. But over the land which still stands out of the sea near us there has been wear and tear enough to account for any quantity of sand deposit. As a single instance — It is a provable and proven fact — as you may see from Mr. Earn say's survey of North Wales — that over a large tract to the south of Snowdon, between Port Madoc and Barmouth, there has been ground off and carried away a mass of solid rock 20,000 feet thick ; thick enough, in fact, if it were there still, to make a range of mountains as high as the Andes. It is a provable and proven fact that vast tracts of the centre of poor old Ireland were once covered with coal- measures, which have been scraped off in likewise, deprived of inestimable mineral wealth. The destruc- tion of rocks — " denudation " as it is called — in the IIL] THE STONES IN district round Malvern, is, I am mous. Indeed, it is so overall Wftles, and West and North Scotland. Sd Jfhere is enough of rubbish to be accounted for to make bur New Ke> IT.] THE COAL IX THE FIRE. < /> . 107 C/A> -«F north-western France, Belgium, Holland^ £pid Germaiiy / were then under the sea ; that Derjffaark were joined to Scotland by a continent, which ran across the centre of England^ Ireland, dividing the northern and southern cda/- < fields. But how far to the west and north did that old continent stretch ? Did it, as it almost certainly did long ages afterwards, join Greenland and North America with Scotland and Norway? Were the northern fields of Nova Scotia, which are of the same geological age as our own, and contain the same plants, laid down by rivers which ran off the same continent as ours ? Who can tell now ? That old land, and all record of it, save what these fragmentary coal-measures can give, are buried in the dark abyss of countless ages ; and we can only look back with awe, and comfort ourselves with the thought — Let Time be ever so vast, yet Time is not Eternity. One word more. If my readers have granted that all for which I have argued is probable, they will still have a right to ask for further proof. They will be justified in saying : " You say that coal is transformed vegetable matter ; but can you • show us how the transformation takes place ? Is it possible according to known natural laws ? " The chemist must answer that. And he tells us that wood can become lignite, or wood-coal, by parting with its oxygen, in the shape of carbonic acid gas, or choke-damp ; and then common or bituminous coal, by parting with its hydrogen, chiefly in the form of carburetted hydrogen — the gas with which we light our streets. That is about as much as the unscientific reader need know. But it is a fresh corroboration of 108 TOWN GEOLOGY. [iv. the theory that coal has been once vegetable fibre, for it shows how vegetable fibre can, by the laws of nature, become coal. And it certainly helps us to believe that a thing has been done, if we are shown that it can be' done. This fact explains, also, why in mines of wood- coal carbonic acid, i.e. choke-damp, alone is given off. For in the wood-coal a great deal of the hydrogen still remains. In mines of true coal, not only is choke- damp given off, but that more terrible pest of the miners, fire-damp, or explosive carburetted hydrogen and olefiant gases. Now the occurrence of that fire- damp in mines proves that changes are still going on in the coal : that it is getting rid of its hydrogen, and so progressing toward the state of anthracite or culm — stone-coal as it is sometimes called. In the Penn- sylvanian coal-fields some of the coal has actually done this, under the disturbing force of earthquakes; for the coal, which is bituminous, like our common coal, to the westward where the strata are horizontal, becomes gradually anthracite as it is tossed and torn by the earthquake faults of the Alleghany and Appalachian mountains. And is a further transformation possible ? Yes ; and more than one. If we conceive the anthracite cleared of all but its last atoms of oxygen, hydrogen, and nitrogen, till it has become all but pure carbon, it would become — as it has become in certain rocks of immense antiquity, graphite — what we miscall black- lead. And, after that, it might go through one transformation more, and that the most startling of all. It would need only perfect purification and crystal- lisation to become — a diamond; nothing less. We iv.] THE COAL IX THE FIRE. 109 may consider the coal upon the fire as the middle term of a series, of which the first is live wood, and the last diamond ; and indulge safely in the fancy that every diamond in the world has probably, at some remote epoch, formed part of a growing plant. A strange transformation; which will look to us more strange, more truly poetical, the more steadily we consider it. The coal on the fire ; the table at which I write — what are they made of ? Gas and sunbeams ; with a small percentage of ash, or earthy salts, which need hardly be taken into account. Gas and sunbeams. Strange, but true. The life of the growing plant — and what that life is who can tell ? — laid hold of the gases in the air and in the soil ; of the carbonic acid, the atmospheric air, the water — for that too is gas. It drank them in through its rootlets : it breathed them in through its leaf -pores, that it might distil them into sap, and bud, and leaf, and wood. But it has to take in another element, without which the distillation and the shaping could never have taken place. It had to drink in the sunbeams — that mysterious and complex force which is for ever pouring from the sun, and making itself partly palpable to our senses as heat and light. So the life of the plant seized the sunbeams, and absorbed them, buried them in itself — no longer as light and heat, but as invisible chemical force, locked up for ages in that woody fibre. So it is. Lord Lytton told us long ago, in a beautiful song, how The Wind and the Beam loved the Rose. 110 TOWN GEOLOGY. [iv. But Nature's poetry was more beautiful than man's. The wind and the beam loved the rose so well that they made the rose — or rather, the rose took the wind and the beam, and built up out of « them, by her own inner life, her exquisite texture, hue, and fragrance. What next ? The rose dies ; the timber tree dies ; decays down into vegetable fibre, is buried, and turned to coal: but the plant cannot altogether undo its own work. Even in death and decay it cannot set free the sunbeams imprisoned in its tissue. The sun-force must stay, shut up age after age, invisible, but strong ; working at its own prison-cells ; transmuting them, or making them capable of being transmuted by man, into the manifold products of coal — coke, petroleum, mineral pitch, gases, coal-tar, benzole, delicate aniline dyes, and what not, till its day of deliverance comes. Man digs it, throws it on the fire, a black, dead- seeming lump. A corner, an atom of it, warms till it reaches the igniting point ; the temperature at which it is able to combine with oxygen. And then, like a dormant live thing, awaking after ages to the sense of its own powers, its own needs? the whole lump is seized, atom after atom, with an in- fectious hunger for that oxygen which it lost centuries since in the bottom of the earth. It drinks the oxygen in at every pore ; and burns. And so the spell of ages is broken. The sun-force bursts its prison-cells, and blazes into the free atmos- phere, as light and heat once more ; returning in a moment into the same forms in which it entered the growing leaf a thousand centuries since. Strange it all is, yet true. But of nature, as of the heart of man, the old saying stands — that truth is stranger than fiction. V. THE LIME IN THE MORTAR. I SHALL presume in all my readers some slight knowledge about lime. I shall take for granted, for instance, that all are better informed than a certain party of Australian black fellows were a few years since. In prowling on the track of a party of English settlers, to see what they could pick up, they came — oh joy ! — on a sack of flour, dropped and left behind in the bush at a certain creek. The poor savages had not had such a prospect of a good meal for many a day. With endless jabbering and dancing, the whole tribe gathered round the precious flour-bag with all the pannikins, gourds, and other hollow articles it could muster, each of course with a due quantity of water from the creek therein, and the chief began dealing out the flour by handfuls, beginning of course with the boldest warriors. But, horror of horrors, each man's porridge swelled before his eyes, grew hot, smoked, boiled over. They turned and fled, . man, woman, and child, from before that supernatural 112 TOWN GEOLOGY. [v. prodigy ; and the settlers coming back to look for the dropped sack, saw a sight which told the whole tale. For the poor creatures, in their terror, had thrown away their pans and calabashes, each filled with that which it was likely to contain, seeing that the sack itself had contained, not flour, but quick-lime. In memory of which comi-tragedy, that creek is called to this day, " Flour-bag Creek.-" Now I take for granted that you are all more learned than these black fellows, and know quick-lime from flour. But still you are not bound to know what quick-lime is. Let me explain it to you. Lime, properly speaking, is a metal, which goes among chemists by the name of calcium. But it is formed, as you all know, in the earth, not as a metal, but as a stone, as chalk or limestone, which is a carbonate of lime ; that is, calcium combined with oxygen and carbonic-acid gases. In that state it will make, if it is crystalline and hard, excellent building stone. The finest white marble, like that of Carrara in Italy, of which the most delicate statues are carved, is carbonate of lime altered and hardened by volcanic heat. But to make mortar of it, it must be softened and then brought into a state in which it can be hardened again ; and ages since, some man or other, who deserves to rank as one of the great inventors, one of the great benefactors of his race, discovered the art of making lime soft and hard again ; in fact of making mortar. The discovery was probably very ancient ; and made, probably like most of the old discoveries, in the East, spreading Westward gradually. The earlier Greek buildings are Cyclopean, that is, of stone fitted together without mortar. The v,] THE LIME IN THE MORTAR. 113 earlier Egyptian buildings, though, the stones are ex- quisitely squared and polished, are put together like- wise without mortar. So, long ages after, were the earlier Roman buildings, and even some of the later. The famous aqueduct of the Pont du Gard, near Nismes, in the south of France, has, if I recollect right, no mortar whatever in it. The stones of its noble double tier of circular arches have been dropped into their places upon the wooden centres, and stand un- moved to this day, simply by the jamming of their own weight; a miracle of art. But the fact is puzzling; for these Romans were the best mortar makers of the world. We cannot, I believe, surpass them in the art even now ; and in some of their old castles, the mortar is actually to this day harder and tougher than the stones which it holds together. And they had plenty of lime at hand if they had chosen to make mortar. The Pont du Gard crosses a limestone ravine, and is itself built of limestone. But I presume the cunning Romans would not trust mortar made from that coarse Nummulite limestone, filled with gritty sand, and pre- ferred, with their usual carefulness, no mortar at all to bad. But I must return, and tell my readers, in a few words, the chemical history of mortar. If limestone be burnt, or rather roasted, in a kiln, the carbonic acid is given off — as you may discover by your own nose ; as many a poor tramp has discovered too late, when, on a cold winter night, he has lain down by the side of the burning kiln to keep himself warm, and woke in the other world, stifled to death by the poisonous fumes. The lime then gives off its carbonic acid, and also so. i 114 TOWN GEOLOGY. [v. its water of crystallisation, that is, water which it holds (as do many rocks) locked up in it unseen, and only to be discovered by chemical analysis. It is then anhydrous — that is, waterless — oxide of lime, what we call quick-lime; that which figured in the comi-tragedy of "Plour-bag Creek ; " and then, as you may find if you get it under your nails or into your eyes, will burn and blister like an acid. This has to be turned again into a hard and tough artificial limestone, in plain words, into mortar ; and the first step is to slack it — that is, to give it back the water which it has lost, and for which it is as it were thirsting. So it is slacked with water, which it drinks in, heating itself and the water till it steams and swells in bulk, because it takes the substance of the water into its own substance. Slacked lime, as we all know, is not visibly wetter than quick-lime ; it crumbles to a dry white powder in spite of all the water which it contains. Then it must be made to set, that is, to return to limestone, to carbonate of lime, by drinking in the carbonic acid from water and air, which some sorts of lime will do instantly, setting at once, and being therefore used as cements. But the lime usually employed must be mixed with more or less sand to make it set hard : a mysterious process, of which it will be enough to tell the reader that the sand and lime are said to unite gradually, not only mechanically, that is, by sticking together; but also in part chemi- cally— that is, by forming out of themselves a new substance, which is called silicate of lime. Be that as it may, the mortar paste has now to do two things ; first to dry, and next to take up carbonic v.] THE LIME IN THE MOBTAB. 115 acid from the air and water, enough to harden it again into limestone : and that it will take some time in doing. A thick wall, I am informed, requires several years before it is set throughout, and has acquired its full hardness, or rather toughness ; and good mortar, as is well known, will acquire extreme hardness with age, probably from the very same cause that it did when it was limestone in the earth. For, as a general rule, the more ancient the strata is in which the lime- stone is found, the harder the limestone is ; except in cases where volcanic action and earthquake pressure have hardened limestone in more recent strata, as in the case of the white marbles of Carrara in Italy, which are of the age of our Oolites, that is, of the freestone of Bath, etc., hardened by the heat of intruded volcanic rocks. But now: what is the limestone? and how did it get where it is — not into the mortar, I mean, but into the limestone quarry? Let me tell you, or rather, help you to tell yourselves, by leading you, as before, from the known to the unknown. Let me lead you to places unknown indeed to most; but there may be sailors or soldiers among my readers who know them far better than I do. Let me lead you, in fancy, to some island in the Tropic seas. After all, I am not leading you as far away as you fancy by several thousand miles, as you will see, I trust, ere I have done. Let me take you to some island : what shall it be like ? Shall it be a high island, with cliff piled on cliff, and peak on peak, all rich with mighty forests, like a furred mantle of green velvet, mounting up and up till it is lost among white clouds above ? Or shall it i 2 116 TOWN GEOLOGY. [v. be a mere low reef, which you do not see till you are close upon it ; on which nothing rises above the water, but here and there a knot of cocoa-nut palms or a block of stone, or a few bushes, swarming with innu- merable sea-fowl and their eggs ? Let it be which you will: both are strange enough; both beautiful; both will tell us a story. The ship will have to lie-to, and anchor if she can; it may be a mile, it may be only a few yards, from the land. For between it and the land will be a line of breakers, raging in before the warm trade- wind. And this, you will be told, marks the edge of the coral reef. You will have to go ashore in a boat, over a sea which looks unfathomable, and which may be a mile or more in depth, and search for an opening in the reef, through which the boat can pass without being knocked to pieces. You find one : and in a moment, what a change ! The deep has suddenly become shallow; the blue white, from the gleam of the white coral at the bottom. But the coral is not all white, only indeed a little of it ; for as you look down through the clear water, you find that the coral is starred with innumerable live flowers, blue, crimson, grey, every conceivable hue ; and that these are the coral polypes, each with its ring of arms thrust out of its cell, who are building up their common habitations of lime. If you want to understand, by a rough but correct description, what a coral polype is : all who have been to the sea-side know, or at least have heard of, sea-anemones. Now coral polypes are sea- anemones, which make each a shell of lime, growing with its growth. As for their shapes, the variety of them, the beauty of them, no tongue can describe v.] THE LIME IN THE MOKTAB. 117 them. If you want to see them, go to the Coral Rooms of the British or Liverpool Museums, and judge for yourselves. Only remember that you must re-clothe each of those exquisite forms with a coating of live jelly of some delicate hue, and put back into every one of the thousand cells its living flower ; and into the beds, or rather banks, of the salt-water flower garden, the gaudiest of shell-less sea-anemones, such as we have on our coasts, rooted in the cracks, and live shells and sea-slugs, as gaudy as they, crawling about, with fifty other forms of fantastic and exuberant life. You must not overlook, too, the fish, especially the parrot-fish, some of them of the gaudiest colours, who spend their lives in browsing on the live coral, with strong clipping and grinding teeth, just as a cow browses the grass, keeping the animal matter, and throwing away the lime in the form of an impalpable white mud, which fills up the interstices in the coral beds. The bottom, just outside the reef, is covered with that mud, mixed with more lime-mud, which the surge wears off the reef ; and if you have, as you should have, a dredge on board, and try a haul of that mud as you row home, you may find, but not always, animal forms rooted in it, which will delight the soul of a scientific man. One, I hope, would be some sort of Terebratula, or shell akin to it. You would probably think it a cockle : but you would be wrong. The animal which dwells in it has about the same relationship to a cockle as a dog has to a bird. It is a Brachiopod ; a family with which the ancient seas once swarmed, but which is rare now, all over the world, having been supplanted and driven out of the seas by newer and stronger forms of shelled animals. The nearest spot at which -you are 118 TOWK GEOLOGY. [y. likely to dredge a live Brachiopod will be in tlie deep water of Loch Fyne, in Argyleshire, where two species still linger, fastened, strangely enough, to the smooth pebbles of a submerged glacier, formed in the open air during the age of ice, but sunk now to a depth of eighty fathoms. The first time I saw those shells come up in the dredge out of the dark and motionless abyss, I could sympathise with the feelings of mingled delight and awe which, so my companion told me, the great Professor Owen had in the same spot first beheld the same lingering remnants of a primaeval world. The other might be (but I cannot promise you even a chance of dredging that, unless you were on2 the coast of Portugal, or the windward side of some of the West India Islands) a live Crinoid; an exquisite starfish, with long and branching arms, but rooted in the mud by a long stalk, and that stalk throwing out barren side branches ; the whole a living plant of stone. You may see in museums specimens of this family, now so rare, all but extinct. And yet fifty or a hundred different forms of the same type swarmed in the ancient seas : whole masses of limestone are made up of little else but the fragments of such animals. But we have not landed yet on the dry part of the reef. Let us make for it, taking care meanwhile that we do not get our feet cut by the coral, or stung as by nettles by the coral insects. We shall see that the dry land is made up entirely of coral, ground and broken by the waves, and hurled inland by the storm, some- times in huge boulders, mostly as fine mud ; and that, under the influence of the sun and of the rain, which filters through it, charged with lime from the rotting •v.] THE LIME IN THE MORTAR. 119 coral, the whole is setting, as cement sets, into rock. And what is this ? A long bank of stone standing up as a low cliff, ten or twelve feet above high-water mark. It is full of fragments of shell, of fragments of coral, of all sorts of animal remains ; and the lower part of it is quite hard rock. Moreover, it is bedded in regular layers, just such as you see in a quarry. But how did it get there ? It must have been formed at the sea-level, some of it, indeed, under the sea ; for here are great masses of madrepore and limestone corals imbedded just as they grew. What lifted it up ? Your companions, if you have any who know the island, have no difficulty in telling you. It was hove up, they say, in the earthquake in such and such a year; and they will tell you, perhaps, that if you will go on shore to the main island which rises inside the reef, you may see dead coral beds just like these lying on the old rocks, and sloping up along the flanks of the mountains to several hundred feet above the sea. I have seen such many a time. Thus you find the coral being converted gradually into a limestone rock, either fine and homogeneous, composed of coral grown into pulp, or filled with corals and shells, or with angular fragments of older coral rock. Did you never see that last ? No ? Yes, you have a hundred times. You have but to look at the marbles commonly used about these islands, with angular fragments imbedded in the mass, and here and there a shell, the whole cemented together by water holding in solution carbonate of lime, and there see -the very same phenomenon perpetuated to this day. Thus, I think, we have got first from the known to the unknown ; from a tropic coral island back here to ,120 TOWN GEOLOGY. [v. the limestone hills of Great Britain; and I did not speak at random when I said that I was not leading you away as far as you fancied by several thousand miles. Examine any average limestone quarry from Bristol to Berwick, and you will see there all that I have been describing ; that is, all of it which is not soft animal matter, certain to decay. You will see the lime-mud hardened into rock beds ; you will see the shells em- bedded in it; you will see the corals in every stage of destruction ; you will see whole layers made up of innumerable fragments of Crinoids — no wonder they are innumerable, for, it has been calculated, there are in a single animal of some of the species 140,000 joints — 140,000 bits of lime to fall apart when its soft parts decay. But is it not all there ? And why should it not have got there by the same process by which similar old coral beds get up the mountain sides in the West Indies and elsewhere; namely, by the upheaving force of earthquakes ? When you see similar effects, you have a right to presume similar causes. If you see a man fall off a house here, and break his neck ; and some years after, in London or New York, or anywhere else, find another man lying at the foot of another house, with his neck broken in the same way, is it not a very fair presumption that he has fallen off a house likewise ? You may be wrong. He may have come to his encl by a dozen other means : but you must have proof of that. You will have a full right, in science and in common sense, to say — That man fell off the house, till some one proves to you that he did not. In fact, there is nothing which you see in the lime- v.] THE LIME IN THE MOR [ME IN THE MOR^AJI; . 'ml /, f> ' } i — save andexcep^the difference in il — which vou would'Dot^ee in tnd ) " stones of these isles every shell and coral — which you would* not «$e coral-beds of the West Indies, if such earthquake^ -as that famous one at St. Thomas's, in 1866, became^ / common and periodic, upheaving the land (they needs upheave it a very little, only two hundred and fifty feet), till St. Thomas's, and all the Virgin Isles, and the mighty mountain of Porto Rico, which looms up dim and purple to the west, were all joined into dry land once more, and the lonely coral-shoal of Anegada were raised, as it would be raised then, into a limestone table-land, like that of Central Ireland, of Galway, or of County Clare. But you must clearly understand, that however much these coralline limestones have been upheaved since they were formed, yet the sea-bottom, while they were being formed, was sinking and not rising. This is a fact which was first pointed out by Mr. Darwin, from the observations which he made in the world- famous Voyage of the Beagle ; and the observations of subsequent great naturalists have all gone to corrobo- rate his theory. It was supposed at first, you must understand, that when a ^oral island rose steeply to the surface of the sea out of blue water, perhaps a thousand fathoms or more, that fact was plain proof that the little coral polypes had begun at the bottom of the sea, and, in the course of ages, built up the whole island an enormous depth. But it soon came out that that theory was not correct ; for the coral polypes cannot live and build save in shallow water — say in thirty to forty fathoms. Indeed, some of the strongest and largest species work 122 TOWN GEOLOGY. [v. best at tlie very surface, and in the cut of the fiercest surf. And so arose a puzzle as to how coral rock is often found of vast thickness, which Mr. Darwin ex- plained. His theory was, and there is no doubt now that it is correct, that in these cases the sea-bottom is sinking ; that as it sinks, carrying the coral beds down with it, the coral dies, and a fresh live crop of polypes builds on the top of the houses of their dead ancestors : so that, as the depression goes on, generation after generation builds upwards, the living on the dead, keeping the upper surface of the reef at the same level, while its base is sinking downward into the abyss. Applying this theory to the coral reef of the Pacific Ocean, the following interesting facts were made out: That where you find an Island rising out of deep water, with a ring of coral round it, a little way from the shore — or, as in Eastern Australia, a coast with a fringing reef (the Flinders reef of Australia is eleven thousand miles long) — that is a pretty sure sign that that shore, or mountain, is sinking slowly beneath the sea. That where you find, as you often do in the Pacific, a mere atoll, or circular reef of coral, with a shallow pond of smooth water in the centre, and deep sea round, that is a pretty sure sign that the mountain-top has sunk completely into the sea, and that the corals are going on building where its peak once was. And more. On working out the geography of the South Sea Islands by the light of this theory of Mr. Darwin's, the following extraordinary fact has been discovered : That over a great part of the Pacific Ocean sinking is going on, and has been going on for ages ; and that Y.] THE LIME IN THE MOETAE. 123 the greater number of the beautiful and precious South Sea Islands are only the remnants of a vast continent or archipelago, which once stretched for thousands of miles between Australia and South America. Now, applying the same theory to limestone beds, which are, as you know, only fossil coral reefs, we have a right to say, when we see in England, Scotland, Ireland, limestones several thousand feet thick, that while they were being laid down as coral reef, the sea- bottom, and probably the neighbouring land, must have been sinking to the amount of their thickness — to several thousand feet — before that later sinking which enabled several hundred feet of millstone grit to be laid down on the top of the limestone. This millstone grit is a new and a very remarkable element in our strange story. From Derby to North- umberland it forms vast and lofty moors, capping, as at Whernside and Penygent, the highest limestone hills with its hard, rough, barren, and unfossiliferous strata. Wherever it is found, it lies on the top of the " mountain," or carboniferous limestone. Almost everywhere, where coal is found in England, it lies on the millstone grit. I speak roughly, for fear of con- fusing my readers with details. The three deposits pass more or less, in many places, into each other : but always in the order of mountain limestone below, millstone grit on it, and coal on that again. Now what does its presence prove? What but this ? That after the great coral reefs which spread over Somersetshire and South Wales, around the pre- sent estuary of the Severn, — and those, once perhaps joined to them, which spread from Derby to Berwick, with a western branch through North-east Wales, — 124 TOWN GEOLOGY. [v. were laid down — after all this, I say, some change took place in the sea-bottom, and brought down on the reefs of coral sheets of sand, which killed the corals and buried them in grit. Does any reader wish for proof of this ? Let him examine the " cherty," or flinty, beds which so often appear where the bottom of the millstone grit is passing into the top of the mountain limestone — the beds, to give an instance, which are now quarried on the top of the Halkin Mountain in Flintshire, for chert, which is sent to Staffordshire to be ground down for the manufac- ture of china. He will find layers in those beds, of several feet in thickness, as hard as flint, but as porous as sponge. On examining their cavities he will find them to be simply hollow casts of in- numerable joints of Crinoids, so exquisitely preserved, even to their most delicate markings, that it is plain they were never washed about upon a beach, but have grown where, or nearly where, they lie. What then, has happened to them ? They have been killed by the sand. The soft parts of the animals have decayed, letting the 140,000 joints (more or less) belonging to each animal fall into a heap, and be imbedded in the growing sand-rock; and then, it may be long years after, water filtering through the porous sand has removed the lime of which the joints were made, and left their perfect casts behind. So much for the millstone grits. How long the deposition of sand went on, how long after it that second dep osition of sands took place, which goes by the name of the "gannister," or lower coal-measures, we cannot tell. But it is clear, at least, that parts of that ancient sea were filling up and becoming dry T.] THE LIME IN THE MOKTAE. 125 land. For coal, or fossilised vegetable matter, be- comes more and more common as we ascend in the series of beds ; till at last, in the upper coal-measures, the enormous wealth of vegetation which grew, much of it, where it is now found, prove the existence of some such sheets, of fertile and forest-clad lowland as I described in my last paper. Thousands of feet of rich coral reef; thousands of feet of barren sands ; then thousands of feet of rich alluvial forest — and all these sliding into each other, if not in one place, then in another, without violent break or change ; this is the story which the lime in the mortar and the coal on the fire, between the two, reveal. VI. THE SLATES ON THE KOOF. THE slates on tlie roof should be, when rightly under- stood, a pleasant subject for contemplation to the dweller in a town. I do not ask him to imitate the boy who, cliff-bred from his youth, used to spend stolen hours on the house-top, with his back against a chimney-stalk, transfiguring in his imagination the roof -slopes into mountain-sides, the slates into sheets of rock, the cats into lions, and the sparrows into eagles. I only wish that he should — at least after reading this paper — let the slates on the roof carry him back in fancy to the mountains whence they came ; perhaps to pleasant trips to the lakes and hills of Cumberland, Westmoreland, and North Wales ; and to recognise — as he will do if he have intellect as well as fancy — how beautiful and how curious an object is a common slate. Beautiful, not only for the compactness and deli- cacy of its texture, and for the regularity and smooth- ness of its surface, but still more for its colour. Whether merely warm grey, as when dry, or bright vi.] THE SLATES ON THE KOOF. 127 purple, as when wet, the colour of the English slate well justifies Mr. Kuskin's saying, that wherever there is a brick wall and a slate' roof there need be no want of rich colour in an English landscape. But most beautiful is the hue of slate, when, shining wet in the sunshine after a summer shower, its blue is brought out in rich contrast by golden spots of circular lichen, whose spores, I presume, have travelled with it off its native mountains. Then, indeed, it reminds the voyager of a sight which it almost rivals in brilliancy —of the sapphire of the deep ocean, brought out into blazing intensity by the contrast of the golden patches of floating gulf -weed beneath the tropic sun. Beautiful, I say, is the slate ; and curious likewise, nay, venerable ; a most ancient and elaborate work of God, which has lasted long enough, and endured enough likewise, to bring out in it whatsoever latent capabilities of strength and usefulness might lie hid in it ; which has literally been — as far as such words can apply to a thing inanimate — Heated hot with burning fears, And bathed in baths of hissing tears, And battered by the strokes of doom To shape and use. And yet it was at first naught but an ugly lump of soft and shapeless ooze. Therefore, the slates to me are as a parable, on which I will not enlarge, but will leave each reader to interpret it for himself. I shall confine myself now to proofs that slate is hardened mud, and to hints as to how it assumed its present form. That slate may have been once mud, is made 128 TOWN GEOLOGY. [vi. probable by tlie simple fact tliat it can be turned into mud again. If you grind up slate, and then analyse it, you will find its mineral constituents to be exactly those of a fine, rich, and tenacious clay. The slate districts (at least in Snowdon) carry such a rich clay on them, wherever it is not masked by the ruins of other rocks. At Ilfracombe, in North Devon, the passage from slate below to clay above, may be clearly seen. Wherever the top of the slate beds, and the soil upon it, is laid bare, the black layers of slate may be seen gradually melting — if I may use the word — under the influence of rain and frost, into a rich tenacious clay, which is now not black, like its parent slate, but red, from the oxidation of the iron which it contains. But, granting this, how did the first change take place ? It must be allowed, at starting, that time enough has elapsed, and events enough have happened, since our supposed mud began first to become slate, to allow of many and strange transformations. For these slates are found in the oldest beds of rocks, save one series, in the known world ; and it is notorious that the older and lower the beds in which the slates are found, the better, that is, the more perfectly elaborate, is the slate. The best slates of Snowdon — I must confine myself to the district which I know personally — are found in the so-called " Cambrian " beds. Below these beds but one series of beds is as yet known in the world, called the " Laurentian." They occur, to a thickness of some eighty thousand feet, in Labrador, Canada, and the Adirondack mountains of New York : but their representatives in Europe are, as far as is vi.] THE SLATES ON THE ROOF. 129 known, only to be found in the north-west highlands of Scotland, and in the island of Lewis, which consists entirely of them. And it is to be remembered, as a proof of their inconceivable antiquity, that they have been upheaved and shifted long before the Cambrian rocks were laid down " unconf ormably " on their worn and broken edges. Above the ft Cambrian " slates — whether the lower and older ones of Penrhyn and Llanberris, which are the same — one slate mountain being worked at both sides in two opposite valleys — or the upper and newer slates of Tremadoc, lie other and newer slate-bearing beds of inferior quality, and belonging to a yet newer world, the " Silurian. " To them belong the Llandeilo flags and slates of Wales, and the Skiddaw slates of Cumberland, amid beds abounding in extinct fossil forms. Fossil shells are found, it is true, in the upper Cambrian beds. In the lower they have all but dis- appeared. Whether their traces have been obliterated by heat and pressure, and chemical action, during long ages ; or whether, in these lower beds, we are actually reaching that " Primordial Zone " conceived of by M. Barrande, namely, rocks which existed before living things had begun to people this planet, is a question not yet answered. I believe the former theory to be the true one. That there was life, in the sea at least, even before the oldest Cambrian rocks were laid down, is proved by the discovery of the now famous fossil, the Eozoon, in the Laurentian limestones, which seems to have grown layer after layer, and to have formed reefs of limestone as do the living coral- building polypes. We know no more as yet. But all that we do know points downwards, downwards still, warning sc. K 130 TOWN GEOLOGY. [vi. us, that we must dig deeper than we have dug as yet, before we reach the graves of the first living things. Let this suffice at present for the Cambrian and Laurentian rocks. The Silurian rocks, lower and upper, which in these islands have their chief development in Wales, and which are nearly thirty-eight thousand feet thick ; and the Devonian or Old Red sandstone beds, which in the Fans of Brecon and Carmarthenshire attain a thickness of ten thousand feet, must be passed through in an upward direction before we reach the bottom of that Carboniferous Limestone of which I spoke in my last paper. We thus find on the Cambrian rocks forty-five thousand feet at least of newer rocks, in several cases lying unconformably 011 each other, showing thereby that the lower beds had been up- heaved, and their edges worn off on a sea-shore, ere the upper were laid down on them; and throughout this vast thickness of rocks, the remains of hundreds of forms of animals, corals, shells, fish, older forms dying out in the newer rocks, and new ones taking their places in a steady succession of ever-varying forms, till those in the upper beds have become unlike those in the lower, and all are from the beginning more or less unlike any existing now on earth. Whole families, indeed, disappear entirely,- like the Trilobites, which seem to have swarmed in the Silurian seas, holding the same place there as crabs • and shrimps do in our modern seas. They vanish after the period of the coal, and their place is taken by an allied family of Crustaceans, of which only one f ornr (as far as I am aware) lingers now on earth, namely, the " King Crab," or Limulus, of the Indian Seas, a .',-; \ vr.] THE SLATES ON THK 'EOo '- ' «' > ; 13I; well-known animal, of which specimkns^njaj] sometimes be seen alive in English aquaria. So perished in the lapse of those same ages, the armour-plated or " Ganoid " fish which Hugh Miller made so justly famous — and which made him so justly famous in return — appearing first in the upper Silurian beds, and abounding in vast variety of strange forms in the old Ked Sandstone, but gradually disappearing from the waters of the world, till their only representatives, as far as known, are the Lepidostei, or " Bony Pikes," of North America; the Polypteri of the Nile and Senegal; the Lepidosirens of the Africanc lakes and Western rivers; the Ceratodus or Barramundi of Queensland (the two latter of which approach Am- phibians), and one or two more fantastic forms, either rudimentary or degraded, which have lasted on here and there in isolated stations through long ages, comparatively unchanged while all the world is changed around them, and their own kindred, buried like the fossil Ceratodus of the Trias beneath thousands of feet, of ancient rock, among creatures the likes whereof are not to be found now on earth. And these are but two examples out of hundreds of the vast changes which have taken place in the animal life of the globe, between the laying down of the Cambrian slates and the present time. Surely — and it is to this conclusion I have been tending throughout a seemingly wandering paragraph — surely there has been time enough during all those ages for clay to change into slate. And how were, they changed ? I think I cannot teach my readers this more simply than by asking them first to buy Sheet No. LXXYIII. K 2 132 TOWN GEOLOGY. [vi. S.E. (Bangor) of the Siiowdon district of the Govern- ment Geological Survey, which may be ordered at any good stationer's, price 3s. ; and study it with me- He will see down the right-hand margin interpretations of the different colours which mark the different beds, beginning with the youngest (alluvium) atop, and going down through Carboniferous Limestone and Sandstone, Upper Silurian, Lower Silurian, Cambrian, and below them certain rocks marked of different shades of red, which signify rocks either altered by heat, or poured out of old volcanic vents. He will next see that the map is covered with a labyrinth of red patches and curved lines, signifying the outcrop or appearance at the surface of these volcanic beds. They lie at every conceivable slope ; and the hills and valleys have been scooped out by rain and ice into every conceivable slope likewise. Wherefore we see, here a broad patch of red, where the back of a sheet of Lava, Porphyry, Greenstone, or what not is exposed ; there a narrow line curving often with the curve of the hill- side, where only the edge of a similar sheet is exposed; and every possible variety of shape and attitude between these two. He will see also large spaces covered with little coloured dots, which signify (as he will find at the margin) beds of volcanic ash. If he look below the little coloured squares on the margin, he will see figures marking the strike, or direction of the inclination of the beds — inclined, vertical, hori- zontal, contorted; that the white lines in the map signify faults, i.e. shifts in the strata ; the gold lines, lodes of metal — the latter of which I should advise him strongly, in this district at least, not to meddle with: but to button up his pockets, and to put into vi.] THE SLATES ON THE EOOF. 133 the fire, in wholesome fear of his own weakness and ignorance, any puffs of mining companies which may be sent him — as one or two have probably been sent him already. Furnished with which keys to the map, let him begin to con it over, sure that there is if not an order, still a grand meaning in all its seeming confusion; and let him, if he be a courteous and grateful person, return due thanks to Professor Ramsay for having found it all out; not without wondering, as I have often wondered, how even Professor Kamsay 's acuteness and industry could find it all out. When my reader has studied awhile the confusion — for it is a true confusion — of the different beds, he will ask, or at least have a right to ask, what known process of nature can have produced it ? How have these various volcanic rocks, which he sees marked as Felspathic Traps, Quartz Porphyries, Greenstones, and so forth, got intermingled with beds which he is told to believe are volcanic ashes, and those again with fossil-bearing Silurian beds and Cambrian slates, which he is told to believe were deposited under water? And his puzzle will not be lessened when he is told that, in some cases, as in that of the summit of Snowdon, these very volcanic ashes contain fossil shells. The best answer I can give is. to ask him to use his imagination, or his common sense ; and to picture to himself what must go on in the case of a submarine eruption, such as broke out off the coast of Iceland in 1783 and 1830, off the Azores in 1811, and in our day in more than one spot in the Pacific Ocean. A main bore or vent — or more than one — opens 134 TOWN GEOLOGY. [vi.. itself between the bottom of the sea and the nether fires. From each rushes an enormous jet of high- pressure steam and other gases, which boils up through the sea, and forms a cloud above; that cloud descends again in heavy rain, and gives out often true lightning from its under side. But it does more. It acts as a true steam-gun, hurling into the air fragments of cold rock rasped off from the sides of the bore, and fragments also of melted lava, and clouds of dust, which fall again into the sea, and form there beds either of fine mud or of breccia — that is, fragments of stone embedded in paste. This, the reader will understand, is no fancy sketch, as far as I am concerned. I have steamed into craters sawn through by the sea, and showing sections of beds of ash dipping outwards and under the sea, and in them boulders and pebbles of every size, which had been hurled out of the crater ; and in them also veins of hardened lava, which had burrowed out through the soft ashes of the cone. Of those lava veins I will speak presently. What I want the reader to think of now is the immense quantity of ash which the steam-mitrailleuse hurls to so vast a height into the air, that it is often drifted many miles down to leeward. To give two instances : The jet of steam from Vesuvius, in the eruption of 1822, rose more than four miles into the air; the jet from the Souffriere of St. Vincent in the West Indies, in 1812, probably rose higher; certainly it met the N.E. trade-wind, for it poured down a layer of ashes, several inches thick, not only on St. Vincent itself, but on Barbadoes, eighty miles to windward, and therefore on all the sea between. Now let us consider what that represents — vi.] THE SLATES ON THE ROOF. 135 a layer of fine mud, laid down at the bottom of the ocean, several inches thick, eighty miles at least long, and twenty miles perhaps broad, by a single eruption. Suppose that hardened in long ages (as it would be under pressure) into a bed of fine grained Felstone, or volcanic ash; and we can understand how the ash- beds of Snowdonia — which may be traced some of them for many square miles — were laid down at the bottom of an ancient sea. But now about the lavas or true volcanic rocks, which are painted (as is usual in geological maps) red. Let us go .down to the bottom of the sea, and build up our volcano towards the surface. First, as I said, the subterranean steam would blast a bore. The dust and stones, rasped and blasted out of that hole would be spread about the sea- bottom as an ash-bed sloping away round the hole ; then the molten lava would rise in the bore, and flow out over the ashes and the sea-bottom — perhaps in one direction, perhaps all round. Then, usually, the volcano, having vented itself, would be quieter for a time, till the heat accumulated below, and more ash was blasted out, making a second ash- bed ; and then would follow a second lava flow. Thus are produced the alternate beds of lava and ash which are so common. Now suppose that at this point the volcano was exhausted, and lay quiet for a few hundred years, or more. If there was any land near, from which mud and sand were washed down, we might have layers on layers of sediment deposited, with live shells, etc., living in them, which would be converted into fossils when they died ; and so we should have f ossilif erous 136 TOWN GEOLOGY. . [vi. beds over the ashes and lavas. Indeed, shells might live and thrive in the ash-mud itself, when it cooled, and the sea grew quiet, as they have lived and thriven in Snowdonia. Now suppose that after these sedimentary beds are laid down by water, the volcano breaks out again — what would happen ? Many things : specially this, which has often happened already. The lava, kept down by the weight of these new- rocks, searches for the point of least resistance, and finds it in a more horizontal direction. It burrows out through the softer ash-beds, and between the sedimentary beds, spreading itself along horizontally. This process accounts for the very puzzling, though very common case in Snowdon and elsewhere, in which we find lavas interstratified with rocks which are plainly older than those lavas. Perhaps when that is done the volcano has got rid of all its lava, and is quiet. But if not, sooner or later, it bores up through the new sedimentary rocks, faulting them by earthquake shocks till it gets free vent, and begins its layers of alternate ash and lava once more. And consider this fact also : If near the first (as often happens) there is another volcano, the lava from one may run over the lava from the other, and we may have two lavas of different materials overlying each other, which have come from different directions. The ashes blown out of the two craters may mingle also, and so, in the course of ages, the result may be such a confusion of ashes, lavas, and sedimentary rocks as we find throughout most mountain ranges in Snowdon, in the Lake mountains, in the Auvergne in TI.] THE SLATES ON THE EOOF. 137 France, in Sicily round Etna, in Italy round Vesuvius, and in so many West Indian Islands ; the last confusion of which is very likely to be this : That when the volcano has succeeded — as it did in the case of Sabrina Island off the Azores in 1811, and as it did, perhaps often, in Snowdonia — in piling up an ash cone some hundred feet out of the sea; that — as has happened to Sabrina Island — the cone is sunk again by earthquakes, and gnawn down at the same time by the sea-waves, till nothing is left but a shoal under water. But where have all its vast heaps of ashes gone ? To be spread about over the bottom of the sea, to mingle with the mud already there, and so make beds of which, like many in Snowdon, we cannot say whether they are of volcanic or of marine origin, because they are of both. But what has all this to do with the slates ? I shall not be surprised if my readers ask that question two or three times during this paper. But they must be kind enough to let me tell my story my own way. The slates were not made in a day, and I fear they cannot be explained in an hour : unless we begin carefully at the beginning in order to end at the end. Let me first make my readers clearly understand that all our slate-bearing mountains, and most also of the non-slate-bearing ones likewise, are formed after the fashion which I have described, namely, beneath the sea. I do not say that there may not have been, again, and again, ash-cones rising above the surface of the waves. But if so, they were washed away, again and again, ages before the land assumed anything of its present shape ; ages before the beds were twisted and upheaved as they are now. 138 TOWN GEOLOGY. [vi. And therefore I beg my readers to put out of their minds once and for all the fancy that in any known part of these islands craters are to be still seen, such as exist in Etna, or Vesuvius, or other volcanoes now at work in the open air. It is necessary to insist on this, because many people hearing that certain mountains are volcanic, conclude — and very naturally and harmlessly — that the circular lakes about their tops are true craters. I have been told, for instance, that that wonderful little blue Glas Llyn, under the highest cliff of Snowdon, is the old crater of the mountain ; and I have heard people insist that a similar lake, of almost equal grandeur, in the south side of Cader Idris, is a crater likewise. But the fact is not so. Any one acquainted with recent craters would see at once that Glas Llyn is not an ancient one ; and I am not surprised to find the Government geologists declaring that the Llyn on Cader Idris is not one either. The fact is, that the crater, or rather the place where the crater has been, in ancient volcanoes of this kind, is probably now covered by one of the innumerable bosses of lava. For, as an eruption ceases, the melted lava cools in the vents, and hardens; usually into lava infinitely harder than the ash-cone round it ; and this, when the ash-cone is washed off, remains as the highest part of the hill, as in the Mont Dore and the Cantal in France, and in several extinct volcanoes in the Antilles. Of course the lava must have been poured out, and the ashes blown out from some vents or other, connected with the nether world of fire ; probably from many successive vents. For in volcanoes, when one vent is choked, another is wont VL] THE SLATES ON THE EOOF. 139 to open at some fresh, point of least resistance among the overlying rocks. But where are these vents? Buried deep under successive eruptions, shifted probably from their places by successive upheavings and dislocations ; and if we wanted to find them we should have to quarry the mountain range all over, a mile deep, before we hit upon here and there a tap-root of ancient lava, connecting the upper and the nether worlds. There are such tap-roots, probably, under each of our British mountain ranges. But Snowdon, certainly, does not owe its shape to the fact of one of these old fire vents being under it. It owes its shape simply to the accident of some of. the beds toward the summit being especially hard, and thus able to stand the wear and tear of sea-wave, ice, and rain. Its lakes have been formed quite regardless of the lie of the rocks, though not regardless of their relative hardness. But what forces scooped them out — whether they were originally holes left in the ground by earthquakes, and deepened since by rain and rivers, or whether they were scooped out by ice, or by any other means, is a question on which the best geologists are yet undecided — decided only on this — that craters they are not. As for the enormous changes which have taken place in the outline of the whole of the mountains, since first their strata were laid down at the bottom of the sea : I shall give facts enough, before this paper is done, to enable readers to judge of them for themselves. The reader will now ask, naturally enough, how such a heap of beds as I have described can take the shape of mountains like Snowdon. 140 TOWN GEOLOGY. [vr. Look at any sea cliff in which the strata are twisted and set on slope. There are hundreds of such in these isles. The beds must have been at one time straight and horizontal. But it is equally clear that they have been folded by being squeezed laterally. At least, that is the simplest explanation, as may be proved by experiment. Take a number of pieces of cloth, or any such stuff ; lay them on each other and then squeeze them together at each end. They will arrange them- selves in folds, just as the beds of the cliff have done. And if, instead of cloth, you take some more brittle matter, you will find that, as you squeeze on, these f old§ will tend to snap at the points of greatest tension or stretching, which will be of course at the anticlinal and synclinal lines — in plain English, the tops and bottoms of the folds. Thus cracks will be formed; and if the pressure goes on, the ends of the layers will shift against each other in the line of those cracks, forming faults like those so common in rocks. But again, suppose that instead of squeezing these broken and folded lines together any more, you took off the pressure right and left, and pressed them upwards from below, by a mimic earthquake. They would rise ; and as they rose leave open space between them. Now if you could contrive to squeeze into them from below a paste, which would harden in the cracks and between the layers, and so keep them permanently apart, you would make them into a fair likeness of an average mountain range — a mess — if I may make use of a plain old word — of rocks which have, by alternate contraction and expansion, helped in the latter case by the injection of molten lava, been thrust about as they are in most mountain ranges. Yi.] THE SLATES ON THE ROOF. That such a contraction and axpaflsic the crust of the earth is evident; for here are the palpable effects of it. And the simplest jgenpr^ e&ijLs"£ Y which I can give for it is this : That things expand as they are heated, and contract as they £,f e\cpofeft. OIi Now I am not learned enough — X/ v ON BIO-GEOLOGY. ON BIO-GEOLOGY. I AM not sure that the subject of my address is rightly chosen. I am not sure that I ought not to have post- poned a question of mere natural history, to speak to you as scientific men, on the questions of life and death, which have been forced upon us by the awful warning of an illustrious personage's illness ; of pre- ventible disease, its frightful prevalency; of the 200,000 persons who are said to have died of fever alone since the Prince Consort's death, ten years ago ; of the remedies ; of drainage ; of sewage disinfection and utilisation ; and of the assistance which you, as a body of scientific men, can give to any effort towards saving the lives and health of our fellow- citizens from those unseen poisons which lurk like wild beasts couched in the jungle, ready to spring at any moment on the unsuspecting, the innocent, the helpless. Of all this I longed to speak ; but I thought it best only to hint at it, and leave the question to your common sense and your humanitv ; taking for granted that your minds, like the minds of all right-minded English - * An Address given to the Scientific Society of Winchester, 1871. 156 ON BIO-GEOLOGY. [vn. men, have been of late painfully awakened to its importance. It seemed to me almost an impertinence to say more in a city of whose local circumstances I know little or nothing. As an old sanitary reformer, practical, as well as theoretical, I am but too well aware of the difficulties which beset any complete scheme of drainage, especially in an ancient city like this ; where -men are paying the penalty of their prede- cessors' ignorance ; and dwelling, whether they choose or not, over fifteen centuries of accumulated dirt. And, therefore, taking for granted that there is energy and intellect enough in Winchester to conquer these difficulties in due time, I go on to ask you to consider, for a time, a subject which is growing more and more important and interesting, a subject the study of which will do much towards raising the field naturalist from a mere collector of specimens — as he was twenty years ago — to a philosopher elucidating some of the grandest problems. I mean the infant science of Bio-geology — the science which treats of the distribution of plants and animals over the globe, and the cause of that distribution. I doubt not that there are many here who know far more about the subject than I; who are far better read than I am in the works of Forbes, Darwin, Wallace, Hooker, Moritz Wagner, and the other illustrious men who have written on it. But I may, perhaps, give a few hints which will be of use to the younger members of this Society, and will point out to them how to get a new relish for the pursuit of field science. Bio-geology, then, begins with asking every plant or animal you meet, large or small, not merely — What is your name ? That is the collector and classifier's VIL] WHERE PLANTS COME FROM? 157 duty ; and a most necessary duty it is, and one to be performed with the most conscientious patience and accuracy, so that a sound foundation may be built for future speculations. But young naturalists should act not merely as Nature's registrars and census-takers, but as her policemen and gamekeepers ; and ask every- thing they meet — How did you get there ? By what road did you come ? What was your last place of abode ? And now you are here, how do you get your living ? Are you and your children thriving, like decent people who can take care of themselves, or growing pauperised and degraded, and dying out ? Not that we have a fear of your becoming a dangerous class. Madame Nature allows no dangerous classes, in the modern sense. She has, doubtless for some wise reason, no mercy for the weak. She rewards each organism according to its works ; and if anything grows too weak or stupid to take care of itself, she gives it its due deserts by letting it die and disappear. So, you plant or you animal, are you among the strong, the successful, the multiplying, the colonising ? Or are you among the weak, the failing, the dwindling, the doomed ? These questions may seem somewhat rude : but you may comfort yourself by the thought that plants and animals, though they deserve all kindness, all admiration, deserve no courtesy — at least in this respect. For they are, one and all, wherever you find them, vagrants and landlopers, intruders and conquerors, who have got where they happen to be simply by the law of the strongest — generally not without a little robbery and murder. They have no right save that of possession ; the same by which the 158 ON BIO-GEOLOGY. [vu. puffin turns out the old rabbits, eats the young ones, and then lays her eggs in the rabbit-burrow — simply because she can. Now, you will see at once that such a course of questioning will call out a great many curious and interesting answers, if you can only get the things to tell you their story ; as you always may if you will cross-examine them long enough; and will lead you into many subjects beside mere botany or entomology. So various, indeed, are the subjects which you will thus start, that I can only hint at them now in the most cursory fashion. At the outset you will soon find yourself involved in chemical and meteorological questions ; as, for instance, when you ask — How is it that I find one flora on the sea-shore, another on the sandstone, another on the chalk, and another on the peat-making gravelly strata ? The usual answer would be, I presume — if we could work it out by twenty years' experiment, such as Mr. Lawes, of Rothampsted, has been making on the growth of grasses and leguminous plants in different soils and under different manures — the usual answer, I say, would be — Because we plants want such and such mineral constituents in our woody fibre ; again, because we want a certain amount of moisture at a certain period of the year : or, perhaps, simply because the mechanical 'arrangement of the particles of a certain soil happens to suit the shape of our roots and of their stomata. Sometimes you will get an answer quickly enough; sometimes not. If you ask, for instance, Asplenium viride how it contrives to grow plentifully in the Craven of Yorkshire down to 600 or 800 feet above the sea, while in Snowdon it dislikes growing vii.] HOW DID THEY GET THEEE ? 159" lower than 2000 feet, and is not plentiful even there? — it will reply — Because in the Craven I can get as much carbonic acid as I want from the decomposing lime- stone ; while on the Snowdon Silurian I get very little ; and I have to make it up by clinging to the mountain tops, for the sake of the greater rainfall. But if you ask Polypodium calcareum — How is it you choose only to grow on limestone, while Polypodium Dryopteris, of which, I suspect, you are only a variety, is ready to grow anywhere ? — Polypodium calcareum will refuse, as yet, to answer a word. Again — I can only give you the merest string of hints — you will find in your questionings that many plants and animals have no reason at all to show why they should be in one place and not in another, save the very sound reason for the latter which was suggested to me once by a great naturalist. I was asking — Why don't I find such and such a species in my parish, while it is plentiful a few miles off in exactly the same soil ? — and he answered — For the same reason that you are not in America. Because you have not got there. Which answer threw to me a flood of light on this whole science. Things are often where they are, simply because they happen to have got there, and not elsewhere. But they must have got there by some means, and those means I want young naturalists to discover \ at least, to guess at. A species, for instance — and I suspect it is a common case with insects — may abound in a single spot, simply because, long years ago, a single brood of eggs happened to hatch at a time when eggs of other species, who would have competed against them for food, did not hatch ; and they may remain confined to that 'spot, 160 ON BIO-GEOLOGY. [vn. though there is plenty of food for them outside it, simply because they do not increase fast enough to require to spread out in search of more food. Thus I should explain a case which I heard of lately of Antho- cera trifolii, abundant for years in one corner of a certain field, and only there ; while there was just as much trefoil all round for its larvaB as there was in the selected spot. I can, I say, only give hints : but they will suffice, I hope, to show the path of thought into which I want young naturalists to turn their minds. Or, again, you will have to inquire whether the species has not been prevented from spreading by some natural barrier. Mr. Wallace, whom you all of course know, has shown in his " Malay Archipelago " that a strait of deep-sea can act as such a barrier between species. Moritz Wagner has shown that, in the case of insects, a moderately-broad river may divide two closely-allied species of beetles, or a very narrow snow-range, two closely-allied species of moths. Again, another cause, and a most common one, is : that the plants cannot spread because they find the ground beyond them already occupied by other plants, who will not tolerate a fresh mouth, having only just enough to feed themselves. Take the case of Saxifraga hypnoides and 8. umbrosa, " London pride/' They are two especially strong species. They show that, 8. hypnoides especially, by their power of sporting, of diverging into varieties ; they show it equally by their power of thriving anywhere, if they can only get there. They will grow both in my sandy garden, under a rainfall of only 23 inches, more luxuriantly than in their native mountains under a rainfall of 50 or 60 inches. Then how is it that 8. hypnoides cannot get •VIL] TKAVELS OF FEATHERED SEEDS. 161 down off the mountains ; and that S. umbrosa, though in Kerry it has got off the mountains and down to the sea-level, exterminating, I suspect, many species in its progress, yet cannot get across County Cork ? The only answer is, I believe, that both species are con- tinually trying to go ahead ; but that the other plants already in front of them are too strong for them, and massacre their infants as soon as born. And this brings us to another curious question : the sudden and abundant appearance of plants, like the foxglove and Epilobium angustifolium, in spots where they have never been seen before. Are there seeds, as some think, dormant in the ground; or are the seeds which have germinated, fresh ones wafted thither by wind or otherwise, and only able to germi- nate in that one spot because there -the soil is clear ? General Monro, now famous for his unequalled memoir on the bamboos, holds to the latter theory. He pointed out to me that the Epilobium seeds, being feathered, could travel with the wind; that the plant always made its appearance first on new banks, landslips, clearings, where it had nothing to compete against; and that the foxglove did the same. True, and most painfully true, in the case of thistles and groundsels : but foxglove seeds, though minute, would hardly be carried by the wind any more than those of the white clover, which comes up so abundantly in drained fens. Adhuc sub judice lis est, and I wish some young naturalists would work carefully at the solution ; by experiment, which is the most sure way to find out anything. But in researches in this direction they will find puzzles enough. I will give them one which I shall so. M 162 ON BIO-GEOLOGY. [vn. be most thankful to hear they have solved within the next seven years — How is ' it that we find certain plants, namely, the thrift and the scurvy grass, abun- dant on the sea-shore and common on certain mountain- tops, but nowhere between the two ? Answer me that. For I have looked at the fact for years — before, behind, sideways, upside down, and inside out — and I cannot understand it. But all these questions, and especially, I suspect, that last one, ought to lead the young student up to the great and complex question — How were these islands re-peopled with plants and animals, after the long and wholesale catastrophe of the glacial epoch ? I presume you all know, and will agree, that the whole of these islands, north of the Thames, save certain ice-clad mountain-tops, were buried for long ages under an icy sea. From whence did vegetable and animal life crawl back to the land, as it rose again ; and cover its mantle of glacial drift with fresh life and verdure ? Now let me give you a few prolegomena on this matter. You must study the plants of course, species by species. Take Watson's " Cybele Britannica " and Moore's " Cybele Hibernica ;" and let — as Mr. Matthew Arnold would say — {f your thought play freely about them." Look carefully, too, in the case of each species, at the note on its distribution, which you will find appended in Bentham's " Handbook/' and in Hooker's " Student's Flora." Get all the help you can, if you wish to work the subject out, from foreign botanists, both European and American; and I think that, on the whole, you will come to some such theory as this for a general starting platform. We do not owe our vii.] CONQUEBING EACES AND NEW PLANTS. 163 flora — I must keep to the flora just now — to so many different regions,, or types, as Mr. Watson conceives, but to three, namely, an European or Germanic flora, from the south-east ; an Atlantic flora, from the south- east ; a Northern flora, from the north. These three invaded us after the glacial epoch ; and our general flora is their result. But this will cause you much trouble. Before you go a step farther you will have to eliminate from all your calculations most of the plants which Watson calls glareal, i.e. found in cultivated ground about habita- tions. And what their limit may be I think we never shall know. But of this we may be sure; that just as invading armies always bring with them, in forage or otherwise, some plants from their own country — just as the Cossacks, in 1815, brought more than one Russian plant through Germany into France — just as you have already a crop of North German plants upon the battle- fields of France — thus do conquering races bring new plants. The Romans, during their 300 or 400 years of occupation and civilisation, must have brought more species, I believe, than I dare mention. I suspect them of having brought, not merely the common hedge elm of the south, not merely the three species of nettle, but all our red poppies, and a great number of the weeds which are common in our cornfields ; and when we add to them the plants which may have been brought by returning crusaders and pilgrims ; by monks from every part of Europe, by Flemings or other dealers in foreign wool — we have to cut a huge can tie out of our indigenous flora : only, having no records, we hardly know where and what to cut out ; and can only, we elder ones, recommend the subject to the notice of the M 2 164 ON BIO-GEOLOGY. [vn. younger botanists, that they may work it out after our work is done. Of course these plants introduced by man, if they are cut out, must be cut out of only one of the floras, namely, the European ; for they, probably, came from the south-east, by whatever means they came. That European flora invaded us, I presume, imme- diately after the glacial epoch, at a time when France and England were united, and the German Ocean a mere network of rivers, which emptied into the deep sea between Scotland and Scandinavia. And here I must add, that endless questions of interest will arise to those who will study, not merely the invasion of that truly European flora, but the invasion of reptiles, insects, and birds, especially birds of passage, which must have followed it as soon as the land was sufficiently covered with vegetation to support life. Whole volumes remain to be written on this subject. I trust that some of your younger members may live to write one of them. The way to begin will be : to compare the flora and fauna of this part of England very carefully with that of the southern and eastern counties ; and then to compare them again with the fauna and flora of France, Belgium, and Holland. As for the Atlantic flora, you will have to decide for yourselves whether you accept or not the theory of a sunken Atlantic continent. I confess that all objections to that theory, however astounding it may seem, are outweighed in my mind by a host of facts which I can explain by no other theory. But you must judge for yourselves ; and to do so you must study carefully the distribution of heaths both in Europe and at the Cape, and their non-appearance vii.] THE PEE-GLACIAL FLORA. 165 beyond the Ural Mountains, and in America, save in Labrador, where the common ling, an older and less specialised form, exists. You must consider, too, the plants common to the Azores, Portugal, the West of England, Ireland, and the "Western Hebrides. In so doing young naturalists will at least find proofs of a change in the distribution of land and water, which will utterly astound them when they face it for the first time. As for the Northern flora, the question whence it came is puzzling enough. It seems difficult to conceive how any plants could have survived when Scotland was an archipelago in the same ice-covered condition as Greenland is now ; and we have no proof that there existed after the glacial epoch any northern continent from which the plants and animals could have come back to us. The species of plants and animals common to Britain, Scandinavia, and North America, must have spread in pre- glacial times when a continent joining them did exist. But some light has been thrown on this question by an article, as charming as it is able, on "The Physics of the Arctic Ice/' by Dr. Brown of Campster. You will find it in the " Quarterly Journal of the Geo- logical Society" for February, 1870. He shows there that even in Greenland peaks and crags are left free enough from ice to support a vegetation of between three hundred or four hundred species of flowering plants ; and, therefore, he well says, we must be careful to avoid concluding that the plant and animal life on the dreary shores or mountain-tops of the old glacial Scotland was poor. The same would hold good of our mountains ; and, if so, we may look with respect, even 166 ON BIO-GEOLOGY. [vii, awe, on the Alpine plants of Wales, Scotland, and the Lake mountains, as organisms, stunted it may be, and even degraded by their long battle with the elements,, but venerable from their age, historic from their en- durance. Relics of an older temperate world, they have lived through thousands of centuries of frost and fog, to sun themselves in a temperate climate once more. I can never pick one of them without a tinge of shame; and to exterminate one of them is to destroy, for the mere pleasure of collecting, the last of a family which God has taken the trouble to preserve for thousands of centuries. I trust that these hints — for I can call them nothing more — will at least awaken any young naturalist who has hitherto only collected natural objects, to study the really important and interesting question — How did these things get here ? Now hence arise questions which may puzzle the mind of a Hampshire naturalist. You have in this neighbourhood, as you well know, two, or rather three, soils, each carrying its peculiar vegetation. First, you have the clay lying on the chalk, and carrying vast woodlands, seemingly primeval. Next, you have the chalk, with its peculiar, delicate, and often fragrant crop of lime-loving plants ; and next, you have the poor sands and clays of the New Forest basin, satu- rated with iron, and therefore carrying a moorland or peat-loving vegetation, in many respects quite different from the others. And this moorland soil, and this vegetation, with a few singular exceptions, repeats itself, as I daresay you know, in the north of the county, in the Bagshot basin, as it is called — the moors of Aldershot, Hartford Bridge, and Windsor Forest. vii.] THE MOST ANCIENT FORMS. 167 Now what a variety of interesting questions are opened up by these simple facts. How did these three floras get each to its present place ? Where did each come from ? How did it get past or through the other, till each set of plants, after long internecine compe- tition, settled itself down in the sheet of land most congenial to it ? And when did each come hither ? Which is the oldest ? Will any one tell me whether the healthy floras of the moors, or the thy my flora of the chalk downs, were the earlier inhabitants of these isles? To these questions I cannot get any answer; and they cannot be answered without, first — a very careful study of the range of each species of plant on the continent of Europe ; and next, without careful study of those stupendous changes in the shape of this island which have taken place at a very late geological epoch. The composition of the flora of our moorlands is as yet to me an utter puzzle. We have Lycopodiums — three species — enormously ancient forms which have survived the age of ice : but did they crawl downward hither from the northern mountains or upward hither from the Pyrenees ? We have the beautiful bog asphodel again — an enormously ancient form ; for it is, strange to say, common to North America and to Northern Europe, but does not enter Asia — almost an unique instance. It must, surely, have come from the north ; and points — as do many species of plants and animals — to the time when North Europe and North America were joined. We have, sparingly, in North Hampshire, though, strangely, not on the Bagshot moors, the Com- mon or Northern Butterwort (Pinguicula vulgaris)-, and also, in the south, the New Forest part of the county, the delicate little Pinguicula lusitariica, the 168 ON BIO-GEOLOGY. [vn. only species now found in Devon and Cornwall, marking the New Forest as the extreme eastern limit of the Atlantic flora. We have again the heaths, which, as I have just said, are found neither in America nor in Asia, and must, I believe, have come from some south-western land long since submerged beneath the sea. But more, we have in the New Forest two plants which are members of the South Europe, or properly, the Atlantic flora; which must have come from the south and south-east ; and which are found in no other spots in these islands. I mean the lovely Gladiolus, which grows abundantly under the ferns near Lyndhurst, certainly wild, but it does not approach England elsewhere nearer than the Loire and the Khine ; and next, that delicate orchid, the Spiranthes cestivalis, which is known only in a bog near Lyndhurst and in the Channel Islands, while on the Continent it extends from Southern Europe all through France. Now, what do these two plants mark ? They give us a point in botany, though not in time, to de- termine when the south of England was parted from the opposite shores of France; and whenever that was, it was just after the Gladiolus and Spiranthes got hither. Two little colonies of these lovely flowers arrived just before their retreat was cut off. They found the country already occupied with other plants ; and, not being reinforced by fresh colonists from the south, have not been able to spread farther north than Lyndhurst. Thus, in the New Forest, and, I may say in the Bagshot moors, you find plants which you do not expect, and do not find plants which you do expect; and you are, or ought to be, puzzled, and I hope also interested, and stirred up to find out more. ^x #V M /i vii.] BEFOEE THE STRAITS OF DOVER./ /• 169 s\ ( />: t< I spoke just now of the time when Sjigland w£s/ . joined to France, as bearing on Hampshire bolfanj. It ^ * bears no less on Hampshire zoology. In insects/ for , , instance, the presence of the purple emperor and the f \ white admiral in our Hampshire woods, as well as the abundance of the great stag-beetle, point to a time when the two countries were joined, at least as far west as Hampshire ; while the absence of these insects farther to the westward shows that the countries, if ever joined, were already parted; and that those insects have not yet had time to spread westward. The presence of these two butterflies, and partly of the stag-beetle, along the south-east coast of England as far as the primeval forests of South Lincolnshire, points, as do a hundred other facts, to a time when the Straits of Dover either did not exist, or were the bed of a river running from the west ; and when, as I told you just now, all the rivers which now run into the German Ocean, from the Humber on the west to the Elbe on the east, discharged themselves into the sea between Scotland and Norway, after wandering through a vast lowland, covered with countless herds of mammoth, rhinoceros, gigantic ox, and other mammals now extinct ; while the birds, as far as we know, the insects, the fresh-water fish, and even, as my friend Mr. Brady has proved, the Entomostraca of the rivers, were the same in what is now Holland as in what is now our Eastern counties. I could dwell long on this matter. I could talk long about how certain species of Lepidoptera — moths and butterflies — like Papilio Machaon and P. Podalirius, swarm through France, reach up to the British Channel, and have not crossed it, with the exception of one colony 170 ON BIO-GEOLOGY. [vn. of MacJiaon in the Cambridgeshire fens. I could talk long about a similar phenomenon in the case of our migratory and singing birds ; how many exquisite species — notably those two glorious songsters, the Orphean Warbler and Hippolais, which delight our ears everywhere on the other side of the Channel — follow our nightingales, blackcaps, and warblers northward every spring almost to the Straits of Dover, but dare not cross, simply because they have been, as it were, created since the gulf was opened, and have never learnt from their parents how to fly over it. In the case of fishes, again, I might say much on the curious fact that the Cyprinidae, or white fish — carp, etc. — and their natural enemy, the pike, are indigenous, I believe, only to the rivers, English or continental, on the eastern side of the Straits of Dover; while the rivers on the western side were originally tenanted, like our Hampshire streams, as now, almost entirely by trout, their only Cyprinoid being the minnow — if it, too, be not an interloper; and I might ask you to consider the bearing of this curious fact on the former junction of England and France. But I have only time to point out to you a few curious facts with regard to reptiles, which should be specially interesting to a Hampshire bio-geologist. You know, of course, that in Ireland there are no reptiles, save the little common lizard, Lacerta agilis, and a few frogs on the mountain-tops — how they got there I cannot conceive. And you will, of course, guess, and rightly, that the reason of the absence of reptiles is : that Ireland was parted off from England vii.] LIZARDS AND NATTERJACKS. 171 before the creatures, which certainly spread from southern and warmer climates, had time to get there. You know, of course, that we have a few reptiles in England. But you may not be aware that, as soon as you cross the Channel, you find many more species of reptiles than here, as well as those which you find here. The magnificent green lizard which rattles about like a rabbit in a French forest, is never found here ; simply because it had not worked north- ward till after the Channel was formed. But there are three reptiles peculiar to this part of England which should .be most interesting to a Hampshire zoologist. The one is the sand lizard (L. stirpium), found on Bourne-heath, and, I suspect, in the South Hampshire moors likewise — a North European and French species. Another, the Goronella Icevis, a harm- less French and Austrian snake, which has been found about me, in North Hants and South Berks, now about fifteen or twenty times. I have had three specimens from my own parish. I believe it not to be uncommon ; and most probably to be found, by those who will look, both in the New Forest and Woolmer. The third is the Natterjack, or running toad (Bufo Eiibeta), a most beautifully-spotted animal, with a yellow stripe down his back, which is common with us at Eversley, and common also in many moorlands of Hants and Surrey; and, according to Fleming, on heaths near London, and as far north-east as Lincolnshire ; in which case it will belong to the Germanic fauna. Now, here again we have cases of animals which have just been able to get hither before the severance of England and France - and which, not being reinforced from the rear, have been forced to stop, in small and probably decreasing 172 ON BIO-GEOLOGY. [vn. colonies, on the spots nearest the coast which were fit for them. I trust that I have not kept you too long over these details. What I wish to impress upon you is that Hampshire is a country specially fitted for the study of important bio-geological questions. To work them out, you must trace the geology of Hampshire, and indeed, of East Dorset. You must try to form a conception of how the land was shaped in miocene times, before that tremendous upheaval which reared the chalk cliffs at Freshwater upright, lifting the tertiary beds upon their northern slopes. You must ask — Was there not land to the south of the Isle of Wight in those ages, and for ages after ; and what was its extent and shape ? You must ask — When was the gap between the Isle of Wight and the Isle of Pur- beck sawn through, leaving the Needles as remnants on one side, and Old Harry on the opposite ? And was it sawn asunder merely by the age-long gnawing of the waves ? You must ask — Where did the great river which ran from the west, where Poole Harbour is now, and probably through what is now the Solent, depositing brackish water-beds right and left — where, I say, did it run into the sea ? Where the Straits of Dover are now ? Or, if not there, where ? What, too, is become of the land to the Westward, composed of ancient metamorphic rocks, out of which it ran, and deposited on what are now the Haggerstone Moors of Poole, vast beds of grit ? What was the climate on its banks when it washed down the delicate leaves of broad- leaved trees, akin to our modern English ones, which are found in the fine mud-sand strata of Bournemouth ? When, finally, did it dwindle down to the brook which vii.] WISDOM BEFORE HAPPINESS. 173 now runs through Wareham town ? Was its bed, sea or dry land, or under an ice sheet, during the long ages of the glacial epoch ? And if you say — Who is sufficient for these things ? — Who can answer these questions ? I answer — Who but you, or your pupils after you, if you will but try ? And if any shall reply — And what use if I do try ? What use, if I do try? What use if I succeed in answering every question which you have propounded to-night ? Shall I be the happier for it ? ShaU I be the wiser ? My friends, whether you will be the happier for it, or for any knowledge of physical science, or for any other knowledge whatsoever, I cannot tell : that lies in the decision of a Higher Power than I ; and, indeed, to speak honestly, I do not think that bio-geology or any other branch of physical science is likely, at first at least, to make you happy. Neither is the study of your fellow-men. Neither is religion itself. We were not sent into the world to be happy, but to be right ; at least, poor creatures that we are, as right as we can be ; and we must be content with being right, and not happy. For I fear, or rather I hope, that most of us are not capable of carrying out Talleyrand's recipe for perfect happiness on earth — namely, a hard heart and a good digestion. Therefore, as our hearts are, happily, not always hard, and our digestions, unhappily, not always good, we will be content to be made wise by physical science, even though we be not made happy. And we shall be made truly wise if we be made con- tent ; content, too, not only with what we can under- stand, but, content with what we do not understand — the habit of mind which theologians call — and rightly 174 ON BIO-GEOLOGY. [vn. — faith in God ; the true and solid faith, which comes often out of sadness, and out of doubt, such as bio-geology may well stir in us at first sight. For our first feeling will be — I know mine was when I began to look into these matters — one somewhat of dread and of horror. Here were all these creatures, animal and vegetable, competing against each other. And their competition was so earnest and complete, that it did not mean — as it does among honest shopkeepers in a civilised country — I will make a little more money than you; but — I will crush you, enslave you, exterminate you, eat you up. "Woe to the weak/' seems to be Nature's watchword. The Psalmist says : "The righteous shall inherit the land/' If you go to a tropical forest, or, indeed, if you observe carefully a square acre of any English land, cultivated or uncultivated, you will find that Nature's text at first sight looks a very different one. She seems to say : Not the righteous, but the strong, shall inherit the land. Plant, insect, bird, what not — Find a weaker plant, insect, bird, than yourself, and kill it, and take possession of its little vineyard, and no Naboth/s curse shall follow you: but you shall inherit, and thrive therein, you, and your children after you, if they will be only as strong and as cruel as you are. That is Nature's law: and is it not at first sight a fearful law? Internecine competition, ruthless selfishness, so inter- necine and so ruthless that, as I have wandered in tropic forests, where this temper is shown more quickly and fiercely, though not in the least more evilly, than in our slow and cold temperate one, I have said : Really these trees and plants are as wicked as so many human beings. Throughout the great republic of the organic world, vii.] MUTUAL COMPETITION AND MUTUAL HELP. 175 the inotto of the majority is, and always has been as far back as we can see, what it is, and always has been, with the majority of human beings : c ' Everyone for himself, and the devil take the hindmost." Overreaching tyranny; the temper which fawns, and clings, and plays the parasite as long as it is down, and when it has risen, fattens on its patron's blood and life — these, and the other works of the flesh, are the works of average plants and animals, as far as they can practise them. At least, so says at first sight the science of bio-geology; till the naturalist, if he be also human and humane, is glad to escape from the confusion and darkness of the universal battle-field of selfishness into the order and light of Christmas-tide. For then there comes to him the thought — And are these all the facts ? And is this all which the facts mean ? That mutual competition is one law of Nature, we see too plainly. But is there not, besides that law, a law of mutual help ? True it is, as the wise man has said, that the very hyssop on the wall grows there because all the forces of the universe could not prevent its growing. All honour to the hyssop. A brave plant, it has fought a brave fight, and has its just deserts — as everything in Nature has — and so has won. But did all the powers of the universe combine to prevent it growing ? Is not that a one-sided statement of facts? Did not all the powers of the universe also combine to make it grow, if only it had valour and worth where- with to grow ? Did not the rains feed it, the very mortar in the wall give lime to its roots ? Were not electricity, gravitation, and I know not what of chemical and mechanical forces, busy about the little plant, and every cell of it, kindly and patiently ready to help it 176 ON BIO-GEOLOGY. [vn. if it would only help itself ? Surely this is true; true of every organic thing, animal and vegetable, and mineral too, for aught I know : and so we must soften our sadness at the sight of the universal mutual war by the sight of an equally universal mutual help. But more. It is true — too true if you will — that all things live on each other. But is it not, therefore, equally true that all things live for each other ? — that self-sacrifice, and not selfishness, is at the bottom the law of Nature, as it is the law of Grace; and the law of bio-geology, as it is the law of all religion and virtue worthy of the name ? Is it not true that everything has to help something else to live, whether it knows it or not ? — that not a plant or an animal can turn again to its dust without giving food and existence to other plants, other animals ? — that the very tiger, seemingly the most useless tyrant of all tyrants, is still of use, when, after sending out of the world suddenly, and all but painlessly, many an animal which would without him have starved in misery through a diseased old age, he himself dies, and, in dying, gives, by his own carcase, the means of life and of enjoyment to a thousandfold more living creatures than ever his paws destroyed ? And so, the longer one watches the great struggle for existence, the more charitable, the more hopeful, one becomes ; as one sees that, consciously or uncon- sciously, the law of Nature is, after all self-sacrifice : unconscious in plants and animals, as far as we know ; save always those magnificent instances of true self- sacrifice shown by the social insects, by ants, bees, and others, which put to shame by a civilisation truly noble — why should I not say divine, for God ordained it? — v«.] LAW OF SELF-SACRIFICE. 177 the selfishness and barbarism of man. But be that as it may, in man the law of self-sacrifice — whether un- conscious or not in the animals — rises into consciousness just as far as he is a man ; and the crowning lesson of bio-geology may be, when we have worked it out after all, the lesson of Christmas-tide — of the infinite self- sacrifice of God for man; and Nat ureas well as religion may say to us : Ah, could you crush that ever craving lust For bliss, which kills all bliss, and lose your life, Your barren unit life, to find again A thousand times in those for whom you die — So were you men and women, and should hold Your rightful rank in God's great universe, Wherein, in heaven or earth, by will or nature, Naught lives for self. All, all, from crown to base — The Lamb, before the world's foundation slain — The angels, ministers to God's elect — The sun, who only shines to light the worlds — The clouds, whose glory is to die in showers — The fleeting streams, who in their ocean graves Flee the decay of stagnant self -content — The oak, ennobled by the shipwright's axe — The soil, which yields its marrow to the flower — • The flower, which feeds a thousand velvet worms Born only to be prey to every bird — All spend themselves on others : and shall man, Whose twofold being is the mystic knot Which couples earth with heaven, doubly bound, As being both worm and angel, to that service By which both worms and angels hold their life, Shall he, whose every breath is debt on debt, Refuse, forsooth, to be what God has made him ? No ; let him show himself the creatures' Lord By free-will gift of that self-sacrifice Which they, perforce, by Nature's laws endure. SC. ' N 178 ON BIO-GEOLOGY. [vn. My friends, scientific and others, if the study of bio- geology shall help to teach you this, or anything like this, I think that though it may not make you more happy, it may yet make you more wise ; and, therefore, what is better than being more happy, namely, more blessed. THE STUDY OF NATURAL HISTORY FOR SOLDIERS. N 2 THE STUDY OF NATURAL HISTORY. GENTLEMEN : When I accepted the honour of lecturing here, I took for granted that so select an audience would expect from me not mere amusement, but somewhat of instruction ; or, if that be too ambitious a word for me to use, at least some fresh hint — if I were able to give one — as to how they should fulfil the ideal of military men in such an age as this. To touch on military matters, even had I been conversant with them, seemed to me an impertinence. I am bound to take for granted that every man knows his own business best ; and I incline more and more to the opinion that military men should be left to work out the problems of their art for themselves, without the advice or criticism of civilians. But I hold — and I am sure that you will agree with me — that if the soldier is to be thus trusted by the nation, and left to himself to do his own work his own way, he must be educated in all practical matters as highly as the average of educated civilians. He must know all that they know, and his own art besides. Just as a clergyman, being * A Lecture delivered to the Officers of the Eoy^il Artillery, Woolwich, 1872. 182 THE STUDY OF NATURAL HISTORY. [vm. a man plus a priest, is bound to be a man, and a good man, over and above his priesthood, so is the soldier bound to be a civilian, and a highly- educated civilian, plus his soldierly qualities and acquirements. It seemed to me, therefore, that I might, without impertinence, ask you to consider a branch of know- ledge which is becoming yearly more and more im- portant in the eyes of well-educated civilians; of which, therefore, the soldier ought at least to know something, in order to put him on a par with the general intelligence of the nation. I do not say that he is to devote much time to it, or to follow it up into specialities : but that he ought to be well grounded in its principles and methods ; that he ought to be aware of its importance and its usefulness; that so, if he comes into contact — as he will more and more — with scientific men, he may understand them, respect them, befriend them, and be befriended by them in turn; and how desirable this last result is, I shall tell you hereafter. ? There are those, I doubt not, among my audience who do not need the advice which I shall presume to give to-night ; who belong to that fast-increasing class among officers of whom I have often said — and I have found scientific men cordially agree with me — that they are the most modest and the most teachable of men. But even in their case there can be no harm in going over deliberately a question of such importance; in putting it, as it were, into shape ; and insisting on arguments which may perhaps not have occurred to some of them. Let me, in the first place, reassure those — if any such there be — who may suppose, from the title of my Tin.] THE HISTORY OF NATURE. 183 lecture, that I am only going to recommend them to collect weeds and butterflies, " rats and mice, and such small deer." Far from it. The honourable title of Natural History has, and unwisely, been restricted too much of late years to the mere study of plants and animals. I desire to restore the words to their original and proper meaning — the History of Nature ; that is, of all that is born, and grows in time ; in short, of all natural objects. v If any one shall say — By that definition you make not only geology and chemistry branches of natural history, but meteorology and astronomy likewise — I cannot deny it. They deal each of them, with realms of Nature. Geology is, literally, the natural history of soils and lands; chemistry the natural history of compounds, organic and inorganic; meteorology the natural history of climates; astronomy the natural history of planetary and solar bodies. And more, you cannot now study deeply any branch of what is popularly called Natural History — that is, plants and animals — without finding it necessary to learn some- thing, and more and more as you go deeper, of those very sciences. As the marvellous interdependence of all natural objects and forces unfolds itself more and more, so the once separate sciences, which treated of different classes of natural objects, are forced to inter- penetrate, as it were ; and to supplement themselves by knowledge borrowed from each other. Thus — to give a single instance — no man can now be a first-rate botanist unless he be also no mean meteorologist, no mean geologist, and — as Mr. Darwin has shown in his extraordinary discoveries about the fertilisation of plants by insects — no mean entomologist likewise. 184 THE STUDY OF NATURAL HISTORY. [VIH. 7 It is difficult, therefore, and indeed somewhat unwise and unfair, to put any limit to the term Natural History, save that it shall deal only with nature and with matter; and shall not pretend — as some would have it to do just now — to go out of its own sphere to meddle with moral and spiritual matters. But, for practical purposes, we may define the natural history of the causes which have made it what it is, and filled it with the natural objects which it holds. And if any one would know how to study the natural history of any given spot as the history of the causes which have made it what it is, and filled it with the natural objects which it holds. And if any one would know how to study the natural history of a place, and how to write it, let him read — and if he has read its delightful pages in youth, read once again — that hitherto unrivalled little monograph, White's "Natural History of Selborne; " and let him then try, by the light of improved science, to do for any district where he may be stationed, what White did for Selborne nearly one hundred years ago. Let him study its plants, its animals, its soils and rocks ; and last, but not least, its scenery, as the total outcome of what the soils, and plants, and animals, have made it. I say, have made it. How far the nature of the soils, and the rocks will affect the scenery of a district may be well learnt from a very clever and interesting little book of Professor Geikie's, on " The Scenery of Scotland as affected by its Geological Structure. J' How far the plants, and trees affect not merely the general beauty, the richness or barrenness of a country, but also its very shape ; the rate at which the hills are destroyed and washed into the lowland ; the : viii.] THE INDUCTIVE HABIT OF MID\- 185// rate at which, the seaboard is being removed b action of waves — all these are branches of stntfy wjiich is becoming more and more important. / : > And even in the study of animals and their effects on the vegetation, questions of really deep interest will arise. You will find that certain plants and trees cannot thrive in a district, while others can, because the former are browsed down by cattle, or their seeds eaten by birds, and the latter are not; that certain seeds are carried in the coats of animals, or wafted abroad by winds — others are not ; certain trees destroyed wholesale by insects, while others are not ; that in a hundred ways the animal and vegetable life of a district act and react upon each other, and that the climate, the average temperature, the maximum and minimum temperatures, the rainfall, act on them, and in the case of the vegetation, are reacted on again by them. The diminution of rainfall by the destruction of forests, its increase by replanting them, and the effect of both on the healthiness or unhealthiness of a place — as in the case of the Mauritius, where a once healthy island has become pestilential, seemingly from the clearing away of the vegetation on the banks of streams — all this, though to study it deeply requires a fair know- ledge of meteorology, and even of a science or two more, is surely well worth the attention of any educated man who is put in charge of the health and lives of human beings. You will surely agree with me that the habit of mind required for such a study as this, is the very same as is required for successful military study. In. fact, I should say that the same intellect which would develop into a great military man, would develop also 186 THE STUDY OF NATUEAL HISTORY. [vm. into a great naturalist. I say, intellect. The military man would require — what the naturalist would not — over and above his intellect, a special force of will, in order to translate his theories into fact, and make his campaigns in the field and not merely on paper. But I am speaking only of the habit of mind required for study ; of that inductive habit of mind which works, steadily and by rule, from the known to the unknown ; that habit of mind of which it has been said : et The habit of seeing ; the habit of knowing what we see ; the habit of discerning differences and likenesses ; the habit of classifying accordingly; the habit of searching for hypotheses which shall connect and explain those classified facts; the habit of verifying these hypotheses by applying them to fresh facts; the habit of throwing them away bravely if they will not fit ; the habit of general patience, diligence, accuracy, reverence for facts for their own sake, and love of truth for its own sake ; in one word, the habit of reverent and implicit obedience to" the laws of Nature, whatever they may be — these are not merely intellectual, but also moral habits, which will stand men in practical good stead in every affair of life, and in every question, even the most awful, which may come before them as rational and social beings. " And specially valuable are they, surely, to the military man, the very essence of whose study, to be successful, lies first in continuous and accurate observation, and then in calm and judicious arrangement. Therefore it is that I hold, and hold strongly, that the study of physical science, far from interfering with an officer's studies, much less unfitting for them, must assist him in them, by keeping his mind always TIII.] THE PHILOSOPHEE AND THE SOLDIEE. 187 in the very attitude and the very temper which they require. If any smile at this theory of mine, let them recol- lect one curious fact: that perhaps the greatest captain of the old world was trained by perhaps the greatest philosopher of the old world — the father of Natural History ; that Aristotle was the tutor of Alexander of Macedon. I do not fancy, of course, that Aristotle taught Alexander any Natural History. But this we know, that he taught him to use those very faculties by which Aristotle became a natural historian, and many things besides ; that he called out in his pupil somewhat of his own extraordinary powers of observa- tion, extraordinary powers of arrangement. He helped to make him a great general : but he helped to make him more — a great politician, coloniser, dis- coverer. He instilled into him such a sense of the importance of Natural History, that Alexander helped him nobly in his researches; and, if Athenaeus is to be believed, gave him eight hundred talents towards per- fecting his history of animals. Surely it is not too much to say that this close friendship between the natural philosopher and the soldier has changed the whole course of civilisation to this very day. Do not consider me utopian when I tell you, that I should like to see the study of physical science an integral part of the curriculum of every military school. I would train the mind of the lad who was to become hereafter an officer in the army — and in the navy likewise — by accustoming him to careful observation of, and sound thought about, the face of nature ; of the commonest objects under his feet, just as much as the stars above his head; pro- vided always that he learnt, not at second-hand from 188 THE STUDY OF NATURAL HISTORY. [TO. books, bat where alone lie can really learn either war or nature — in the field ; by actual observation, actual experiment. A laboratory for chemical experiment is a good thing, it is true, as far as it goes ; but I should prefer to the laboratory a naturalists' field- club, such as are prospering now at several of the best public schools, certain that the boys would get more of sound inductive habits of mind, as well as more health, man- liness, and cheerfulness, amid scenes to remember which will be a joy for ever, than they ever can by bending over retorts and crucibles, amid smells even to remember which is a pain for ever. But I would, whether a field- club existed or not, require of every young man entering the army or navy — indeed of every young man entering any liberal pro- fession whatsoever — a fair knowledge, such as would enable him to pass an examination, in what the Germans call Erd-kunde — earth-lore — in that know- ledge of the face of the earth and of its products, for which we English have as yet cared so little that we have actually no English name for it, save the clumsy and questionable one of physical geography; and, I am sorry to say, hardly any readable school books about it, save Keith Johnston's " Physical Atlas " — an acquaintance with which last I should certainly require of young men. i * It does seem most strange — or rather will seem most strange a hundred years hence — that we, the nation of colonists, the nation of sailors, the nation of foreign commerce, the nation of foreign military stations, the nation of travellers for travelling's sake, the nation of which one man here and another there — as Schleiden sets forth in his book, " The Plant/' in a charming ideal conversation at the Travellers' Club — has seen and YIII.] IMPORTANCE OF BOTANY TO SOLDIEES. 189 enjoyed more of the wonders and beauties of this planet than the men of any nation, not even excepting the Germans — that this nation, I say, should as yet have done nothing, or all but nothing, to teach in her schools a knowledge of that planet, of which she needs to know more, and can if she will know more, than any other nation upon it. As for the practical utility of such studies to a soldier, I only need, I trust, to hint at it to such an assembly as this. All must see of what advantage a rough knowledge of the botany of a district would be to an officer leading an exploring party, or engaged in bush warfare. To know what plants are poisonous ; what plants, too, are eatable — and many more are eat- able than is usually supposed; what plants yield oleaginous substances, whether for food or for other uses ; what plants yield vegetable acids, as preventives of scurvy; what timbers are available for each of many different purposes; what will resist wet, salt-water, and the attacks of insects ; what, again, can be used, at a pinch, for medicine or for styptics — and be sure, as a wise West Indian doctor once said to me, that there is more good medicine wild in the bush than there is in all the druggists' shops — surely all this is a knowledge not beneath the notice of any enter- prising officer, above all of an officer of engineers. I only ask any one who thinks that I may be in the right, to glance through the lists of useful vegetable products given in Lindley's "Vegetable Kingdom "— a miracle of learning — and see the vast field open still to a thoughtful and observant man, even while on service ; and not to forget that such knowledge, if he should hereafter leave the service and settle, as many do, in a distant land, may be a solid help to his future 190 THE STUDY OF NATUKAL HISTORY. [vin. prosperity. So strongly do I feel on this matter, that I should like to see some knowledge at least of Dr. Oliver's excellent little "First Book of Indian Botany " required of all officers going to our Indian Empire : but as that will not be, at least for many a year to come, I recommend any gentlemen going to India to get that book, and while away the hours of the outward voyage by acquiring knowledge which will be a continual source of interest, and it may be now and then of profit, to them during their stay abroad. / r And for geology, again. As I do not expect you all, or perhaps any of you, to become such botanists as General Monro, whose recent "Monograph of the Bamboos3' is an honour to British botanists, and a proof of the scientific power which is to be found here and there among British officers : so I do not expect you to become such geologists as Sir Eoderick Murchison, or even to add such a grand chapter to the history of extinct animals as Major Cautley did by his discoveries in the Sewalik Hills. Nevertheless, yo in learn — and I should earnestly advise you to learn — geology and mineralogy enough to be of great use to you in your profession, and of use, too, should you relinquish your profession hereafter. It must be profitable for any man, and specially for you, to know how and where to find good limestone, building stone, road metal ; it must be good to be able to distinguish ores and mineral products ; it must be good to know — as a geologist will usually know, even in a country which he sees for the first time — where water is likely to be found, and at what probable depth ; it must be good to know whether the water is fit for drinking or not, Tin.] SCIENTIFIC AND SANATORY LAWS. 191 whether it is unwholesome or merely muddy ; it must be good to know what spots are likely to be healthy, and what unhealthy, for encamping. The two last questions depend, doubtless, on meteorological as well as geological accidents : but the answers to them will be most surely found out by the scientific man, because the facts connected with them are, like all other facts, determined by natural laws. After what one has heard, in past years, of barracks built in spots plainly pesti- lential ; of soldiers encamped in ruined cities, reeking with the dirt and poison of centuries; of — but it is not my place to find fault ; all I will say is, that the wise and humane officer, when once his eyes are opened to the practical value of physical science, will surely try to acquaint himself somewhat with those laws of drainage and of climate, geological, meteorological, chemical, which influence, often with terrible sudden- ness and fury, the health of whole armies. He will not find it beyond his province to ascertain the amount and period of rainfalls, the maxima of heat and of cold wt his troops may have to endure, and many another poLit, on which their health and efficiency — nay, their very life may depend, but which are now too exclu- sively delegated to the doctor, to whose province they do not really belong. For cure, I take the liberty of believing, is the duty of the medical officer; prevention, that of the military. Thus much I can say just now — and there is much more to be said — on the practical uses of the study of Natural History. But let me remind you, on the other side, if Natural History will help you, you in return can help her ; and would, I doubt not, help her and help scientific men at home., if once you looked fairly 'and 192 THE STUDY OF NATURAL HISTORY. [vm. steadily at the immense importance of Natural History — of the knowledge of the " face of the earth." I believe that all will one day feel, more or less, that to know the earth on which we live, and the laws of it by which we live, is a sacred duty to ourselves, to our children after us, and to all whom we may have to command and to influence ; ay, and a duty to God likewise. For is it not a duty of common reverence and faith towards Him, if He has put us into a beautiful and wonderful place, and given us faculties by which we can see, and enjoy, and use that place — is it not a duty of reverence and faith towards Him to use these faculties, and to learn the lessons which He has laid open for us ? If you feel that, as I think you all will some day feel, then you will surely feel likewise that it will be a good deed — I do not say a necessary duty, but still a good deed and praiseworthy — to help physical science forward ; and to add your contributions, how- ever small, to our general knowledge of the earth. And how much may be done for science by British officers, especially on foreign stations, I need not point out. I know that much has been done, chivalrously and well, by officers ; and that men of science owe them and give them hearty thanks for their labours. But I should like, I confess, to see more done still. I should like to see every foreign station what one or two highly- educated officers might easily make it, an advanced post of physical science, in regular communication with our scientific societies at home, sending to them accurate and methodic details of the natural history of each district — details -^nrtlis of which might seem worthless in the eyes of the public, but which would all be precious in the eyes of scientific men, who know thaj TUI.] WORK ON FOREIGN STATIONS. 193 no fact is really unimportant ; and more, that while plodding patiently through seemingly unimportant facts, you may stumble on one of infinite importance, both scientific and practical. For the student of nature, gentlemen, if he will be but patient, diligent, metho- dical, is liable at any moment to the same good fortune as befell Saul of old, when he went out to seek his father's asses, and found a kingdom. • There are those, lastly, who have neither time nor taste for the technicalities and nice distinctions of formal Natural History; who enjoy Nature, but as artists or as sportsmen, and not as men of science. Let them follow their bent freely : but let them not suppose that in following it they can do nothing to- wards enlarging our knowledge of Nature, especially when on foreign stations. So far from it, drawings ought always to be valuable, whether of plants, animals, or scenery, provided only they are accurate ; and the more spirited and full of genius they are, the more accurate they are certain to be ; for Nature being alive, a lifeless copy of her is necessarily an untrue copy. Most thankful to any officer for a mere sight of sketches will be the closest botanist, who, to his own sorrow, knows three-fourths of his plants only from dried specimens ; or the closest zoologist, who knows his animals from skins and bones. And if any one answers — But I cannot draw. I rejoin, You can at least photograph. If a young officer, going out to foreign parts, and knowing nothing at all about physical science, did me the honour to ask me what he could do for science, I should tell him — Learn to photograph ; take photographs of every strange bit of rock-formation which strikes your fancy, and of every so. o 194 THE STUDY OF NATURAL HISTORY. [vm. widely-extended view which may give a notion of the general lie of the country. Append, if you can, a note or two, saying whether a plain is rich or barren; whether the rock is sandstone, limestone, granitic, metamorphic, or volcanic lava ; and if there be more rocks than one, which of them lies on the other; and send them to be exhibited at a meeting of the Geological Society. I doubt not that the learned gentlemen there will find in your photographs a valu- able hint or two, for which they will be much obliged. I learnt, for instance, what seemed to me most valuable geological lessons from mere glances at drawings — I believe from photographs — of the Abyssinian ranges about Magdala. Or again, let a man, if he knows nothing of botany, not trouble himself with collecting and drying speci- mens ; let him simply photograph every strange and new tree or plant he sees, to give a general notion of its species, its look ; let him append, where he can, a photograph of its leafage, flower, fruit ; and send them to Dr. Hooker, or any distinguished botanist : and he will find that, though he may know nothing of botany, he will have pretty certainly increased the knowledge of those who do know. The sportsman, again — I mean the sportsman of that type which seems peculiar to these islands, who loves toil and danger for their own sakes ; he surely is a naturalist, ipso facto, though he knows it not. He has those very habits of keen observation on which all sound knowledge of nature is based ; and he, if he will — as he may do without interfering with his sport — can study the habits of the animals among whom he spends wholesome and exciting days. You have only Tin.] THE UNCONSCIOUS NATURALIST. 195 to look over such good old books as Williams's " Wild Sports of the East/' Campbell's " Old Forest Ranger," Lloyd's " Scandinavian Adventures/' and last, but not least, Waterton's " Wanderings," to see what valuable additions to true zoology — the knowledge of live creatures,, not merely dead ones — British sportsmen have made, and still can make. And as for the employment of time, which often hangs so heavily on a soldier's hands, really I am ready to say, if you are neither men of science, nor draughtsmen, nor sports- men, why, go and collect beetles. It is not very dignified, I know, nor exciting : but it will be some- thing to do. It cannot harm you, if you take, as beetle-hunters do, an indiarubber sheet to lie on ; and it will certainly benefit science. Moreover, there will be a noble humility in the act. You will confess to the public that you consider yourself only fit to catch beetles; by which very confession you will prove yourself fit for much finer things than catching beetles; and meanwhile, as I said before, you will be at least out of harm's way. At a foreign barrack once, the happiest officer I met, because the most regularly employed, was one who spent his time in collecting butterflies. He knew nothing about them scientifically — not even their names. He took them simply for their wonderful beauty and variety ; and in the hope, too — in which he was really scientific — that if he care- fully kept every form which he saw, his collection might be of use some day to entomologists at home. A most pleasant gentleman he was ; and, I doubt not, none the worse soldier for his butterfly catching. Commendable, also, in my eyes, was another officer — whom I have not the pleasure of knowing — who, on a o 2 196 THE STUDY OF NATURAL HISTORY. [vin. remote foreign station, used wisely to escape from the temptations of the world into an entirely original and most pleasant hermitage. For finding — so the story went — that many of the finest insects kept to the tree- tops, and never came to ground at all, he used to settle himself among the boughs of some tree in the tropic forests, with a long-handled net and plenty of cigars, and pass his hours in that airy flower-garden, making dashes every now and then at some splendid monster as it fluttered round his head. His example need not be followed by every one ; but it must be allowed that -^at least as long as he was in his tree— he was neither dawdling, grumbling, spending money, nor otherwise- harming himself, and perhaps his fellow -creatures, from sheer want of employment. ~i£> One word more, and I have done. If I was allowed to give one special piece of advice to a young officer, whether of the army or navy, I would say : Respect scientific men; associate with them; learn from them ; find them to be, as you will usually, the most pleasant and instructive of companions — but always respect them. Allow them chivalrously, you who have an acknowledged rank, their yet unacknowledged rank; and treat them as all the world will treat them in a higher and truer state of civilisation. They do not yet wear the Queen's uniform; they are not yet accepted servants of the State ; as they will be in some more perfectly organised and civilised land : but they are soldiers nevertheless, and good soldiers and chivalrous, fighting their nation's battle, often on even less pay than you, and with still less chance of promotion and of fame, against most real and fatal enemies — against ignorance of the laws of this planet, and all the miseries which viii.] HONOUR TO WHOM HONOUR IS DUE. 197 that ignorance begets. Honour them for their work ; sympathise in it; give them a helping hand in it whenever you have an opportunity — and what oppor- tunities you have, I have been trying to sketch for you to-night ; and more, work at it yourselves when- ever and wherever you can. Show them that the spirit which animates them — the hatred of ignorance and disorder, and of their bestial consequences — animates you likewise ; show them that the habit of mind which they value in themselves — the habit of accurate observation and careful judgment — is your habit likewise ; show them that you value science, not merely because it gives better weapons of destruc- tion and of defence, but because it helps you to become clear-headed, large-minded, able to take a just and accurate view of any subject which comes before you, and to cast away every old prejudice and every hasty judgment in the face of truth and of duty : and it will be better for you and for them. But why ? What need for the soldier and the man of science to fraternise just now ? This need : the two classes which will have an increasing, it may be a preponderating, influence on the fate of the human race for some time, will be the pupils of Aristotle and those of Alexander — the men of science and the soldiers. In spite of all appearances, and all declamations to the contrary, that is my firm con- viction. They, and they alone, will be left to rule; because they alone, each in his own sphere, have learnt to obey. It is therefore most needful for the welfare of society that they should pull with, and not against each other ; that they should understand each other, respect each other, take counsel with each 198 THE STUDY OF NATURAL HISTORY. [vm. other, supplement each other's defects, bring out each other's higher tendencies, counteract each other's lower ones. The scientific man has something to learn of you, gentlemen, which I doubt not that he will learn in good time. You, again, have — as I have been hinting to you to-night — something to learn of him, which you, I doubt not, will learn in good time likewise. Repeat, each of you according to his powers, the old friendship between Aristotle and Alexander ; and so, from your mutual sympathy and co-operation, a class of thinkers and actors may yet arise which can save this nation, and the other civilised nations of the world, from that of which I had rather not speak, and wish that I did not think, too often and too earnestly. > I/ 1 may be a dreamer ; and I may consider, in my turn, as wilder dreamers than myself, certain persons who fancy that their only business in life is to make money, the scientific man's only business is to show them how to make money, and the soldier's only business to guard their money for them. Be that as it may, the finest type of civilised man which we are likely to see for some generations to come, will be produced by a combination of the truly military with the truly scientific man. I say — I may be a dreamer ; but you at least, as well as my scientific friends, will bear with me ; for my dream is to your honour. SUPERSTITION. SUPERSTITION.* HAVING accepted the very great honour of being allowed to deliver here two lectures, I have chosen as my subject Superstition and Science. It is with Superstition that this first lecture will deal. The subject seems to me especially fit for a clergy- man ; for he should, more than other men, be able to avoid trenching on two subjects rightly excluded from this Institution; namely, Theology — that is, the know- ledge of God; and Religion — that is, the knowledge of Duty. If he knows, as he should, what is Theology, and what is Religion, then he should best know what is not Theology, and what is not Religion. For my own part, I entreat you at the outset to keep in mind that these lectures treat of matters entirely physical ; which have in reality, and ought to have in our minds, no more to do with Theology and Religion than the proposition that theft is wrong, has to do with the proposition that the three angles of a triangle are equal to two right angles. * A Lecture delivered at the Koyal Institution, London, 1867. 202 SUPEESTITION. [ix. It is necessary to premise this, because many are of opinion that superstition is a corruption of religion ; and though they would agree that as such, " corruptio optimi pessima," yet they would look on religion as the state of spiritual health, and superstition as one of spiritual disease. Others again, holding the same notion, but not con- sidering that into a science ; and create a whole mythology out of his blind fear of the unknown. And when he has done that — Woe to the weak ! For when he has reduced his superstition to a science, then he will reduce his cruelty to a science likewise, and write books like the " Malleus Maleficarum/' and the rest of the witch literature of the fifteenth, sixteenth, and seventeenth centuries; of which Mr. Lecky has of late told the world so much, and told it most faithfully and most fairly. But, fear of the unknown ? Is not that fear of the unseen world ? And is not that fear of the spiritual world ? Pardon me : a great deal of that fear — all of it, indeed, which is superstition — is simply not fear of the spiritual, but of the material ; and of nothing else. 4 The spiritual world — I beg you to fix this in your minds — is not merely an invisible world which may become visible, but an invisible world which is by its essence invisible ; a moral world, a world of right and wrong. And spiritual fear — which is one of the noblest of all affections, as bodily fear is one of the basest — is, \ if properly defined, nothing less or more than the fear/ of doing wrong ; of becoming a worse man. - But what has that to do with mere fear of the unseen? The fancy which conceives the fear is physical, not spiritual. Think for yourselves. What difference is 208 SUPERSTITION, [ix. there between a savage's fear of a demon, and a hunter's fear of a fall ? The hunter sees a fence. He does not know what is on the other side, but he has seen fences like it with a great ditch on the other side, and suspects one here likewise. He has seen horses fall at such, and men hurt thereby. He pictures to himself his horse falling at that fence, himself rolling in the ditch, with possibly a broken limb ; and he recoils from the picture he himself has made; and perhaps with very good reason. His picture may have its counterpart in fact ; and he may break his leg. But his picture, like the previous pictures from which it was compounded, is simply a physical impression on the brain, just as much as those in dreams. Now, does the fact of the ditch, the fall, and the broken leg, being unseen and unknown, make them a spiritual ditch, a spiritual fall, a spiritual broken leg ? And does the fact of the demon and his doings, being as yet unseen and unknown, make them spiritual, or the harm that he may do, a spiritual harm ? What does the savage fear ? Lest the demon should appear ; that is, become obvious to his physical senses, and pro- duce an unpleasant physical effect on them. He fears lest the fiend should entice him into the bog, break the hand-bridge over the brook, turn into a horse and ride away with him, or jump out from behind a tree and wring his neck — tolerably hard physical facts, all of them ; the children of physical fancy, regarded with physical dread. Even if the superstition proved true ; even if the demon did appear ; even if he wrung the traveller's neck in sound earnest, there would be no more spiritual agency or phenomenon in the whole tragedy than there is in the parlour- table, when ix.] FEAB, THE CAUSE OF SUPEKSTITION. 209 spiritual somethings make spiritual raps upon spiritual wood ; and human beings, who are really spirits — and would to heaven they would remember that fact, and what it means — believe that anything has happened beyond a clumsy juggler's trick. You demur ? Do you not see that the demon, by the mere fact of having produced physical consequences, would have become himself a physical agent, a member of physical Nature, and therefore to be explained, he and his doings, by physical laws ? If you do not see that conclusion at first sight, think over it till you do. It may seem to some that I have founded my theory on a very narrow basis ; that I am building up an inverted pyramid; or that, considering the number- less, complex, fantastic shapes which superstition has assumed, bodily fear is too simple to explain them all. But if those persons will think a second time, they must agree that my base is as broad as the phenomena which it explains ; for every man is capable of fear. And they will see, too, that the cause of superstition must be something like fear, which is common to all men : for all, at least as children, are capable of super- stition ; and that it must be something which, like fear, is of a most simple, rudimentary, barbaric kind ; for the lowest savage, of whatever he is not capable, is still superstitious, often to a very ugly degree. Superstition seems, indeed, to be, next to the making of stone- weapons, the earliest method of asserting his supe- riority to the brutes which has occurred to that utterly abnormal and fantastic lusus naturce called man. Now let us put ourselves awhile, as far as we can, in the place of that same savage ; and try whether my theory will not justify itself; whether or not-super- sc. p 210 SUPERSTITION. [ix, stition, with, all its vagaries, may have been, indeed must have been, the result of that ignorance and fear which he carried about with him, every time he prowled for food through the primeval forest. A savage's first division of nature would be, I should say, into things which he can eat and things which can eat him : including, of course, his most formidable enemy, and most savoury food — his fellow-man. In finding out what he can eat, we must remember, he will have gone through much experience which will have inspired him with a serious respect for the hidden wrath of nature ; like those Himalayan folk, of whom Hooker says, that as they know every poisonous plant, they must have tried them all — not always with impunity. So he gets at a third class of objects — things which he cannot eat, and which will not eat him ; but will only do him harm, as it seems to him, out of pure malice, like poisonous plants and serpents. There are natural accidents, too, which fall into the same category, stones, floods, fires, avalanches. They hurt him or kill him, surely for ends of their own. If a rock falls from, the cliff above him, what more natural than to suppose that there is some giant up there who threw it at him ? If he had been up there, and strong enough, and had seen a man walking underneath, he would certainly have thrown the stone at him and killed him. For first, he might have eaten the man after; and even if he were not hungry, the man might have done him a mischief ; and it was prudent to prevent that by doing him a mischief first. Besides, the man might have a wife ; and if he killed the man, then the wife would, by a very ancient law common to man and animals., ix.] THE TERRORS OF NATURE. 211 become the prize of the victor. Such is tbe natural man, the carnal man, the soulish man, the avfyvTros ^VXIKOS of St. Paul, with five tolerably acute senses, which are ruled by five very acute animal passions — hunger, sex, rage, vanity, fear. It is with the working of the last passion, fear, that this lecture has to do. So the savage concludes that there must be a giant living in the cliff, who threw stones at him, with evil intent ; and he concludes in like wise concerning most other natural phenomena. There is something in them which will hurt him, and therefore likes to hurt him ; and if he cannot destroy them, and so deliver himself, his fear of them grows quite boundless. There are hundreds of natural objects on which he learns to look with the same eyes as the little boys of Teneriffe look on the useless and poisonous Euphorbia canariensis. It is to them — according to Mr. Piazzi Smyth — a demon who would kill them, if it could only run after them ; but as it cannot, they shout Spanish curses at it, and pelt it with volleys of stones, <( screeching with elfin joy, and using worse names than ever, when the poisonous milk spurts out from its bruised stalks." And if such be the attitude of the uneducated man towards the permanent terrors of nature, what will it be towards those which are sudden and seemingly capricious ? — towards storms, earthquakes, floods, blights, pestilences ? We know too well what it has been — one of blind, and therefore often cruel, fear. How could it be otherwise ? Was Theophrastus's superstitious man so very foolish for pouring oil on every round stone ? I think there was a great deal to be said for him. This worship of -Baetyli was rational enough. They were aerolites, fallen from heaven. p 2 212 SUPERSTITION. [ix. Was it not as well to be civil to such messengers from above ? — to testify by homage to them due awe of the being who had thrown them at men, and who though he had missed his shot that time might not miss it the next ? I think if we, knowing nothing of either gun- powder, astronomy, or Christianity, saw an Armstrong bolt fall within five miles of London, we should be inclined to be very respectful to it indeed. So the aerolites, or glacial boulders, or polished stone weapons of an extinct race, which looked like aerolites, were the children of Ouranos the heaven, and had souls in them. One, by one of those strange transformations in which the logic of unreason in- dulges, the image of Diana of the Ephesi-ans, which fell down from Jupiter ; another was the Ancile, the holy shield which fell from the same place in the days of Numa Pompilius, and was the guardian genius of Rome ; and several more became notable for ages. Why not ? The uneducated man of genius, un- acquainted alike with metaphysics and with biology, sees, like a child, a personality in every strange and sharply-defined object. A cloud like an angel may be an angel ; a bit of crooked root like a man may be a man turned into wood — perhaps to be turned back again at its own will. An erratic block has arrived where it is by strange unknown means. Is not that an evidence of its personality ? Either it has flown hither itself, or some one has thrown it. In the former case, it has life, and is proportionally formidable ; in the latter, he who had thrown it is formidable. I know two erratic blocks of porphyry — I believe there are three — in Cornwall, lying one on serpentine, one, I think, on slate, which — so I was always informed ix.] THE SAVAGE A CHILD. 213 as a boy — were the stones which St. Kevern threw after St. Just when the latter stole his host's chalice and paten, and ran away with them to the Land's End. Why not ? Before we knew anything about the action of icebergs and glaciers, that is, until the last eighty years, that was as good a story as any other ; while how lifelike these boulders are, let a great poet testify ; for the fact has not escaped the delicate eye of Wordsworth : As a huge stone is sometimes seen to lie Couched on the bald top of an eminence ; Wonder to all who do the same espy, By what means it could thither come, and jvhence, So that it seems a thing endued with sense ; Like a sea-beast crawled forth, that on a shelf Of rock or sand reposeth, there to sun itself. To the civilised poet, the fancy becomes a beautiful simile ; to a savage poet, it would have become a ma- terial and a very formidable fact. He stands in the valley, and looks up at the boulder on the far-off fells. He is puzzled by it. He fears it. At last he makes up his mind. It is alive. As the shadows move over it, he sfies it move. May it not sleep there all day, and prowl for prey all night ? He had been always afraid of going up those fells ; now he will never go. There is a monster there. Childish enough, no doubt. But remember that the savage is always a child. So, indeed, are millions, as well clothed, housed, and policed as ourselves — children from the cradle to the grave. But of them I do not talk ; because, happily for the world, their childishness is so overlaid by the result of other men's manhood ; 214 SUPEESTITION. [ix. by an atmosphere of civilisation and Christianity which they have accepted at second-hand as the conclusions of minds wiser than their own, that they do all manner of reasonable things for bad reasons, or for no reason at all, save the passion of imitation. Not in them, but in the savage, can we see man as he is by nature, the puppet of his senses and his passions, the natural slave of his own fears. But has the savage no other faculties, save his five senses and five passions ? I do not say that. I should be most unphilosophical if I said it ; for the history of mankind proves that he has infinitely more in him than that. Yes : but in him that infinite more, which is not only the noblest part of humanity, but, it may be, humanity itself, is not to be counted as one of the roots of superstition. For in the savage man, in whom superstition certainly originates, that infinite more is still merely in him ; inside him; a faculty : but not yet a fact. It has not come out of him into consciousness, purpose, and act ; and is to be treated as non-existent : while what has come out, his passions and senses, is enough to explain all the vagaries of superstition ; a vera causa for all its phenomena. And if we seem to have found a sufficient explanation already, it is un- philosophical to look farther, at least till we have tried whether our explanation fits the facts. Nevertheless, there is another faculty in the savage, to which I have already alluded, common to him and to at least the higher vertebrates — fancy ; the power of reproducing internal images of external objects, whether in its waking form of physical memory — if, indeed, all memory be not physical — or in its sleeping form of dreaming. Upon this last, which has played ix.] POWEE OF DEEAMS. ' 215 so very important a part in superstition in all ages, I beg you to think a moment. Recollect your own dreams during childhood ; and recollect again that the savage is always a child. Recollect how difficult it was for you in childhood, how difficult it must be always for the savage, to decide whether dreams are phantasms or realities. To the savage, I doubt not, the food he eats, the foes he grapples with, in dreams, are as real as any waking impressions. But, moreover, these dreams will be very often, as children's dreams are wont to be, of a painful and terrible kind. Perhaps they will be always painful ; perhaps his dull brain will never dream, save under the influence of indigestion, or hunger, or an uncomfortable attitude. And so, in addition to his waking experience of the terrors of nature, he will have a whole dream- experience besides, of a still more terrific kind. He walks by day past a black cavern mouth, and thinks, with a shudder — Something ugly may live in that ugly hole : what if it jumped out upon me? He broods over the thought with the intensity of a narrow and unoccupied mind; and a few nights after, he has eaten — but let us draw a veil before the larder of a savage — his chin is pinned down on his chest, a slight congestion of the brain comes on ; and behold he finds himself again at that cavern's mouth, and something ugly does jump out upon him : and the cavern is a haunted spot henceforth to him and to all his tribe. It is in vain that his family tell him that he has been lying asleep at home all the while. He has the evidence of his senses to prove the contrary. He must have got out of himself, and gone into the woods. When we remember that certain wise Oreek philosophers could find no better explanation 216 SUPEESTITION. [ix of dreaming than that the soul left the body, and wandered free, we cannot condemn the savage for his theory. Now, I submit that in these simple facts we have a group of ' ' true causes " which are the roots of all the superstitions of the world. And if any one shall complain that I am talking materialism : I shall answer, that I am doing exactly the opposite. I am trying to eliminate and get rid of that which is material, animal, and base ; in order that that which is truly spiritual may stand out, distinct and clear, in its divine and eternal beauty. To explain, and at the same time, as I think, to verify my hypothesis, let me give you an example — fictitious, it is true, but probable fact nevertheless ; because it is patched up of many fragments of actual fact : and let us see how, in following it out, we shall pass 'through almost every possible form of superstition. Suppose a great hollow tree, in which the formidable wasps of the tropics have built for ages. The average savage hurries past the spot in mere bodily fear ; for if they come out against him, they will sting him to death ; till at last there comes by a savage wiser than the rest, with more observation, reflection, imagination, independence of will — the genius of his tribe. The awful shade of the great tree, added to his terror of the wasps, weighs on him, and excites his brain. Perhaps, too, he has had a wife or a child stung to death by these same wasps. These wasps, so small, yet so wise, far wiser than he : they fly^ and they sting. Ah, if he could fly and sting ; how he would kill and eat, and live right merrily. They build great ix.] THE WASP- KING. 217 towns ; they rob far and wide ; they never quarrel with each other : they must have some one to teach them, to lead them — they must have a king. And so he gets the fancy of a Wasp-King ; as the western Irish still believe in the Master Otter ; as the Red Men believe in the King of the Buffaloes, and find the bones of his ancestors in the Mammoth remains of Big-bone Lick ; as the Philistines of Ekron — to quote a notorious instance — actually worshipped Baal-zebub, lord of the flies. If they have a king, he must be inside that tree, of course. If he, the savage, were a king, he would not work for his bread, but sit at home and make others feed him ; and so, no doubt, does the wasp- king. And when he goes home he will brood over this wonderful discovery of the wasp -king ; till, like a child, he can think of nothing else. He will go to the tree, and watch for him to come out. The wasps will get accustomed to his motionless figure, and leave him unhurt; till the new fancy will rise in his mind that he is a favourite of this wasp-king : and at last he will find himself grovelling before the tree, saying — " Oh great wasp-king, pity me, and tell your children not to sting me, and I will bring you honey, and fruit, and flowers to eat, and I will flatter you, and worship you, and you shall be my king." And then he would gradually boast of his discovery ; of the new mysterious bond between him and the wasp- king ; and his tribe would believe him, and fear him ; and fear him still more when he began to say, as he surely would, not merely — " I can ask the wasp -king, and he will tell his children not to sting you:" but — • " I can ask the wasp-king, -and he will send his children, 218 SUPEKSTITION. [ix. and sting you all to death." Vanity and ambition will have prompted the threat : but it will not be altogether a lie. The man will more than half believe his own words; he will quite believe them when he has repeated them a dozen times. And so he will become a great man, and a king, under the protection of the king of the wasps ; and he will become, and it may be his children after him, priest of the wasp-king, who will be their fetish, and the fetish of their tribe. And they will prosper, under the protection of the wasp-king. The wasp will become their moral ideal, whose virtues they must copy. The new chief will preach to them wild eloquent words. They must sting like wasps, revenge like wasps, hold altogether like wasps, build like wasps, work hard like wasps, rob like wasps ; then, like the wasps, they will be the terror of all around, and kill and eat all their enemies. Soon they will call themselves The Wasps. They will boast that their king's father or grandfather, and soon that the ancestor of the whole tribe was an actual wasp ; and the wasp will become at once their eponym hero, their deity, their ideal, their civiliser ; who has taught them to build a kraal of huts, as he taught his children to build a hive. Now, if there should come t6 any thinking man of this tribe, at this epoch, the new thought — Who made the world ? he will be sorely puzzled. The conception of a world has never crossed his mind before. He never pictured to himself anything beyond the nearest ridge of mountains; and as for a Maker, that will be a greater puzzle still. What makers or builders more cunning than those wasps of whom his foolish head is full ? Of ix.] WORSHIP FROM FEAR. 219 course, lie sees it now. A Wasp made the world ; which to him entirely new guess might become an integral part of his tribe's creed. That would be their cos- mogony. And if, a generation or two after, another savage genius should guess that the world was a globe hanging in the heavens, he would, if he had imagination enough to take the thought in at all, put it to himself in a form suited to his previous knowledge and concep- tions. It would seem to him that The Wasp flew about the skies with the world in his mouth, as he carries a bluebottle fly ; and that would be the astronomy of his tribe henceforth. Absurd enough : but — as every man who is acquainted with old mythical cosmogonies must know — no more absurd than twenty similar guesses on record. Try to imagine the gradual genesis of such myths as the Egyptian scarabaeus and egg, or the Hindoo theory that the world stood on an elephant, the elephant on a tortoise, the tortoise on that infinite note of in- terrogation which, as some one expresses it, underlies all physical speculations, and judge : must they not have arisen in some such fashion as that which I have pointed out ? This, I say, would be the culminating point of the wasp-worship, which had sprung up out of bodily fear of being stung. , But times might come for it in which it would go through various changes, through which every super- stition in the world, I suppose, has passed or is doomed to pass. The wasp-men might be conquered, and possibly eaten, by a stronger tribe than themselves. What would be the result ? They would fight valiantly at first, like wasps. But what if they began to fail ? 220 SUPERSTITION. [ix. Was not the wasp-king angry with them ? Had not he deserted them ? He must be appeased ; he must have his revenge. They would take a captive, and offer him to the wasps. So did a North American tribe, in their need, some forty years ago; when, because their maize-crops failed, they roasted alive a captive girl, cut her to pieces, and sowed her with their corn. I would not tell the story, for the horror of it, did it not bear with such fearful force on my argument. What were those Red Men thinking of ? What chain of misreasoning had they in their heads when they hit on that as a device for making the crops grow ? Who can tell ? Who can make the crooked straight, or number that which is wanting ? As said Solomon of old, so must we — "The foolishness of fools is folly." One thing only we can say of them, that they were horribly afraid of famine, and took that means of ridding themselves of their fear. But what if the wasp tribe had no captives ? They would offer slaves. What if the agony and death of slaves did not appease the wasps ? They would offer their fairest, their dearest, their sons and their daughters, to the wasps ; as the Carthaginians, in like strait, offered in one day 200 noble boys to Moloch, the volcano -god, whose worship they had brought out of Syria ; whose original meaning they had probably forgotten ; of whom they only knew that he was a dark and devouring being, who must be appeased with the burning bodies of their sons and daughters. And so the veil of fancy would be lifted again, and the whole superstition stand forth revealed as the mere offspring of bodily fear. But more : the survivors of the conquest might, ix.] FETISH WORSHIP. '//. 221^ , •P y:'/ perhaps, escape, and carry their wasp -f etish, ^IJK> a new.y land. But if they became poor and weaMy/^heir /', brains and imagination, degenerating with their bodies, would degrade their wasp-worship till they knew not what it meant. Away from the sacred tree, in a •country the wasps of which were not so large or for- midable, they would require a remembrancer of the wasp-king ; and they would make one — a wasp of wood, or what not. After. a while, according to that strange law of fancy, the root of all idolatry, which you may see at work in every child who plays with a doll, the symbol would become identified with the thing ) symbolised ; they would invest the wooden wasp with all the terrible attributes which had belonged to the live wasps of the tree ; and after a few centuries, when all remembrance of the tree, the wasp -prophet and chieftain, and his descent from the divine wasp — ay, even of their defeat and flight — had vanished from their songs and legends, they would be found bowing down in fear and trembling to a little ancient wooden wasp, which came from they knew not whence, and meant they knew not what, save that it was a very 11 old f etish/' a " great medicine," or some such other formula for expressing their own ignorance and dread. , / Just so do the half-savage natives of Thibet, and the Irishwomen of Kerry, by a strange coincidence — unless the ancient Irish were Buddhists, like the Himalayans — tie just the same scraps of rag on the bushes round just the same holy wells, as do the Negros of Central Africa upon their " Devil's Trees ; " they know not why, save that their ancestors did it, and it is a charm against ill-luck and danger. And the sacred tree ? That, too, might undergo a 222 SUPEKSTITION. [ix. metamorphosis in the minds of men. The conquerors would see their aboriginal slaves of the old race still haunting the tree, making stealthy offerings to it by night: and they would ask the reason. But they would not be told. The secret would be guarded ; such secrets were guarded, in Greece, in Italy, in medieval France, by the superstitious awe, the cunning, even the hidden self-conceit, of the conquered race. Then the conquerors would wish to imitate their own slaves. They might be in the right. There might be some- thing magical, uncanny, in the hollow tree, which might hurt them ; might be jealous of them as intruders. They, too, would invest the place with sacred awe. If they were gloomy, like the Teutonic conquerors of Europe and the Arabian conquerors of the East, they would invest it with unseen terrors. They would say,. like them, a devil lives in the tree. If they were of a sunny temper, like the Hellenes, they would invest it with unseen graces. What a noble tree ! What a fair fountain hard by its roots ! Surely some fair and graceful being must dwell therein, and come out to bathe by night in that clear wave. What meant the fruit, the flowers, the honey, which the slaves left there by night ? Pure food for some pure nymph. The wasp-gods would be forgotten ; probably smoked out as sacrilegious intruders. The lucky seer or poet who struck out the fancy would soon find imitators ; and it would become, after a while, a common and popular superstition that Hamadryads haunted the hollow forest trees, Naiads the wells, and Oreads the lawns. Some- what thus, I presume, did the more cheerful Hellenic myths displace the darker superstitions of the Pelasgi, and those rude Arcadian tribes who offered, even as ix.] ORIGIN OF SORCERY. 223 late as the Eoman Empire, human sacrifices to gods whose original names were forgotten. But even the cultus of nymphs would be defiled after awhile by a darker element. However fair, they might be capricious and revengeful, like other women. Why not ? And soon, men going out into the forest would be missed for awhile. They had eaten narcotic berries, got sun-strokes, wandered till they lost their wits. At all events; their wits were gone. Who had done it ? Who but the nymphs ? The men had seen something they should not have seen ; done something they would not have done; and the nymphs had punished the unconscious rudeness by that frenzy. Fear, everywhere fear, of Nature — the spotted panther, as some one calls her, as fair as cruel, as playful as treacherous. Always fear of Nature, till a Divine light arise, and show men that they are not the puppets of Nature, but her lords ; and that they are to fear God, and fear naught else. And so ends my true myth of the wasp-tree. No, it need not end there ; it may develop into a yet darker and more hideous form of superstition, which Europe has often seen ; which is common now among the Negros ;* which we may hope, will soon be exter- minated. This might happen. For it, or something like it, has happened too many times already. That to the ancient women who still kept up the irrational remnant of the wasp-worship, beneath the sacred tree, other women might resort ; not merely * For an account of Sorcery and Fetishism among the African Negros, see Barton's "Lake Eegions of Central Africa," vol. ii. pp. 341-60. 224 SUPERSTITION. [ix. from curiosity, or an excited imagination, but from jealousy and revenge. Oppressed, as woman has always been under the reign of brute force ; beaten, outraged, deserted, at best married against her will, she has too often gone for comfort and help — and those of the very darkest kind — to the works of darkness ; and there never were wanting — there are not wanting, even now, in remote parts of these isles — wicked old women who would, by help of the old superstitions, do for her what she wished. Soon would follow mysterious deaths of rivals, of husbands, of babes ; then rumours of dark rites connected with the sacred tree, with poison, with the wasp and his sting, with human sacrifices ; lies mingled with truth, more and more confused and frantic, the more they were misinvestigated by men mad with fear : till there would arise one of those witch-manias, which are too common still among the African Negros, which were too common of old among the men of our race. I say, among the men. To comprehend a witch- mania, you must look at it as — what the witch-litera- ture confesses it unblushingly to be — man's dread of Nature excited to its highest form, as dread of woman. She is to the barbarous man — she should be more and more to the civilised man — not only the most beautiful and precious, but the most wonderful and mysterious of all natural objects, if it be only as the author of his physical being. She is to the savage a miracle to be alternately adored and dreaded. He dreads her more delicate nervous organisation, which often takes shapes to him demoniacal and miraculous ; ix.] THE WITCH MANIA. 225 her quicker instincts, her readier wit, which seem to him to have in them somewhat prophetic and super- human, which entangled him as in an invisible net, and rule him against his will. He dreads her very tongue, more crushing than his heaviest club, more keen than his poisoned arrows. He dreads those habits of secrecy and falsehood, the weapons of the weak, to which savage and degraded woman always has recourse. He dreads the very medicinal skill which she has learnt to exercise, as nurse, comforter, and slave. He dreads those secret ceremonies, those mysterious initiations which no man may witness, which he has permitted to her in all ages, in so many — if not all— barbarous and semi-barbarous races, whether Negro, American, Syrian, Greek, or Roman, as a homage to the mysterious importance of her who brings him into the world. If she turns against him — she, with all her unknown powers, she who is the sharer of his deepest secrets, who prepares his very food day by day — what harm can she not, may she not, do ? And that she has good reason to turn against him, he knows too well. What deliverance is there from this mysterious house-fiend, save brute force ? Terror, torture, murder, must be the order of the day. Woman must be crushed, at all price, by the blind fear of the man. I shall say no more. I shall draw a veil, for very pity and shame, over the most important and most significant facts of this, the most hideous of all human follies. I have, I think, given you hints enough to show that it, like all other superstitions, is the child — the last born and the ugliest child — of blind dread of the unknown. sc. Q SCIENCE. Q 2 SCIENCE: I SAID, that Superstition was the child of Fear, and Fear the child of Ignorance ; and you might expect me to say antithetically, that Science was the child of Courage, and Courage the child of Knowledge. /JBut these genealogies — like most metaphors — do not fit exactly, as you may see for yourselves. «-If fear be the child of ignorance, ignorance is also the child of fear ; the two react on, and produce each other. The more men dread Nature, the less they wish to know about her. Why pry into her awful secrets ? It is dangerous ; perhaps impious. She says to them, as in the Egyptian temple of old — "I am Isis, and my veil no mortal yet hath lifted." And why should they try or wish to lift it ? If she will leave them in peace, they will leave her in peace. It is enough that she does not destroy them. So as ignorance bred fear, fear breeds fresh and willing ignorance. And courage? We may say, and truly, that courage is the child of knowledge. But we may say as truly, * A Lecture delivered at the Royal Institution. 230 SCIENCE. [x. that knowledge is the child of courage. '-Those Egyp- tian priests in the temple of Isis would have told you that knowledge was the child of mystery, of special illumination, of reverence, and what not ; hiding under grand words their purpose of keeping the masses ignorant, that they might be their slaves. Reverence ? I will yield to none in reverence for reverence. I will all but agree with the wise man who said that reverence is the root of all virtues. But which child reverences his father most ? - He who comes joyfully and trust- fully to meet him, that he may learn his father's mind, and do his will ; or he who at his father's coming runs away and hides, lest he should be beaten for he knows not what?t There is a scientific reverence, a reverence of courage, which is surely one of the highest forms of reverence. ^-That, namely, which so reveres every fact, that it dare not overlook or falsify it, seem it never so minute ; which feels that because it is a fact it cannot be minute, cannot be unimportant; that it must be a fact of God ; a message from God ; a voice of God, as Bacon has it, revealed in things ; and which therefore, just because it stands in solemn awe of such paltry facts as the Scolopax feather in a snipe's pinion, or the jagged leaves which appear capriciously in certain honeysuckles, believes that there is likely to be some deep and wide secret under- lying them, which is worth years of thought to solve. That is reverence; a reverence which is growing, thank God, more and more common; which will produce, as it grows more common still, fruit which generations yet unborn shall bless. But as for that other reverence, which shuts its eyes and ears in pious awe — what is it but cowardice decked x.] 1EVEKENCE AND COWARDICE. 231 out in state robes, putting on the sacred Urim and Thummim, not that men may ask counsel of the Deity, but that they may not ? What is it but cowardice, very pitiable when unmasked ; and what is its child but ignorance as pitiable, which would be ludicrous were it not so injurious ? If a man comes up to Nature as to a parrot or a monkey, with this prevailing thought in his head — Will it bite me ? — will he not be pretty certain to make up his mind that it may bite him, and had therefore best be left alone ? It is only the man of courage — few and far between — who will stand the chance of a first bite, in the hope of teaching the parrot to talk, or the monkey to fire off a gun. And it is only the man of courage — few and far between — who will stand the chance of a first bite from Nature, which may kill him for aught he knows — for her teeth, though clumsy, are very strong — in order that he may tame her and break her in to his use by the very same method by which that admirable inductive philosopher, Mr. Rarey, used to break in his horses ; first, by not being afraid of them ; and next, by trying to find out what they were thinking of. But after all, as with animals, so with Nature ; cowardice is dangerous. The surest method of getting bitten by an animal is to be afraid of it ; and the surest method of being injured by Nature is to be afraid of it. Only as far as we under- stand Nature are we safe from it ; and those who in any age counsel mankind not to pry into the secrets of the universe, counsel them not to provide for their own life and well-being, or for their children after them. But how few there have been in any age who have not been afraid of Nature. How few have set them- 232 SCIENCE. [r. selves, like Karey, to tame her by finding out what she is thinking of. The mass are glad to have the results of science, as they are to buy Mr. Rarey's horses after they are tamed; but for want of courage or of wit, they had rather leave the taming process to someone else. And therefore we may say that what knowledge of Nature we have — and we have very little — we owe to the courage of those men — and they have been very few — who have been inspired to face Nature boldly ; and say — or, what is better, act as if they were saying — " I find something in me which I do not find in you; which gives me the hope that I can grow to understand you, though you may not understand me ; that I may become your master, and not as now, you mine. And if not, I will know ; or die in the search/' It is to those men, the few and far between, in a very few ages and very few countries, who have thus risen in rebellion against Nature, and looked it in the face with an un quailing glance, that we owe what we call Physical Science. There have been four races — or rather a very few men of each four races — who have faced Nature after this gallant wise. First, the old Jews. I speak of them, be it re- membered, exclusively from an historical, and not a religious point of view. These people, at a very remote epoch, emerged from a country highly civilised, but sunk in the supersti- tions of nature- worship. They invaded and mingled with tribes whose superstitions were even more de- based, silly, and foul than those of the Egyptians from whom they escaped. Their own masses were for cen- turies given up to nature- worship. Now, among those x.] JEWISH SAGES AND NATURE-WOfidg^.. 233 ' - ^ ' '// - Jews arose men — a very few — sages— £prop)iets — 'call/ "/ • , . ill, the men were inspired ne*oj6s,and tliem what you will philosophers — who assumed towards nature an attitude utterly different from the rest of their countrymen and the rest of the then world ; who denounced superstition and the dread of nature as the parent of all manner of vice and misery ; who for themselves said boldly that they discerned in the universe an order, a unity, a per- manence of law, which gave them courage instead of fear. They found delight and not dread in the thought that the universe obeyed a law which could not be broken ; that all things continued to that day accord- ing to a certain ordinance. They took a view of Nature totally new in that age; healthy, human, cheerful, loving, trustful, and yet reverent — identical with that which happily is beginning to prevail in our own day. They defied those very volcanic and meteoric phe- nomena of their land, to which their countrymen were slaying their own children in the clefts of the rocks, and, like Theophrastus's superstitious man, pouring their drink-offerings on the smooth stones of the valley; and declared that, for their part, they would not fear, though the earth was moved, and though the hills were carried into the midst of the sea ; though the waters raged and swelled, and the mountains shook at the tempest. The fact is indisputable. And you must pardon me if I express my belief that these men, if they had felt it their business to found a school of inductive physical science, would, owing to that temper of mind, have achieved a very signal success. I ground that opinion on the remarkable, but equally indisputable fact, that no nation has ever succeeded in perpetuating a- school 234 SCIENCE. [x. of inductive physical science, save those whose minds have been saturated with this same view of Nature, which they have — as an historic fact — slowly but thoroughly learnt from the writings of these Jewish sages. Such is the fact. The founders of inductive phy- sical science were not the Jews ; but first the Chal- daeans, next the Greeks, next their pupils the Romans — or rather a few sages among each race. But what success had they? The Chaldasaii astronomers made a few discoveries concerning the motions of the heavenly bodies, which, rudimentary as they were, still prove them to have been men of rare intellect. For a great and a patient genius must he have been, who first distinguished the planets from the fixed stars, or worked out the earliest astronomical calcula- tion. But they seem to have been crushed, as it were, by their own discoveries. They stopped short. They gave way again to the primeval fear of Nature. They sank into planet-worship. They invented, it would seem, that fantastic pseudo-science of astrology, which lay for ages after as an incubus on the human in- tellect and conscience. They became the magicians and quacks of the old world; and mankind owed them thenceforth nothing but evil. Among the Greeks and Romans, again, those sages who dared face Nature like reasonable men, were accused by the superstitious mob as irreverent impious atheists. The wisest of them all, Socrates, was actually put to death 011 that charge ; and finally, they failed. School after school, in Greece and Rome, struggled to discover, and to get a hearing for, some theory of the universe which was founded on something like experience, reason, common sense. They were not allowed to prosecute x.] SCIENCE OF THE OLD WORLD. 235 their attempt. The mud-ocean of ignorance and fear in which they struggled so manfully was too strong for them ; the mud- waves closed over their heads finally, as the age of the Antonines expired; and the last effort of Graeco-Boman thought to explain the universe was Neoplatonism — the muddiest of the muddy — an attempt to apologise for, and organise into a system, all the nature -dreading superstitions of the Roman world. Porphyry, Plotinus, Proclus, poor Hypatia herself, and all her school — they may have had themselves no Bodily fear of Nature ; for they were noble souls. Yet they spent their time in justifying those who had ; in apologising for the superstitions of the very mob which they despised : just as — it some- times seems to me — some folk in these days are like to end in doing ; begging that the masses might be allowed to believe in anything, however false, lest they should believe in nothing at all : as if believing in lies could do anything but harm to any human being. And so died the science of the old world, in a true second childhood, just where it began. The Jewish sages, I hold, taught that science was ~, probable ; the Greeks and Romans proved that it was possible. It remained for our race, under the teaching of both, to bring science into act and fact. Many causes contributed to give them this power. They were a personally courageous race. This earth has yet seen no braver men than the forefathers of Christian Europe, whether Scandinavian or Teuton, Angle or Frank. They were a practical hard-headed race, with a strong appreciation of facts, and a strong determination to act on them. Their laws, their society, their commerce, their colonisation, their migrations by 236 SCIENCE. [x. land and sea, proved that they were such. They were favoured, moreover, by circumstances, or — as I should rather put it — by that divine Providence which deter- mined their times, and the bounds of their habitation. They came in as the heritors of the decaying civilisa- tion of Greece and Home ; they colonised territories which gave to man special fair play, but no more, in the struggle for existence, the battle with the powers of Nature ; tolerably fertile, tolerably temperate ; with boundless means of water communication ; freer than most parts of the world from those terrible natural phenomena, like the earthquake and the hurricane, before which man lies helpless and astounded, a child beneath the foot of a giant. Nature was to them not so inhospitable as to starve their brains and limbs, as it has done for the Esquimaux or Fuegian ; and not so bountiful as to crush them by its very luxuriance, as it has crushed the savages of the tropics. They saw enough of its strength to respect it; not enough to cower before it : and they and it have fought it out ; and it seems to me, standing either on London Bridge or on a Holland fen-dyke, that they are winning at last. But they had a sore battle : a battle against their , own fear of the unseen. They brought with them, out of the heart of Asia, dark and sad nature-superstitions, some of which linger among our peasantry till this day, of elves, trolls, nixes, and what not. Their Thor and Odin were at first, probably, only the thunder and the wind : but they had to be appeased in the dark marches, of the forest, where hung rotting on the sacred oaks, amid carcases of goat and horse, the carcases of human victims. No one acquainted with the early legends and ballads of our race, but must perceive throughout x.] MYSTERIES AND MAGIC. 237 them all the prevailing tone of fear and sadness. And to their own superstitions they added those of the Rome which they conquered. They dreaded the Roman she-poisoners and witches, who, like Horace's Canidia, still performed horrid rites in graveyards and dark places of the earth. They dreaded as magical the delicate images engraved on old Greek gems. They dreaded the very Roman cities they had destroyed. They were the work of enchanters. Like the ruins of St. Albans here in England, they were all full of devils, guarding the treasures which the Romans had hidden. The Csesars became to them magical man-gods. The poet Virgil became the prince of necromancers. If the secrets of Nature were to be known, they were to be known by unlawful means, by prying into the mysteries of the old heathen magicians, or of the Mohammedan doctors of Cordova and Seville ; and those who dared to do so were respected and feared, and often came to evil ends. It needed moral courage, then, to face and interpret fact. Such brave men as Pope Gerbert, Roger Bacon, Galileo, even Kepler, did not lead happy lives ; some of them found themselves in prison. All the medieval sages — even Albertus Magnus — were stigmatised as magicians. One wonders that more of them did not imitate poor Paracelsus, who, unable to get a hearing for his coarse common sense, took — vain and sensual — to drinking the laudanum which he himself had discovered, and vaunted as a priceless boon to men ; and died as the fool dieth, in spite of all his wisdom. For the "Romani nominis umbra/* the- shadow of the mighty race whom they had conquered, lay heavy on our forefathers for centuries. And their dread of the great heathens was really a 238 SCIENCE. [x. dread of Nature, and of the powers thereof. For when the authority of great names has reigned un- questioned for many centuries, those names become, to the human mind, integral and necessary parts of Nature itself. They are, as it were, absorbed into it ; they become its laws, its canons, its demiurges, and guardian spirits; their words become regarded as actual facts ; in one word, they become a superstition, and are feared as parts of the vast unknown; and to deny what they have said is, in the minds of the many, not merely to fly in the face of reverent wisdom, but to fly in the face of facts. During a great part of the Middle Ages, for instance, it was impossible for an educated man to think of nature itself, without thinking first of what Aristotle had said of her. Aristotle's dicta were Nature ; and when Benedetti, at Venice, opposed in 1585 Aristotle's opinions on violent and natural motion, there were hundreds, perhaps, in the universities of Europe — as there certainly were in the days of the immortal "Epistolas Obscurorum Virorum" — who were ready, in spite of all Benedetti' s professed reverence for Aristotle, to accuse him of outraging not only the father of philosophy, but Nature itself and its palpable and notorious facts. For the restoration of letters in the fifteenth century had not at first mended matters, so strong was the dread of Nature in the minds of the masses. The minds of men had sported forth, not toward any sound investigation of facts, but toward an eclectic resuscitation of Neoplatonism ; which endured, not without a certain beauty and use — as let Spenser's " Faerie Queen " bear witness — till the latter half of the seventeenth century. After that time a rapid change began. It is marked x.] INFLUENCE OF JEWISH LITEEATUBE. 239- by — it has been notably assisted by — the foundation of our own Royal Society. Its causes I will not enter into ; they are so inextricably mixed, I hold, with theological questions, that they cannot be discussed here. I will only point out to you these facts : that, from the latter part of the seventeenth century, the noblest heads and the noblest hearts of Europe con- centrated themselves more and more on the brave and patient investigation of physical facts, as the source of priceless future blessings to mankind; that the eighteenth century which it has been the fashion of late to depreciate, did more for the welfare of mankind, in every conceivable direction, than the whole fifteen centuries before it ; that it did this good work by boldly observing and analysing facts ; that this bold- ness towards facts increased in proportion as Europe became indoctrinated with the Jewish literature ; and that, notably, such men as Kepler, Newton, Berkeley, Spinoza, Leibnitz, Descartes, in whatsoever else they differed, agreed in this, that their attitude towards Nature was derived from the teaching of the Jewish sages. I believe that we are not yet fully aware how much we owe to the Jewish mind, in the gradual eman- cipation of the human intellect. The connection may not, of course, be one of cause and effect ; it may be a mere coincidence. I believe it to be a cause ; one of course of very many causes : but still an integral cause. At least the coincidence is too remarkable a fact not to be worthy of investigation. I said, just now — The emancipation of the human intellect. I did not say — Of science or of the scientific intellect ; and for this reason : That the emancipation of science is the emancipation 240 SCIENCE. [x. of the common mind of all men. All men can partake of the gains of free scientific thought,, not merely by enjoying its physical results, but by becoming more scientific men themselves. Therefore it was, that though I began my first lecture by defining superstition, I did not begin my second by defining its antagonist, science. For the word " science " defines itself. It means simply knowledge ; that is, of course, right knowledge, or such an approxi- mation as can be obtained ; knowledge of any natural object, its classification, its causes, its effects ; or in plain English, what it is, how it came where it is, and what can be done with it. And scientific method, likewise, needs no definition ; for it is simply the exercise of common sense. It is not a peculiar, unique, professional, or mysterious process of the understanding : but the same which all men employ, from the cradle to the grave, in forming correct conclusions. Every one who knows the philosophic writings of Mr. John Stuart Mill, will be familiar with this opinion. But to those who have no leisure to study him, I should recommend the reading of Professor Huxley's third lecture on the origin of species. In that he shows, with great logical skill, as well as with some humour, how the man who, on rising in the morning finds the parlour- window open, the spoons and teapot gone, the mark of a dirty hand on the window-sill, and that of a hob-nailed boot outside, and comes to the conclusion that someone has broken open the window, and stolen the plate, arrives at that hypo- thesis— for it is nothing more — by a long and complex train of inductions and deductions of just the same x.] SCIENCE AND COMMON SENSE. 241 kind as those which, according to the Baconian philo- sophy, are to be used for investigating the deepest secrets of Nature. This is true, even of those sciences which involve long mathematical calculations. In fact, the stating of the problem to be solved is the most important element in the calculation ; and that is so thoroughly a labour of common sense that an utterly uneducated man may, and often does, state an abstruse problem clearly and correctly; seeing what ought to be proved, and perhaps how to prove it, though he may be unable to work the problem out for want of mathematical knowledge. But that mathematical knowledge is not — as all Cambridge men are surely aware — the result of any special gift. It is merely the development of those conceptions of form and number which every human being possesses ; and any person of average intellect can make himself a fair mathematician if he will only pay continuous attention ; in plain English, think enough about the subject. There are sciences, again, which do not involve mathematical calculation; for instance, botany, zoology, geology, which are just now passing from their old stage of classificatory sciences into the rank of organic ones. These are, without doubt, altogether within the scope of the merest common sense. Any man or woman of average intellect, if they will but observe and think for themselves, freely, boldly, patiently, accurately, may judge for themselves of the conclusions of these sciences, may add to these conclusions fresh and important dis- coveries; and if I am asked for a proof of what I assert, I point to "Kain and Rivers," written by no professed so. R 242 SCIENCE. [x. scientific man, but by a colonel in the Guards, known to fame only as one of the most perfect horsemen in the world. Let me illustrate my meaning by an example. A man — I do not say a geologist, but simply a man, squire or ploughman — sees a small valley, say one of the side-glens which open into the larger valleys in the Windsor forest district. He wishes to ascertain its age. He has, at first sight, a very simple measure — that of denudation. He sees that the glen is now being eaten out by a little stream, the product of innumer- able springs which arise along its sides, and which are fed entirely by the rain on the moors above. He finds, on observation, that this stream brings down some ten cubic yards of sand and gravel, on an average, every year. The actual quantity of earth which has been removed to make the glen may be several million cubic yards. Here is an easy sum in arithmetic. At the rate of ten cubic yards a-year, the stream has taken several hundred thousand years to make the glen. You will observe that this result is obtained by mere common sense. He has a right to assume that the stream originally began the glen, because he finds it in the act of enlarging it ; just as much right as he has to assume, if he find a hole in his pocket, and his last coin in the act of falling through it, that the rest of his money has fallen through the same hole. It is a sufficient cause, and the simplest. A number of observations as to the present rate of denudation, and a sum which any railroad contractor can do in his head, to determine the solid contents of the valley, are all x.] DREAD OF SIZE. 243 that are needed. The method is that of science : but it is also that of simple common sense. You will re- member, therefore, that this is no mere theory or hypothesis, but a pretty fair and simple conclusion from palpable facts ; that the probability lies with the belief that the glen is some hundreds of thousands of years old ; that it is not the observer's business to prove it further, but other persons' to disprove it, if they can. But does the matter end here ? No. And, for certain reasons, it is good that it should not end here. The observer, if he be a cautious man, begins to see if he can disprove his own conclusions ; moreover, being human, he is probably somewhat awed, if not appalled, by his own conclusion. Hundreds of thousands of years spent in making that little glen ! Common sense would say that the longer it took to make, the less wonder there was in its being made at last : but the instinctive human feeling is the opposite. There is in men, and there remains in them, even after they are civilised, and all other forms of the dread of Nature have died out in them, a dread of size, of vast space, of vast time ; that latter, mind, being always imagined as space, as we confess when we speak instinctively of a space of time. They will not understand that size is merely a relative, not an absolute term; that if we were a thousand times larger than we are, the universe would be a thousand times smaller than it is ; that if we could think a thousand times faster than we do, time would be a thousand times longer than it is ; that there is One in whom we live, and move, and have our being, to whom one day is as a thousand years, and a thousand E 2 244 SCIENCE. [x, years as one day. I believe this dread of size to be merely, like all other superstitions, a result of bodily fear; a development of the instinct which makes .a little dog run away from a big dog. Be that as it may, every observer has it; and so the man's conclusion seems to him strange, doubtful : he will reconsider it. Moreover, if he be an experienced man, he is well aware that first guesses, first hypotheses, are not always the right ones; and if he be a modest man, he will consider the fact that many thousands of thoughtful men in all ages, and many thousands still, would say, that the glen can only be a few thousand, or possibly a few hundred, years old. And he will feel bound to consider their opinion ; as far as it is, like his own, drawn from facts, but no further. So he casts about for all other methods by which the glen may have been produced, to see if any one of them will account for it in a shorter time. 1. Was it made by an earthquake ? No; fof the strata on both sides are identical, at the same level, and in the same plane. 2. Or by a mighty current ? Jf so, the flood must have run in at the upper end, before it ran out at the lower. But nothing has run in at the upper end. All round above are the undisturbed gravel-beds of the horizontal moor, without channel or depression. 3. Or by water draining off a vast flat as it was upheaved out of the sea ? That is a likely guess. The valley at its upper end spreads out like the fingers of a hand, as the gullies in tide-muds do. But that hypothesis will not stand. There is no vast unbroken flat behind the glen. Eight and left of x.] THEOEY OF DENUDATION. 245 it are other similar glens, parted from it by long narrow ridges : these also must be explained on the same hypothesis ; but they cannot. For there could not have been surf ace- drainage to make them all, or a tenth of them. There are no other possible hypotheses ; and so he must fall back on the original theory — the rain, the springs, the brook ; they have done it all, even as they are doing it this day. But is not that still a hasty assumption ? May not their "denuding power have been far greater in old times than now ? Why should it ? Because there was more rain then than now ? That he must put out of court ; there is no evidence of it whatsoever. Because the land was more friable originally ? Well, there is a great deal to be said for that. The experience of every countryman tells him that bare or fallow land is more easily washed away than land under vegetation. And no doubt, when these gravels and sands rose from the sea, they were barren for hundreds of years. He has some measure of the time required, because he can tell roughly how long it takes for sands and shingles left by the sea to become covered with vegetation. But he must allow that the friability of the land must have been originally much greater than now, for hundreds of years. But again, does that fact really cut off any great space of time from his hundreds of thousands of years? For when the land first rose from the sea, that glen was not there. Some slight bay or bend in the shore •determined its site. That stream was not there. It was split up into a million little springs, oozing side by side from the shore, and having each a very minute 246 SCIENCE. [x, denuding power, which kept continually increasing by combination as the glen ate its way inwards, and the rainfall drained by all these little springs was collected into the one central stream. So that when the ground being bare was most liable to be denuded, the water was least able to do it ; and as the denuding power of the water increased, the land, being covered with vege- tation, became more and more able to resist it. AIL this he has seen, going on at the present day in the similar gullies worn in the soft strata of the South Hampshire coast ; especially round Bournemouth. So the two disturbing elements in the calculation may be fairly set off against each other, as making a difference of only a few thousands or tens of thousands of years either way; and the age of the glen may fairly be, if not a million years, yet such a length of years as mankind still speak of with bated breath, as if forsooth it would do them some harm. I trust that every scientific man in this room will agree with me, that the imaginary squire or plough- man would have been conducting his investigation strictly according to the laws of the Baconian philo- sophy. You will remark, meanwhile, that he has not used a single scientific term, or referred to a single scientific investigation ; and has observed nothing and thought nothing, which might not have been observed and thought by any one who chose to use his common sense, and not to be afraid. But because he has come round, after all this further investigation, to something very like his first conclusion, was all that further investigation useless ? No — a thou- sand times, no. It is this very verification of hypotheses which makes the sound ones safe, and destroys the x.] SCIENCE OPEN TO ALL. 247 unsound. It is this struggle with all sorts of super- stitions which makes science strong and sure, and her march irresistible, winning ground slowly, but never receding from it. It is this buffeting of adversity which compels her not to rest dangerously upon the shallow sand of first guesses, and single observations ; but to strike her roots down, deep, wide, and interlaced, into the solid ground of actual facts. It is very necessary to insist on this point. For there have been men in all past ages — I do not say whether there are any such now, but I am inclined to think that there will be hereafter — men who have tried to represent scientific method as something difficult, mysterious, peculiar, unique, not to be attained by the unscientific mass ; and this not for the purpose of exalting science, but rather of discrediting her. For as long as the masses, educated or uneducated, are ignorant of what scientific method is, they will look on scientific men, as the middle age looked on necro- mancers, as a privileged, but awful and uncanny caste, possessed of mighty secrets ; who may do them great good, but may also do them great harm. Which belief on the part of the masses will enable these persons to instal themselves as the critics of science, though not scientific men themselves : and — as Shakespeare has it — to talk of Kobin Hood, though they never shot in his bow. Thus they become mediators to the masses between the scientific and the unscientific worlds. They tell them — You are not to trust the conclusions of men of science at first hand. You are not fit judges of their facts or of their methods. It is we who will, by a cautious eclecticism, choose out for you such of their conclusions as are safe for you ; 248 SCIENCE. [x. and them we will advise you to believe. To the scientific man, on the other hand, as often as anything is discovered unpleasing to them, they will say, imperiously and e cathedra — Your new theory contra- dicts the established facts of science. For they will know well that whatever the men of science think of their assertion, the masses will believe it ; totally un- aware that the speakers are by their very terms show- ing their ignorance of science ; and that what they call established facts scientific men call merely provisional conclusions, which they would throw away to-inorrow without a pang were the known facts explained better by a fresh theory, or did fresh facts require one. This has happened too often. It is in the interest of superstition that it should happen again; and the best way to prevent it surely is to tell the masses — Scientific method is no peculiar mystery, requiring a peculiar initiation. It is simply common sense, com- bined with uncommon courage, which includes uncom- mon honesty and uncommon patience ; and if you will be brave, honest, patient, and rational, you will need no mystagogues to tell you what in science to believe and whatnot to believe ; for you will be just as good judges of scientific facts and theories as those who assume the right of guiding your convictions. You are men and women : and more than that you need not be. And let me say that the man of our days whose writings exemplify most thoroughly what I am going to say is the justly revered Mr. Thomas Carlyle. As far as I know he has never written on any scien- tific subject. For aught I am aware of, he may know nothing of mathematics or chemistry, of comparative anatomy or geology. For aught I am aware of, he •'/** x.] . WRITINGS OF THOMAS CARLYLE. 4 ^ J. 24^ may know a great deal about them all, and, lil^e a wise man, hold his tongue, and give the world merely the results in the form of general thought. But this I know ; that his writings are instinct with the very / spirit of science ; that he has taught men, more than \_any living man, the meaning and end of science ; that he has taught men moral and intellectual courage ; to face facts boldly, while they confess the divineness of facts ; not to be afraid of Nature, and not to worship Nature ; to believe that man can know truth ; and that only in as far as he knows truth can he live worthily on this earth. And thus he has vindicated, as no other man in our days has done, at once the dignity of Nature -and the dignity of spirit. That he would have made a distinguished scientific man, we may be as certain from his writings as we may be certain, when we see a fine old horse of a certain stamp, that he would have made a first-class hunter, though he has been unfortunately all his life in harness. Therefore, did I try to train a young man of science to be true, devout, and earnest, accurate and daring, I should say — Read what you •will : but at least read Carlyle. It is a small matter •to me — and I doubt not to him — whether you will . agree with his special conclusions : but his premises and his method are irrefragable ; for they stand on the "voluntatem Dei in rebus revelatam" — on fact and common sense. And Mr. Carlyle's writings, if I am correct in my estimate of them, will afford a very sufficient answer to those who think that the scientific habit of mind tends to irreverence. Doubtless this accusation will always be brought against science by those who confound reverence with 250 SCIENCE. [x, fear. For from blind fear of the unknown, science does certainly deliver man. She does by man as he does by an unbroken colt. The colt sees by the road side some quite new object — a cast-away boot, an old kettle, or what not. What a fearful monster! What unknown terrific powers may it not possess ! And the colt shies across the road, runs up the bank, rears on end ; putting itself thereby, as many a man does, in real danger. What cure is there ? But one ; experience. So science takes us, as we should take the colt, gently by the halter ; and makes us simply smell at the new monster ; till after a few trembling sniffs, we discover, like the colt, that it is not a monster, but a kettle. Yet I think, if we sum up the loss and gain, we shall find the colt's character has gained, rather than lost, by being thus disabused. He learns to substitute a very rational reverence for the man who is breaking him in, for a totally irrational reverence for the kettle; and becomes thereby a much wiser and more useful member of society, as does the man when disabused of his superstitions. From which follows one result. That if science proposes — as she does — to make men brave, wise, and independent, she must needs excite unpleasant feelings in all who desire to keep men cowardly, ignorant, and slavish. And that too many such persons have existed in all ages is but too notorious. There have been from all time, goetai, quacks, powwow men, rain-makers, and necromancers of various sorts, who having for their own purposes set forth partial, ill-grounded, fantastic, and frightful interpretations of nature, have no love for those who search after a true, exact, brave, and hopeful one. And therefore it is to be feared, or hoped, x.] FEAR OF SCIENCE. 251 that science and superstition will to the world's end remain irreconcilable and internecine foes. Conceive the feelings of an old Lapland witch, who has had for the last fifty years all the winds in a seal- skin bag, and has been selling fair breezes to northern skippers at so much a puff, asserting her powers so often, poor old soul, that she has got to half believe them herself — conceive, I say, her feelings at seeing her customers watch the Admiralty storm-signals, and con the weather reports in The Times. Conceive the feelings of Sir Samuel Baker's African friend, Katchiba, the rain-making chief, who possessed a whole houseful of thunder and lightning — though he did not, he con- fessed, keep it in a bottle as they do in England — if Sir Samuel had had the means, and the will, of giving to Katchiba's Negros a course of lectures on electricity, with appropriate experiments, and a real bottle full of real lightning among the foremost. It is clear that only two methods of self-defence would have been open to the rain-maker : namely, either to kill Sir Samuel, or to buy his real secret of bottling the lightning, that he might use it for his own ends. The former method — that of killingthe man of science — was found more easy in ancient times ; the latter in these modern ones. And there have been always those who, too good-natured to kill the scientific man, have patronised knowledge, not for its own sake, but for the use which may be made of it ; who would like to keep a tame man of science, as they would a tame poet, or a tame parrot ; who say — Let us have science by all means, but not too much of it. It is a dangerous thing; to be doled out to the world, like medicine, in small and cautious doses. You, the scientific i 252 SCIENCE. [x. will of course freely discover what you choose. Only do not talk too loudly about it : leave that to us. We understand the world, and are meant to guide and govern it. So discover freely : and meanwhile hand over your discoveries to us, that we may instruct and edify the populace with so much of them as we think safe, while we keep our position thereby, and in many cases make much money by your science. Do that, and we will patronise you, applaud you, ask you to our houses ; and you shall be clothed in purple and fine linen, and fare sumptuously with us every day. I know not whether these latter are not the worst enemies which science has. They are often such excellent, respectable, orderly, well-meaning persons. They desire so sincerely that everyone should be wise : only not too wise. They are so utterly unaware of the mischief they are doing. They would recoil with horror if they were told they were so many Iscariots, betraying Truth with a kiss. But science, as yet, has withstood both terrors and blandishments. In old times she endured being im- prisoned and slain. She came to life again. Perhaps it was the will of Him in whom all things live, that she should live. Perhaps it was His spirit which gave her life. She can endure, too, being starved. Her votaries have not as yet cared much for purple and fine linen, and sumptuous fare. There are a very few among them who, joining brilliant talents to solid learning, have risen to deserved popularity, to titles, and to wealth. But even their labours, it seems to me, are never rewarded in any proportion to the time and the intellect spent on thena, nor to the benefits which they x.] SOLDIEKS OF SCIENCE. 253 bring to mankind ; while the great majority, unpaid and unknown, toil on, and have to find in science her own reward. Better, perhaps, that it should be so. Better for science that she should be free, in holy poverty, to go where she will and say what she knows, than that she should be hired out at so much a year to say things pleasing to the many, and to those who guide the many. And so, I verily believe, the majority of scientific men think. There are those among them who have obeyed very faithfully St. Paul's precept : 1 ' No man that warreth entangleth himself with the affairs of this life." For they have discovered that they are engaged in a war — a veritable war — against the rulers of darkness, against ignorance and its twin children, fear and cruelty. Of that war they see neither the end nor even the plan. But they are ready to go on; ready, with Socrates, " to follow reason whithersoever it leads ; " and content, meanwhile, like good soldiers in a campaign, if they can keep tolerably in a line, and use their weapons, and see a few yards ahead of them through the smoke and the woods. They will come out somewhere at last ; they know not where nor when : but they will come out at last, inta the daylight and the open field; and be told then — perhaps to their own astonishment — as many a gallant soldier has been told, that by simply walking straight on, and doing the duty which lay nearest them, they have helped to win a great battle, and slay great giants, earning the thanks of their country and of mankind. And, meanwhile, if they get their shilling a- day of fighting-pay, they are content. I had almost said, they ought to be content. For science is, I verily believe. ^54 SCIENCE. [x. like virtue, its own exceeding great reward. I can conceive few human states more enviable than that of the man to whom, panting in the foul laboratory, or watching for his life under the tropic forest, Isis shall for a moment lift her sacred veil, and show him, once and for ever, the thing he dreamed not of ; some law, or even mere hint of a law, explaining one fact ; but explaining with it a thousand more, connecting them all with each other and with the mighty whole, till order and meaning shoots through some old Chaos of scattered observations. Is not that a joy, a prize, which wealth cannot give, nor poverty take away ? What it may lead to, he knows not. Of what use it may become, he knows not. But this he knows, that somewhere it must lead; of some use it will be. For it is a truth; and having found a truth, he has exorcised one more of the ghosts which haunt humanity. He has left one object less for man to fear; one object more for man to use. Yes, the scientific man may have this comfort, that whatever he has done, he has done good ; that he is following a mistress who has never yet conferred aught but benefits on the human race. What physical science may do hereafter I know not; but as yet she has done this : She has enormously increased the wealth of the human race; and has therefore given employment, food, existence, to millions who, without science, would either have starved or have never been born. She has shown that the dictum of the early political economists, that population has a tendency to increase faster than the means of subsistence, is no law of humanity, but merely a tendency of the barbaric and x.] VICTORIES OF SCIENCE. 255 ignorant man, which can be counteracted by increasing manifold by scientific means his powers of producing food. She has taught men, during the last few years, to foresee and elude the most destructive storms ; and there is no reason for doubting, and many reasons for hoping, that she will gradually teach men to elude other terrific forces of nature, too powerful and too seemingly capricious for them to conquer. She has discovered innumerable remedies and alleviations for pains and disease. She has thrown such light on the causes of epidemics, that we are able to say now that the presence of cholera — and probably .of all zymotic diseases — in any place, is usually a sin and a shame, for which the owners and authorities of that place ought to be punishable by law, as destroyers of their fellow-men; while for the weak, for those who, in the barbarous and semi-barbarous state — and out of that last we are only just emerging — how much has she done ; an earnest of much more which she will do ? She has delivered the insane — I may say by the scientific insight of one man, more worthy of titles and pensions than nine-tenths of those who earn them — I mean the great and good Pinel — from hopeless misery and torture into com- parative peace and comfort, and at least the possibility of cure. For children, she has done much, or rather might do, would parents read and perpend such books as Andrew Combe's and those of other writers on physical education. We should not then see the children, even of the rich, done to death piecemeal by improper food, improper clothes, neglect of ventilation and the commonest measures for preserving health. We should not see their intellects stunted by Pro- crustean attempts to teach them all the same accom- 256 SCIENCE. [x, plishments, to the neglect, most often, of any sound practical training of their faculties. We should not see slight indigestion, or temporary rushes of blood to the head, condemned and punished as sins against Him who took up little children in His arms and blessed them. But we may have hope. When we compare edu- cation now with what it was even forty years ago,, much more with the stupid brutality of the monastic system, we may hail for children, as well as for grown people, the advent of the reign of common sense. And for woman — What might I not say on that point ? But most of it would be fitly discussed only among physicians and biologists : here I will say only this : Science has exterminated, at least among civilised nations, witch-manias. Women — at least white women — are no longer tortured or burnt alive from man's blind fear of the unknown. If science had done no more than that, she would deserve the perpetual thanks and the perpetual trust, not only of the women whom she has preserved from agony, but the men whom she has preserved from crime. These benefits have already accrued to civilised men, because they have lately allowed a very few of their number peaceably to imitate Mr. Earey, and find out what nature — or rather, to speak at once reverently and accurately, He who made nature — is thinking of; and obey the " voluntatem Dei in rebus revelatam." This science has done, while yet in her infancy. What she will do in her maturity, who dare predict ? At least, in the face of such facts as these, those who bid us fear, or restrain, or mutilate science, bid us commit an act of folly, as well as of ingratitude, which can x.] - ; BLESSINGS OF SCIENCE. 257 only harm ourselves. For science has as yet done nothing but good. Will any one tell me what harm it has ever done ? When any one will show me a single result of science, of the knowledge of and use of physical facts, which has not tended directly to the benefit of mankind, moral and spiritual, as well as physical and economic — then I shall be tempted to believe that Solomon was wrong when he said that the one thing to be sought after on earth, more precious than all treasure, she who has length of days in her right hand, and in her left hand riches and honour, whose ways are ways of pleasantness and all her paths are peace, who is a tree of life to all who lay hold on her, and makes happy every one who retains her, is — as you will see if you will yourselves consult the passage — that very Wisdom — by which God has founded the earth ; and that very Understanding — by which He has established the heavens. sc. THOUGHTS IN A GEAVEL-PIT. 3 2 THOUGHTS IN A GRAVEL-PIT. LADIES AND GENTLEMEN, we may of course think of anything which we choose in a gravel-pit, as we may anywhere else. Thought is free : at least so we fancy. But the most right sort of thought, after all, is thought about what lies nearest us ; not always, but surely once in a way, that we may understand some- thing of everyday objects. And therefore it may be well worth our while to go once into a gravel-pit, and think about it, till we have learnt what a gravel- pit is. Learnt what a gravel-pit is ? Everybody knows. If it be so, everybody knows more than I know. We all know a gravel-pit when we see one; but we do not all know what we see. I do not know. I know a little ; a few scraps of fact about these pits round here, though about no others. Were I to go into a pit a hundred miles, even fifty miles off, I could tell you nothing certain about it ; perhaps might make a dozen mistakes. But what I know, with tolerable * A Lecture delivered at the Mechanics' Institute, Odiham, 1857. 262 THOUGHTS IN A GEAVEL-PIT. [xi. certainty,, about the pits round here, I wish to tell you to-night. But why ? You do not need, one in ten of you, to know anything about gravel, unless you be highway surveyor, or have a garden-walk to make ; and then someone will easily tell you where the best gravel is to be got, at so much a load. Very true ; but you come here to-night to instruct yourselves ; that is, to learn, if you can, something more about the world you live in ; something more about God who made the world. And you come here to educate yourselves ; to ednce and bring out your own powers of perceiving, judging, reasoning ; to improve yourselves in the art of all arts, which is, the art of learning. That is mental education. Now if a gravel-pit will teach you a little about these things, you will surely call it a rich gravel-pit. If it helps you to wisdom, which is worth more than gold ; which is the only way to get gold wisely, and spend it wisely ; then we will call our pit no more a gravel-pit, but a wisdom-pit, a mine of wisdom. Let us go out, then, in fancy (for it is too cold to go out in person) to Hook Common, scramble down into the first gravel-pit we come to, and see what we can see. The first thing we see is a quantity of stones, more or less rounded, lying in gravel and poor clay. Well — what do those stones tell us ? These stones, as I told you when I addressed you last, are ancient and venerable worthies. They have seen a great deal in their time. They have had a great deal of knocking about, and have stood it xi J THEEE WORLDS. 263 manfully. They have stood the knocking about of three worlds already ; and have done their duty there- in ; and they are ready (if you choose to mend the road with them) to stand the knocking about of this fourth world, and being most excellent gravel, to do their duty in this world likewise; which is more, I fear, than either you or I can say for ourselves. Three worlds ? Yes. Standing there in the gravel-pit, I see three old worlds, in each of which these stones played their part ; and this world of man for the fourth, and the best of all — for man if not for the stones. I speak sober truth. Let me explain it step by step. You know the chalk-hills to the south; and the sands of Crooksbury and the Hind Head beyond them. There is one world. You know the clays and sands of Hook and Newnham, Dogmersfield and Shapley Heath, and all the country to the north as far as Beading. There is a second world. You know the gravel-pit itself ; and all the upper soils and gravels, which are spread over the length and breadth of the country to the north. There is a third world. Let us take them one by one. First, the chalk. The chalk-hills rise much higher than the surround- ing country ; but you must not therefore suppose that they were made after it, and laid on the top of it. That guess would be true, if you went south-east from here toward the Hind Head. The chalk lies on the top of the sands of Crooksbury Hill, and the clays of Holt Forest ; but it dips underneath the sands of Shapley 264 THOUGHTS IN A GRAYEL-PIT. [xi. Heath, and the clays of Dogmersfield, and reappears from underneath them again at Reading. Thus you at Odiham stand on the edge of a chalk basin ; of what was once a sea, or estuary, with shores of chalk, which begins at the foot of the High Clere Hills, and runs eastward, widening as it goes, past London, into the Eastern Sea. Everywhere under this great basin is the floor of chalk, covered with clays and sands, which, for certain reasons, are called by geologists Tertiary strata. But what has this to do with a gravel-pit ? This first. That all the flints in this pit have come out of the chalk. They are coloured, most of them, with iron, which has turned them brown ; but they are exactly the same flints as those gray ones in the chalk-pit on the other side of the town. How do I know that ? I think our own eyes will prove it : they are the same shapes, and of the same substance ; but as a still surer proof, we find exactly the same fossils in them ; sponges, choanites (which were something like our modern sea- anemones), corals, and "shepherds7 crowns" as the boys call the fossil sea-urchins. The species of all these, and of other fossils, in the chalk-pit and in the gravel-pit, are absolutely identical. The natural conclusion is, then, that the gravel has been formed from the washings of the chalk. The white lime of the chalk has been carried away in water by some flood or floods ; the heavier flints have been left behind. Stop now one moment, and think. You all know how very few flints there are in the chalk-pit, in pro- portion to the mass of chalk. You all know what vast f- t XL] THE WOELD OF CHALK. 4'/ 265 / f , gravel-beds cover tlie country to the north, and 6ften to the thickness of many feet. Try and conceive, then, what a much more vast mass of chalk must have been washed away, to leave that vast mass of gravel behind it. — Conceive? It is past conception. I will but give you two hints as to its probable size. The chalk to the eastward, between here and Farn- ham, is a far narrower and shallower band than any- where else in England. Its narrowest point is, I believe, beneath the bishop's palace at Farnham, where it may be a hundred feet thick, instead of several hundred, as it usually is in other parts of England. The cause of this is, that the whole of the upper chalk has been washed away, to form' the gravel-beds to the north and east of us. Again. Some of you may have been on the Hind Head or on Leith Hill, and have looked southward over the glorious prospect of the rich Weald, spread out five hundred feet below — a sight to make an Englishman proud of his native land. Now, the mass of chalk which has been carried away began behind you, at the Hogsback, and the line of chalk-hills which runs to Boxhill, and stretched hundreds of feet above your head as you stand on Hind Head or Leith Hill, right over the old Weald of Sussex to the chalk of the South Downs. And out of the scourings of that vast mass of chalk was our gravel-pit made. Of that, and also of the Hind Head sands below it. For you will find a great deal of sharp sand in our gravel-pits, which has not, I believe, come from the grinding of chalk flints ; for if it had been ground, it would not be the sharp sand it is ; the particles would be rounded off at the edges. This is probably' sand 266 THOUGHTS IN A GBAVEL-PIT. [xi. from the Hind Head ; from what geologists term the greensands, below the chalk. And I have a better proof of this — at least I should have in every gravel-pit at Eversley — in a few pieces of a stone which is not chalk-flint at all ; flattish and oblong, not more than two or three inches in diameter ; of a grayish colour, and a porous worm-eaten surface, which no chalk-flint ever has. They are chert, which abound in the greensand formation ; and insignificant as they look, are a great token of a most important fact ; that the currents which formed our sands and gravels set from the south during a long series of ages, first till they had washed away all the chalk off the Weald, and next till they had washed away a great part of the sands, which then became exposed, the remains whereof form great commons over a wide tract of Surrey. Now let me pause, and ask you to observe one thing. How, in inductive science, we arrive, by patient and simple observation of the things around us, at the most grand and surprising results. Of course I am not giving you the whole of the facts which have made this argument certain. I am only giving you enough to make it probable to you. Its certainty has been proved by many different men, labouring in many dif- ferent parts of England, and of the Continent also, and then comparing their discoveries together ; often, of course, making mistakes ; but each working on patiently, and correcting their early mistakes by fresh facts, till they have at last got hold of the true key to the mystery, and are as certain of the existence of the great island of the Weald, and its gradual destruction by the waves and currents of an ancient sea, as if they XL] HOW CHALK WAS MADE. 267 had seen it with their bodily eyes. You must take all this, of course, as truth from me to-night; but you may go and examine for yourselves ; and see how far your own common sense and observations agree with those of learned geologists. The history of this great Wealden island to the south-east of us is obscure enough; but a few general facts, which bear upon our gravel-pit, I can give you. I must begin, however, ages before the Wealden island existed ; when the chalk of which its mass was composed was at the bottom of a deep ocean. We know now what chalk is, and how it was made. We know that it was deposited as white lime mud, at a vast sea- depth, seemingly undisturbed by winds or currents. We know that not only the flint, but the chalk itself, is made up of shells ; the shell of little microscopic animalcules smaller than a needle's point, in millions of millions, some whole, some broken, some in powder, which lived, and died, and decayed for ages in the great chalk sea. We know this, I say. We had suspected it long ago, and become more and more certain of it as the years went on. But now we seem to have a proof of it which is past gainsaying. In the late survey of the bottom of the Atlantic Ocean, with a view to laying down the electric tele- graph between England and America, by Lieutenant Maury of the American navy, a great discovery was made. It was found that the floor of the Atlantic Ocean, after you have left the land a few hundred miles, is one vast plain of mud, of some thirteen hundred miles in breadth. But here is the wonder; 268 THOUGHTS IN A GRAVEL-PIT. [xi. it was found that at a depth averaging 1,600 fathoms — 9,600 feet — in utter darkness, the sea floor is covered with countless millions of animalcule- shells, of the same families, though not of the same species, as those which compose the chalk. At the bottom of a still ocean, then, the chalk was deposited. But it took many an age to raise it to where Odiham chalk-pit now stands. But how was it raised ? By the upheaving force of earthquakes. Or rather, by the upheaving force which causes earthquakes, when it acts in a single shock, cracking the earth's crust by an explosion ; but which acts, too, slowly and quietly, uplifting day by day, and year by year, some portions of the earth/s surface, and letting others sink down ; as in the case of the valley of the Jordan and the Dead Sea, which is now 1,300 feet below the level of the Mediterranean. That these upheaving forces were much more violent than now, in the earlier epochs of our planet, we have some reason to believe : but the subject is too long a one to enter on now ; and all I can say is, that you must conceive for yourself the chalk gradually brought up to the surface, worn away along a shifting shore- line by the waves of the sea, and covered in shallow water by the clays and sands on which Odiham stands ; and which compose the earliest part of our second world. A second world ; a new world. We can use no weaker expression. When we compare the chalk with the strata which lie upon it, we can only call them a complete new creation. For not only were they deposited in shallow water ; XL] SEA-ACTION ON CHALK. 269" a great deal of them, probably, near river-mouths, and by the force of violent currents, as. the irregularity of their lower bed proves : but there is hardly a plant or animal found in the chalk itself, which is found in the gravels, sands, or clays above it. The shells are all new species ; unseen before in this planet. The vege- tables, as far as we know them, are all different from anything found in the chalk, or in the beds below it. God Almighty, for His own good pleasure, has made all things new. It is a very awful fact; but it is a very certain one. Several times, in the history of our planet, has the Lord God fulfilled the words of the Psalmist : " Thou takest away their breath, they die, and return again to their dust. " Thou sendest forth thy breath, they are made : and thou renewest the face of the earth. " But in no instance, perhaps, is the gulf so vast ; is the leap from one world to another so sheer, as that between the chalk and the London clay above it. But how do I know that there was a shore-line here ? And how do I know that the chalk was covered with sand-beds ? I know that there was a shore-line here, from this fact. If you will look at the surface of the chalk, where the sands and clays lie on it, you will find that it is not smooth ; that the beds do not rest conform- ably on each other, as if they had been laid down quietly by successive tides, while the chalk below was still soft mud. So far from it, the chalk must have become hard rock, and have been exposed to the action of the sea waves, for centuries, perhaps, before the sands began to cover it. For you find the surfa'ce of 270 THOUGHTS IN A GRAVEL-PIT. [xi, the chalk furrowed, worn into deep pits, which are often filled with sand, and gravel, and rounded lumps of chalk. You may see this for yourselves, in the topmost layer of any chalk -pit round here. You may see, even, in some places, the holes which boring shells, such as work now close to the tide-level, have made in it ; all the signs, in fact, of the chalk having been a rocky sea-beach for ages. The first bed which you will generally find upon the water- worn surface of the chalk is a layer of green- sand and green-coated flints. Among these are met with in many places beds of a great oyster, now un- known in life. I cannot say whether there are any here; but at Reading, to the east of Farnham, at Croydon, and under London, they are abundant. There must have been miles and miles of oyster-bed at the bottom of that Eocene sea ; among the oyster-beds, beds of a peculiar pebble, which we shall see in our gravel-pit. They are flints ; but very small, dark, often almost black, and quite round and polished. Compare them with the average flints of the pit, and you see that while the average flints are fresh from the chalk, these have plainly been rolled and rounded for years. They are (except in their dark colour) exactly such shingle as forms the south- coast beach about Hastings and Brighton. They are the shingle beaches of the Eocene sea, part of which are preserved under the London clay. To the north a vast bed of them remains in its original place, on Blackheath near London ; while part, in the district to the south, which the London clay has not covered, have been washed away, and carried into our xi.] SUGAE SANDSTONES. 271 gravel-pit> to mingle with, other flints fresh from the chalk. I said just now that I had proof that a great tract of the chalk-hills which are now bare, was once covered with sand and gravel. Here, in the presence of these dark pebbles, is a proof. But I have another, and a yet more curious one. For our gravel-pit, if it be, will possibly yield us another, and a more curious object. You most of you have seen, I dare say, large stones, several feet long, taken out of these pits. In the gravels and sands at Pirbright they are so plentiful that they are quarried for building- stone. And good building-stone they make; being exceedingly hard, so that no weather will wear them away. They are what is called saccha- rine (that is, sugary) sandstone. If you chip off a bit, you find it exactly like fine whity-brown sugar, only intensely hard. Now these stones have become very famous ; for two reasons. First, the old Druids used them to build their temples. Second, it is a most puzzling question where they came from. First. They were used to build Druid temples. If you go to the further lodge of Dogmersfield Park, which opens close to the Barley-mow Inn, you will see there several of them, about five feet high each, set up on end. They run in a line through the plantation past the lodge, along the park palings ; one or two are in an adjoining field. They are the remains of a double line ; an avenue of stones, which has formed part of an ancient British temple. I know no more than that : of that I am certain. But if you go to the Chalk Downs of Wiltshire, 272 THOUGHTS IN A GRAVEL-PIT. [XT, you see these temples in their true grandeur. You have all heard of Stonehenge on Salisbury Plain. Some of you may have heard of the great Druid temple at Abury in Wilts, which, were it not all but destroyed, would be even grander than Stonehenge. These are made of this same sugar- sandstone. But where did the sandstone come from ? You may say, it " grew " of itself in our sands and gravels ; but it certainly did not " grow " on the top of a bare chalk down. The Druids must have brought the stones thither, then, from neighbouring gravel-pits. They brought them, no doubt : but not from gravel-pits. The stones are found loose on the downs on the top of the bare chalk, in places where they plainly have not been put by man. For instance, near Marlborough is a long valley in the chalk, which, for perhaps half a mile, is full of huge blocks of this sandstone, lying about on the turf. The " gray wethers " the shepherds call them. One look at them would show you that no man's hand had put them there. They look like a river of stone, if L may so speak; as if some mighty flood had rolled them along down the valley, and there left them behind as it sunk. Now, whence did they come ? Many answers have been given to that question. It was supposed by many learned men that they had been brought from the sandstone mountains of Wales, like the rolled pebbles of which I spoke just now. But the answer to that was, that these great stones are not rolled : they are all squarish, more or less ; their edges are often sharp and fresh, instead of being polished almost into balls, as they would have been in xi.] ICE ACTION. 273 rolling two hundred miles along a sea-bottom, before such a tremendous current as would have been needed to carry them. Then rose a very clever guess. They must have been carried by icebergs, as much silt and stones (we know) has been carried, and have dropped, like them, to the bottom, when the icebergs melted. There is great reason in that ; but we have cause now to be certain that they did not come from Wales. That they are not pieces of a rock older than the chalk, but much younger; that they were very probably formed close to where they now lie. Now — how do we know that ? If you are not tired with all this close reasoning, I will tell you. — If you are, say so : but as I said at first, I want to show you what steady and sharp head- work this same geology requires, even in the nearest gravel-pit. Well, then. I do not think our gravel-pit will tell us what we want : but I know one which will. You have all heard of Lady Grenville's lovely place, Dropmore, beyond Maidenhead ; where the taste of that good and great man, the late Lord Grenville, con- verted into a paradise of landscape-gardening art a barren common, full of clay and gravel-pits. Lord Grenville wanted stones for rockwork; in those pits he found some blocks, of the same substance as those of Stonehenge or Pirbright. And they contain the answer. The upper surface of most of them is the usual clear sugar- sandstone : but the under surface of many has round pebbles imbedded in it, looking just like plums in a pudding ; the smaller above and the larger below, as if they had sunk slowly through so. T 274 THOUGHTS IN LA GEAVEL-PIT. [xi. the fluid sand, before the whole mass froze, as it were, suddenly together. And these pebbles are nothing else than rolled chalk flints. That settles the matter. The pebbles could not come from Wales; there are no flints there. They could not have been made before the chalk ; for out of the chalk they came; and the only explanation which is left to us, I believe, is, that over the tops of the chalk downs ; over our heads where we stand now, there once stretched layers of sand and gravel, " Tertiary strata," as I have been calling them to you ; and among them layers of this same hard sandstone. When the floods came they must have swept away all these soft sands and gravels (possibly to make the Bagshot sands, of which I shall speak presently), and left the chalk downs bare; but while they had strength to move the finer particles, they had not generally strength to move these sandstone blocks, but let them drop through, and remain upon the freshly-bared floor of chalk, as the only relics of a tertiary land long since swept away ; while some were carried off, possibly by icebergs, as far as Pirbright, and dropped, as the ice- bergs melted, both there, at Dogmersfield, and also, though few and small, in Eversley and the neighbour- hood. But how came these tertiary sandstones to be so very hard, while the strata around them are so soft ? Ladies and gentlemen, I know no more than you. Experience seems to say that stone will not harden into that sugary crystalline state, save under the influ- ence of great heat : but I do not know how the heat should have got to that layer in particular. Possibly there may have been eruptions of steam, of boiling XL] LONDON CLAY BED. 275 water holding silex (flint) in solution — a very rare occurrence : but something similar is still going on in the famous Geysers or boiling springs of Iceland. However, I have no proof that this was the cause. I suppose we shall find out some day how it happened ; for we must never despair of finding out anything which depends on facts. Part of the town of Odiham, and of North Warn- borough, stands, I believe, upon these lower beds, which are called by geologists the Woolwich and Read- ing beds, and the Plastic clays, from the good brick earth which is so often found among them. But as soon as you get to Hook Common, and to Dogmersfield Park, you enter on a fresh deposit ; the great bed of the London clay. I give you a rough section, from a deep well at Dogmersfield House ; from which you may see how steeply the chalk dips down here under the clay, so that Odiham stands, as it were, on the chalk beach of the clay sea. In boring that well there were pierced : Forty feet of the upper sands (the Bagshot sands), of which I shall speak presently. Three hundred and thirty feet of London clay. Then about forty feet of mottled clays and sands. Whether the chalk was then reached, I do not know. It must have been close below. But these mottled clays and sands abound in water (being indeed the layer which supplies the great breweries in London, and those soda-water bottles on dumb-waiters which squirt in Trafalgar Square) ; and (I suppose) the water being reached, the boring ceased. Now, this great bed of London clay, even- more T 2 276 THOUGHTS IN A GRAVEL-PIT. [xi. than the sands below it, deserves the title of a new creation. As a proof — some of you may recollect, when the South- Western Kail way was in making, seeing shells — some of them large and handsome ones — Nautili, taken out of the London clay cutting near Winchneld. Nautili similar to them (but not the same) are now only found in the hottest parts of the Indian seas; and what is more, not one of those shells is the same as the shells you find in the chalk. Throughout this great bed of London clay, the shells, the remains of plants and animals, are altogether a new creation. If you look carefully at the London clay shells, you will be struck with their general likeness to fresh East Indian shells ; and rightly so. They do approach our modern live shells in form, far more than any which preceded them ; and indeed, a few of the London clay shells exist still in foreign seas ; in the beds, again, above the clay, you will meet with still more species which are yet alive ; while in the chalk, and below the chalk, you never meet, I believe, with a single recent shell. It is for this reason that the London clay is said to be Eocene, that is, the dawn of the new creation. The chalk, I told you, seems to have been deposited at the bottom of a still and deep ocean. But the London clay, we shall find, was deposited in a com- paratively shallow sea, least in depth toward High Clere on the west, and deepening towards London and the mouth of the Thames. For not only is the clay deeper as you travel east- ward, but — and this is a matter to which geologists attach great importance — the character of the shells differs in different parts of the clay. xi.] CHANGES OF CLIMATE. 277 You must know that certain sorts of shells live in deep water, and certain in shallow. You may prove this to yourselves, on a small scale, whenever you go to the seaside. You will find that the shell which crawl on the rocks about high- water mark are different from those which you find at low-tide mark ; and those again different from the shells which are brought up by the oyster-dredgers from the sea outside. Now, the lower part of the clay, near here, contains shallow-water shells : but if you went forty miles to the eastward, you would find in the corresponding lower beds of the clay, deep-water shells, and far above them, shallow- water shells such as you find here : a fact which shows plainly that this end of the clay sea was shallowest, and therefore first filled up. But again — and this is a very curious fact — between the time of the Plastic clays and sands, with their oyster-beds and black pebbles, and that of the London clay, great changes had taken place. The Plastic clay and sands were deposited during a period of earth- quake, of upheaval and subsidence of ancient lands j and therefore of violent currents and flood waves, seemingly rushing down from, or round the shores of that Wealden island to the south of us, on the shore of which island Odiham once stood. We know this from the great irregularity of the beds : while the absence of that irregularity proves to us that the London clay was deposited in a quiet sea. But more. A great change in the climate of this country had taken place meanwhile ; slowly perhaps : but still it had taken place. In the lowest clay above the chalk are found at Beading many leaves, and buds, and seeds of trees, 278 THOUGHTS IN A GRAVEL-PIT. [xi. showing that there was dry land near ; and these trees, as far as the best botanists can guess, were trees like those we have in England now. Not of the same species, of course : but still trees belonging to a tem- perate climate, which had its regular warm summer and cold winter. But before the London clay had been all deposited, this temperate climate had changed to a tropical one ; and the plants and animals of the upper part of the London clay had begun to resemble rather those of the mouths of the African slave-rivers. Extraordinary as this is, it is certainly true. We know that the country near the mouth of the Thames, and probably the land round us here, was low rich soil, some half under water, some overflowed by rivers; some by fresh or brackish pools. We know all this ; for we find the shells which belong to a shal- low sea, mixed with fresh-water ones. We know, too, that the climate of this rich lowland was a tropical one. We know that the neighbourhood of the Isle of Sheppey, at the mouth of the Thames, was covered with rich tropic vegetation; with screw pines and acacias, caries and gourds, tenanted by opossums, bats, and vultures : that huge snakes twined themselves along the ground, tortoises dived in the pools, and crocodiles basked on the muds, while the neighbouring seas swarmed with sharks as huge and terrible as those of a West Indian shore. It is all very wonderful, ladies and gentlemen : but so it is : and all we can say is, with the Mussulman — " God is great." And then — when, none knows but God — there came XL] EOCENE SANDS. 279 a time in which some convulsion of nature changed the course of the sea currents, and probably destroyed a vast tract of land between England and France, and probably also, that sunken island of Atlantis of which old Plato dreamed — the vast tract which connected for ages Ireland, Cornwall, Brittany, and Portugal. That convulsion covered up the rich clays with those barren sands and gravels, which now rise in flat and dreary steppes, on the Beacon Hill, Aldershot Moors, Hart- ford Bridge Flat, Frimley ridges, and Windsor Forest. That rich old world was all swept away, and instead of it desolation and barrenness, piling up slowly on its ruins a desert of sand and shingle, rising inch by inch out of a lifeless sea. There is something very awful to me in the barrenness of those Bagshot sands, after the rich tropic life of the^London clay. Not a fossil is to be found in them for miles. Save a few shells, I believe, near Pirbright, there is not a hint that a living being inhabited that doleful sea. But do not suppose, gentlemen and ladies, that we have yet got our gravel-pit made, or that the way-worn pebbles of which it is composed are near the end of their weary journey. Poor old stones ! Driven out of their native chalk, rolled for ages on a sea-beach, they have tried to get a few centuries' sleep in the Eocene sands on the top of the chalk hills behind us, while the London clay was being deposited peacefully in the tropic sea below ; and behold, they are swept out, once more, and hurled pell-mell upon the clay, two hundred feet over our heads. Over our heads, remember. We have come now to a time when Hartford Bridge Flats stretched away to 280 THOUGHTS IN A GRAVEL-PIT. [xi, the Beacon Hill, and many a mile to the south-east- ward— even down into Kent, and stretched also over Winchfield and Dogmersfield hither. What broke them up ? What furrowed out their steep side-valleys ? What formed the magnificent escarpment of the Beacon Hill, or the lesser one of Finchamstead Ridges ? What swept away all but a thin cap of them on the upper part of Dogmersfield Park, another under Winchfield House ; another at Bearwood, and so forth ? The convulsions of a third world ; more fertile in animal life than those which preceded it : but also, more terrible and rapid, if possible, in its changes. Of this third world, the one which (so to speak) immediately preceded our own, we know little yet. Its changes are so complicated that geologists have as yet hardly arranged them. But what we can see, I will sketch for you shortly. A great continent to the south — England, probably an island at the beginning of the period, united to the continent by new beds — the Mammoth ranging up to where we now stand. Then a period of upheaval. The German Ocean becomes dry land. The Thames, a far larger river than now, runs far eastward to join the Seine, and the Ehine, and other rivers, which altogether flow north- ward, in one enormous stream, toward the open sea between Scotland and Norway. And with this, a new creation of enormous quad- rupeds, as yet unknown. Countless herds of elephants pastured by the side of that mighty river, where now the Norfolk fisherman dredges their teeth and bones far out in open sea. The hippopotamus floundered in xi.] PERIODS OF UPHEAVAL. 281 the Severn, the rhinoceros ranged over the south- western counties ; enormous elk and oxen, of species now extinct, inhabited the vast fir and larch forests which stretched from Norfolk to the farthest part of Wales ; hyenas and bears double the size of our modern ones, and here and there the sabre-toothed tiger, now extinct, prowled out of the caverns in the limestone hills, to seek their bulky prey. We see, too, a period — whether the same as this, or after it, I know not yet — in which the mountains of Wales and Cumberland rose to the limits of eternal frost, and Snowdon was indeed Snowdon, an alp down whose valleys vast glaciers spread far and wide ; while the reindeer of Lapland, the marmot of the Alps, and the musk ox of Hudson's Bay, fed upon alpine plants, a few of whose descendants still survive, as tokens of the long past age of ice. And at every successive up- heaval of the western mountains the displaced waters of the ocean swept over the lower lands, filling the valley of the Thames and of the Wey with vast beds of drift gravel, containing among its chalk flints, fragments of stone from every rock between here and Wales, teeth of elephants, skulls of ox and musk ox ; while icebergs, breaking away from the glaciers of the Welsh Alps, sailed down over the spot where we now are, dropping their imbedded stones and silt, to confuse more utterly than before the records of a world rocking and throbbing above the shocks of the nether fire. At last the convulsions get weak. The German Ocean becomes sea once more; the north-western Alps sink again to a level far lower even than their present one; only to rise again, but not so high as .before; 282 THOUGHTS IN A GRAYEL-PIT. [xi. sea-beaches and sea-shells fill many of our lower valleys ; whales by hundreds are stranded (as in the Farnham vale) where is now dry land. Gradually the sunken land begins to rise again, and falls perhaps again, and rises again after that, more and more gently each time, till as it were the panting earth, worn out with the fierce passions of her fiery youth, has sobbed herself to sleep once more, and this new world of man is made. And among it, I know not when, or by what diluvial wave out of hundreds which swept the Pleistocene earth, was deposited our little gravel-pit, from which we started on our journey through three worlds. When? Enough for us that He knows when, in whose hand are the times and the seasons — God the Father of the spirits of all flesh. And now, ladies and gentlemen, take from hence a lesson. I have brought you a long and a strange road. Starting from this seemingly uninteresting pit, we have come upon the records of three older worlds, and on hints of worlds far older yet. We have come to them by no theories, no dreams of the fancy, but by plain honest reasoning, from plain honest facts. That won- derful things had happened, we could see : but why they had happened, we saw not. When we began to ask the reason of this thing or of that, remember how we had to stop, and laying our hands upon our mouths, only say with the Mussulman : " God is great. " We pick our steps, by lanthorn light indeed, and slowly, but still surely and safely, along a dark and difficult road : but just as we are beginning to pride ourselves on having found our way so cleverly, we come to an XL] HEVEBEffCE ANB HUMILITY. 283 edge of darkness ,* and see before our feet a bottomless abyss, down which our feeble lanthorn will not throw its light a yard. Such is true science. Is it a study to make men conceited and self-sufficient ? Believe it not. If a scientific man, or one who calls himself so, be con- ceited, the conceit was there before the science j part of his natural defects : and if it stays there long after he has really given himself to the patient study of nature, then is he one of those of whom Solomon has said : " Though you pound a fool in a mortar among wheat with a pestle, yet will not his folly depart from him." For what more fit to knock the conceit out of a student, than being pounded by these same hard facts — which tell him just enough to let him know — how little he knows? What more fit to make a man patient, humble, reverent, than being stopped short, as every man of science is, after each half-dozen steps, by some, tremendous riddle which he cannot explain — which he may have to wait years to get explained — which as far as he can see will never be explained at all? The poet says : " An undevout astronomer is mad," and he says truth. It is only those who know a little of nature, who fancy that they know much. I have heard a young man say, after hearing a few popular chemical lectures, and seeing a few bottle and squirt experiments : Oh, water — water is only oxygen and hydrogen ! — as if he knew all about it. While the true chemist would smile sadly enough at the youth's hasty conceit, and say in his heart : " Well, he is a lucky fellow. If he knows all about it, it is more 284 THOUGHTS IN A GRAVEL-PIT. [xi. than I do. I don't know what oxygen is, or hydrogen, either. I don't even know whether there are any such things at all. I see certain effects in my experi- ments which I must attribute to some cause, and I call that cause oxygen, because I must call it something ; and other effects which I must attribute to another cause, and I call that hydrogen. But as for oxygen, I don't know whether it really exists. I think it very possible that it is only an effect of something else — another form of a something, which seems to make phosphorus, iodine, bromine, and certain other sub- stances : and as for hydrogen — I know as little about it. I don't know but what all the metals, gold, silver, iron, tin, sodium, potassium, and so forth, are not different forms of hydrogen, or of something else which is the parent of hydrogen. In fact, I know but very little about the matter ; except this, that I do know very little ; and that the more I experiment, and the more I analyse, the more unexpected puzzles and wonders I find, and the more I expect to find till my dying day. True, I know a vast number of facts and laws, thank God ; and some very useful ones among them : but as to the ultimate and first causes of those facts and laws, I know no more than the shepherd-boy outside ; and can say no more than he does, when he reads in the Psalms at school : " I, and all around me, are fearfully and wonderfully made ; marvellous are Thy works, and that my soul knoweth right well." And so, my friends, though I have seemed to talk to you of great matters this night j of the making and the destruction of world after world: yet what does all I have said come to ? I have not got one step beyond what the old Psalmist learnt amid the earthquakes and xi.] MOKAL LESSON OF ALL SCIENCE. 285 volcanoes of the pastures and the forests of Palestine, three thousand years ago. I have not added to his words ; I have only given you new facts to prove that he had exhausted the moral lesson of the subject, when he said : These all wait upon thee, that thou mayest give them their meat in due season. Thou givest, and they gather : thou openest thy hand, and they are filled with good. Thou hidest thy face, they are troubled; thou takest away their breath ; they die and return to their dust. Thou sendest forth thy spirit, they are created; and thou renewest the face of the earth. But — The glory of the Lord shall endure for ever. The Lord shall rejoice in his works. Amen. HOW TO STUDY NATUKAL HISTOEY. HOW TO STUDY NATURAL HISTORY.* LADIES AND GENTLEMEN, I speak to you to-night as to persons assembled, somewhat, no doubt, for amuse- ment, but still more for instruction. Institutions such as this were originally founded for the purpose of instruction ; to supply to those who wish to educate themselves some of the advantages of a regular course of scholastic or scientific training, by means of classes and of lectures. I myself prize classes far higher than I do lectures. From my own experience, a lecture is often a very dangerous method of teaching ; it is apt to engender in the mind of men ungrounded conceit and sciolism, or the bad habit of knowing about subjects without really knowing the subject itself. A young man hears an interesting lecture, and carries away from it doubtless a great many new facts and results : but he really must not go home fancying himself a much wiser man ; and why ? Because he has only heard the lecturer's side of the story. He has been forced to take the facts and the results on trust. He has not examined the facts for * Lecture delivered at Beading, 1846. SO. U 290 HOW TO STUDY NATURAL HISTORY. [xn. himself. He lias had no share in the process by which the results were arrived at. In short, he has not gone into the real scientia, that is, the " knowing " of the matter. He has gained a certain quantity of second-hand information : but he has gained nothing in mental training, nothing in the great " art of learning," the art of finding out things for himself, and of discerning truth from falsehood. Of course, where the lecture is a scientific one, illustrated by diagrams, this defect is not so extreme : but still the lecturer who shows you experiments, is forced to choose those which shall be startling and amusing, rather than im- portant ; he is seldom or never able, unless he is a man of at once the deepest science and the most extraordinary powers of amusing, to give you those experiments in the proper order which will unfold the subject to you step by step ; and after all, an experiment is worth very little to you, unless you perform it yourself, ask questions about it, or vary it a little to solve difficulties which arise in your own mind. Now mind — I do not say all this to make you give up attending lectures. Heaven forbid. They amuse, that is, they turn the mind off from business ; they relax it, and as it were bathe and refresh it with new thoughts, after the day's drudgery or the day's commonplaces ; they fill it with pleasant and healthful images for after- thought. Above all, they make one feel what a fair, wide, wonderful world one lives in ; how much there is to be known, and how little one knows ; and to the earnest man suggest future subjects of study. I only ask you not to expect from lectures what they can never give ; but as to what they can give, I consider, I assure you, the lecturer's vocation a most honourable xn.] THE AKT OF LEARNING. 291 one in the present day, even if we look on Mm as on a mere advertiser of nature's wonders. As such I appear here to-night ; not to teach you natural history ; for that you can only teach yourselves : but to set before you the subject and its value, and if possible, allure some of you to the study of it. I have said that lectures do not supply mental training ; that only personal study can do that. The next question is, What study ? And that is a question which I do not answer in a hurry, when I say, The study of natural history. It is not, certainly, a study which a young man entering on the business of self- education would be likely to take up. To him, naturally, man is the most important subject. His first wish is to know the human world ; to know what men are, what they have thought, what they have done. And there- fore, you find that poetry, history, politics, and philosophy are the matters which most attract the self -guided student. I do not blame him, but he seems to me to be beginning at the middle, rather than at the beginning. I fell into the same fault myself more than once, when I was younger, and meddled in matters too high for me, instead of refraining my soul, and keeping it low ; so I can sympathise with others who do so. But I can assure them that they will find such lofty studies do them good only in proportion as they have first learnt the art of learning. Unless they have learnt to face facts manfully, to discriminate between them skilfully, to draw conclusions from them rigidly ; unless they have learnt in all things to look, not for what they would like to be true, but for what is true, because God has done it, and it cannot be un- done— then they will be in danger of taking up only the u 2 292 HOW TO STUDY NATURAL HISTORY. [xir. books which suit their own prejudices — and every one has his prejudices — and using them, not to correct their own notions, but to corroborate and pamper them ; to confirm themselves in their first narrow guesses, instead of enlarging those guesses into certainty. The son of a Tory turn will read Tory books, the son of a Radical turn Radical books ; and the green spectacles of party and prejudice will be deepened in hue as he reads on, instead of being thrown away for the clear white glass of truth, which will show him reason in all honest sides, and good in all honest men. But, says the young man, I wish to be wide-minded and wide-hearted — I study for that very purpose. I will be fair, I will be patient, I will hear all sides ere I judge. And I doubt not that he speaks honestly. But (I quote with all reverence) though the spirit be willing, the flesh is weak. Studies which have to do with man's history, man's thoughts, man's feelings, are too exciting, too personal, often, alas, too tragical, to allow us to read them calmly at first. The men and women of whom we read are so like ourselves (for the human heart is the same in every age), that we uncon- sciously begin to love or hate them in the first five minutes, and read history as we do a novel, hurrying on to see when the supposed hero and heroine get safely married, and the supposed villain safely hanged, at the end of the chapter, having forgotten all the while, in our haste, to ascertain which is the hero and which is the villain. Mary Queen of Scots was "beau- tiful and unfortunate " — what heart would not bleed for a beautiful woman in trouble ? Why stop to ask whether she brought it on herself? She was seventeen years in prison. Why stop to ascertain what sort of a xn.] FACTS OE SENTIMENT. 293 prison it was ? And as for her guilt, the famous Casket Letters were, of course, a vile forgery. Impossible that they could be true. Hoot down the cold-hearted, and disagreeable, and troublesome man of facts, who will persist in his stupid attempt to disenchant you, and repeat — But the Casket Letters were not a forgery, and we can prove it, if you will but listen to the facts. Her prison, as we will show you (if you will be patient and listen to facts), consisted in greater pomp and luxury than that of most noblemen, with horses, hounds, books, music, liberty to hunt and amuse herself in every way, even in intriguing with every court of Europe, as we can show you again, if you will be patient and listen to facts. And she herself was a very wicked and false woman, an adulteress and a murderess (though fearfully ill-trained in early youth), who sowed the wind, poor wretch, from girlhood to old age, and therefore reaped the whirlwind, receiving the just reward of her deeds. Catherine of Russia, meanwhile, instead of being beautiful and unfortunate, was only handsome and successful. Brand her as a disgrace to human nature. The morals and ways of the two were pretty much on a par, with these exceptions in Catherine's favour — that she had strong passions, Mary none ; that she lived in outer darkness and practical heathendom, while Mary had the light shining all round her, and refused it deliberately again and again. What matter to the sentimentalist ? Hiss the stupid hard-hearted man of facts, by all means. What if he be right ? He has no business to be right ; we will consider him wrong accordingly, of our own sovereign will and pleasure. For after all, if we had the facts put before us (says the conscience of many a hearer), we could not judge of 294 HOW TO STUDY NATUKAL HISTORY. [xn. them; we read to be amused and instructed, not to study cases like so many barristers. So is history read. And so, alas, is history written, too often, for want of a steady and severe training which would enable people to judge dispassionately of facts. In politics the case is the same. In poetry, which appeals more directly to the feelings, it must needs be still worse ; as has been shown sadly enough of late by the success of several poems, in which every possible form of bad taste has only met with unbounded admiration from the many who have not had their senses exercised to discern between good and evil. Now what seems to me to be wanted for young minds, is a study in which no personal likes or dislikes shall tempt them out of the path of mental honesty ; a study in which they shall be free to look at facts exactly as they are, and draw their conclusions patiently and dispassionately. And such a study I have found in that of natural history. Do not fancy it, I beg you, an easy thing to judge fairly of facts ; even to discover the facts at all, when they are staring you in the face ; and to see what it is that you do see. Any lawyer will tell you, that if you ask three honest men to bear testimony concerning an event which happened but yesterday, none of them, if he be at all an interested party, will give you exactly the same account of it : not that he wishes to say what is untrue ; but that different parts of the whole matter having struck each man with different force, a different picture has been left on each man's memory. I have been utterly astounded of late, in investigating these strange stories of table-turning and spirit-rapping, to find how even clear-headed and well-instructed persons xn.] MODEBN PHAEISEES AXD SADDUCEES. 295 (as one had fancied them) become nnable to examine fairly into a thing, the moment the desire to believe has entered the heart; and how no amount of mere cultivation, if the scientific habit of mind be wanting", can prevent people from finding (as in table-turning) miracles in the most simple mechanical accidents ; or from becoming (as in spirit-rapping) the dupes of the most clumsy, palpable, and degrading impostures, even after they have been exposed over and over again in print. Humiliating, indeed, it is, in this so self-confident and boastful nineteenth century, amid steam-engines, railroads, electric telegraphs, and all the wonders of our inductive science, to find exploded superstitions leaping back into life even more mon- strous and irrational than in past ages, and to see our modern Pharisees and Sadducees, like those in Judea of old, seeking after a sign of an unseen world ; and being unable to find one either in the heaven above or in the earth beneath, discovering it at last (I am almost ashamed to speak the words) under the parlour- table. Against such extravagances, and against the loose sentimental tone of mind which begets them, hardly anything would be a better safeguard than the habitual study of nature. The chemist, the geologist, the botanist, the zoologist, has to deal with facts which will make him master of them, and of himself, only in proportion as he obeys them. Many of you doubtless know Lord Bacon's famous apothegm, Nature is only conquered by obeying her; and will understand me when I say, that you cannot understand, much less use for scientific purposes, the meanest pebble, unless you first obey that pebble. Paradoxical; but true. 296 HOW TO STUDY NATURAL HISTORY. [xn. See this pebble which I hold in my hand, picked up out of the street as I came along ; it shall be my only object to-night. There the thing is ; and is as it is, and in no other way; and such it will be, and so it will behave and act, in spite of me, and all my fancies about it, and notions of what it ought to have been like, and what it ought to have done. It is a thought of God's ; and strong by the eternal laws of matter, which are the will of God. It has the whole universe, sun, and stars, and all, backing it by God's appoint- ment, to keep it where it is and what it is ; and till (as Lord Bacon has it) I have discovered and obeyed the will of God revealed in that pebble, it is to me a riddle more insoluble than the Sphinx's, a fortress more im- pregnable than Sevastopol. I may crush it : but destroying is not conquering : but I cannot even mend the road with it prudently, until I have discovered whether Almighty God has made it fit to mend roads with. I may have the genius of a Plato or of a Shake- speare, but all my genius will not avail to penetrate that pebble, or see anything in it but a little round dirty stone, until I have treated the pebble with reverence, as a thing independent of my likes and dis- likes, fancies, and aspirations; and have asked .it humbly to tell me its story, taking counsel meanwhile of hundreds of kindred pebbles, each as silent and re- served as this one ; and watched and listened patiently, through many mistakes and misreadings, to what it has to say for itself, and what God has made it to be. And then at last that little black rounded pebble, from the street outside, may, and will surely, if I be patient and honest enough, tell me a tale wilder and grander than any which I could have dreamed for myself; will • xii.] THE STORY OF A PEBBLE. . • ^ shame the meanness of my imagination, btf tjie awjjul ' , magnificence of God's facts, and say to me : ^ ' >, " Ages and yEons since, thousands on thousands; pf years before there was a man to till the ground, I the . little pebble was a living sponge, in the milky depths of the great chalk ocean; and hundreds of living atomies, each more fantastic than a ghost-painter's dreams, swam round me, and grew on me, and multi- plied, till I became a tiny hive of wonders, each one of which would take you a life to understand. And then, I cannot yet tell you how, and till I tell you you will never know, the delicate flint-needles in my skin gathered other particles of flint to them, and I and all my inhabitants became a stone; and the chalk-mud settled round us, I know not how, and covered us in ; and for ages on ages I lay buried in the nether dark, and felt the glow of the nether fires, and was cracked and tossed by a hundred earthquakes. Again and again I have been part of an island, and then again sunk beneath the sea, to be upheaved again after long centuries, till I saw the light once more, and dropped from the face of some chalk cliff far away among high hills which have long since been swept off the face of the earth, and was tossed by currents till I became a pebble on the beach, while Beading was a sand-bank in a shallow sea. There I lay and rolled till I was rounded, for many a century more; till flood after flood past over me, and a new earth was made ; and I was mixed up with fresh flints from wasting chalk- hills, and with freestones from the Gloucestershire wolds, and with quartz-boulders from the mountains of Wales, while over me swept the carcases of drowned elephants and bisons, and many a monstrous beast ; 298 HOW TO STUDY NATURAL HISTORY. [xn. and above me floated uprooted palms, and tropic fruits and seeds, and the wrecks of a dying world. And then there came another age — And it grew wondrous cold ; And ice mast-high came floating by, As green as emerald ; and as the icebergs melted in the sun, the stones and the silt fell out of them, and covered me up ; and I was in darkness once more, vexed by many an earth- quake, till I became part of this brave English land. And now I am a pebble here in Reading street, to be ground beneath the wheels of busy men : and yet you cannot kill me, or hinder my fulfilling the law which cannot be broken. This year I am a pebble in the street ; and next year I shall be dust upon the fields above ; and the year after that I shall be alive again, and rise from the ground as fair green wheat-stems, bearing up food for the use of man. And even after that you cannot kill me. The trampled and sodden straw will rot only to enter into a new life ; and I shall pass through a fresh cycle of strange adventures, age after age, till time shall be no more; doing my work in my generation, and fulfilling to the last the will of God, as faithfully as when I was the water- breathing sponge in the abysses of the old chalk sea." All this and more, gentlemen and ladies, the pebble could tell to you, and will : but he is old and venerable^ and like old men, he wishes to be approached with respect, and does not like to. be questioned too much or too rapidly ; so that you must not be offended if you meet with more than one rebuff from him ; or if he keeps stubborn silence, till he has seen that you are a xn.] VALUE OF IMAGINATION. 299 modest and attentive person, to whom it is worth while to open a little of his forty or fifty thousand years' experience. Second only to the good effect of this study on the logical faculty, seems to me to be its effect on the imagination. Not merely in such objects as the pebble, whose history I have so hastily, but I must add faith- fully, sketched ; but in the tiniest piece of mould on a decayed fruit, the tiniest animalcule from the stagnant pool, will imagination find inexhaustible wonders, and fancy a fairy-land. And I beg my elder hearers not to look on this as light praise. Imagination is a valuable thing ; and even if it were not, it is a thing, a real thing, a faculty which every one has, and with which you must do something. You cannot ignore it ; it will assert its own existence. You will be wise not to neglect it in young children ; for if you do not provide wholesome food for it, it will find unwholesome food for itself. I know that many, especially men of busi- ness, are inclined to sneer at it, and ask what is the use of it ? The simple answer is, God has made it ; and He has made nothing in vain. But you will find that in practice, in action, in business, imagination is a most useful faculty, and is so much mental capital, whensoever it is properly trained. Consider but this one thing, that without imagination no man can pos- sibly invent even the pettiest object ; that it is one of the faculties which essentially raises man above the brutes, by enabling him to create for himself ; that the first savage who ever made a hatchet must have imagined that hatchet to himself ere he began it ; that every new article of commerce, every new opening for trade, must be arrived at by acts of imagination ; by 300 HOW TO STUDY NATURAL HISTORY. [xn. the very same faculty wliicli the poet or the painter employs, only on a different class of objects ; remember that this faculty is present in some strength in every mind of any power, in every mind which can do more than follow helplessly in the beaten track, and do nothing but what it has seen others do already : and then see whether it be not worth while to give the young a study which above all others is fitted to keep this important and universal faculty in health. Now, from fifty to five-and-twenty years ago, under the influence of the Franklin and Edgeworth school of education, imagination was at a discount. That school was a good school enough : but here was one of its faults. It taught people to look on imagination as quite a useless, dangerous, unpractical, bad thing, a sort of mental disease. And now, as is usual after an unfair depreciation of anything, has come a revolu- tion ; and an equally unfair glorifying of the imagina- tion ; the present generation have found out suddenly that the despised faculty is worth something, and therefore are ready to believe it worth everything ; so that nowadays, to judge from the praise heaped on some poets, the mere possession of imagination, how- ever ill regulated, will atone for every error of false taste, bad English, carelessness for truth; and even for coarseness, blasphemy, and want of common morality ; and it is no longer charity, but fancy, which is to cover the multitude of sins. The fact is, that youth will always be the period of imagination ; and the business of a good education will always be to prevent that imagination from being thrown inward, and producing a mental fever, diseasing itself and the whole character by feeding on its own 2n.] .' THE FAIRY-LAND OF SCIENCE. 301 fancies, its own day dreams, its own morbid feelings, its likes and dislikes ; even if it do not take at last to viler food, to French novels, and lawless thoughts, which are but too common, alas ! though we will not speak of them here. To turn the imagination not inwards, but outwards ; to give it a class of objects which may excite wonder, reverence, the love of novelty and of discovering, with- out heating the brain or exciting the passions — this is one of the great problems of education ; and I believe from experience that the study of natural history supplies in great part what we want. The earnest naturalist is pretty sure to have obtained that great need of all men, to get rid of self. He who, after the hours of business, finds himself with a mind relaxed and wearied, will not be tempted to sit at home dream- ing over impossible scenes of pleasure, or to go for amusement to haunts of coarse excitement, if he have in every hedge-bank, and woodland, and running stream, in every bird among the boughs, and every cloud above his head, stores of interest which will enable him to forget awhile himself, and man, and all the cares, even all the hopes of life, and to be alone with the inexhaus- tible beauty and glory of Nature, and of God who made her. An hour or two every day spent after business- hours in botany, geology, entomology, at the telescope or the microscope, is so much refreshment gained for the mind for to-morrow's labour, so much rest for irritated or anxious feelings, often so much saved from frivolity or sin. And how easy this pursuit. How abundant the subjects of it ! Look round you here. Within the reach of every one of you are wonders beyond all poets' dreams. Not a hedge-bank but has 302 HOW TO STUDY NATURAL HISTORY. [xir. its Hundred species of plants, each different and each beautiful ; and when you tire of them — if you ever can tire — a trip into the meadows by the Thames, with the rich vegetation of their dikes, floating flower-beds of every hue, will bring you as it were into a new world, new forms, new colours, new delight. You ask why this is ? And you find yourself at once involved in questions of soil and climate, which lead you onward, step by step, into the deepest problems of geology and chemistry. In entomology, too, if you have any taste for the beauties of form and colour, any fondness for mechanical and dynamical science, the insects, even to the smallest, will supply endless food for such likings ; while their instincts and their transformations, as well as the equally wondrous chemical transformation of salts and gases into living plants, which agricultural chemistry teaches you, will tempt you to echo every day Mephi- stopheles's magic song, when he draws wine out of the table in Auersbach/s cellar : Wine is grapes, and grapes are wood — The wooden board yields wine as good : It is but a deeper glance Into Nature's countenance. All is plain to him who seeth ; Lift the veil and look beneath, And behold, the wise man saith, Miracles, if you have faith. Believe me you need not go so far to find more than you will ever understand. An hour's summer walk, in the company of some one who knows what to look for and how to look for it, by the side of one of those stagnant dikes in the meadows below, would furnish you with subjects for a month's investigation, in the NATURE IS NEVER DEAD. 303 form of plants, shells, and animalcules, on each of which a whole volume might be written. And even at this seemingly dead season of the year, fancy not that nature is dead — not even that she sleeps awhile. Every leaf which drops from the bough, to return again into its gases and its dust, is working out chemical problems which have puzzled a Boyle and a Lavoisier, and about which a Liebig and a Faraday will now tell you that they have but some dim guess, and that they stand upon the threshold of knowledge like (as Newton said of himself) children gathering a few pebbles, upon the shore of an illimitable sea. In every woodland, too, innumerable fungi are at work, raising from the lower soil rich substances, which, strewed on the surface by quick decay, will form food for plants higher than themselves ; while they, by their variety and beauty, both of form and colour, might well form studies for any painter, and by the obscure laws of their reproduction, studies for any philosopher. Why, there is not a heap of dead leaves among which by picking it through carefully you might not find some twenty species of delicate and elegant land- shells; hardly a tree-foot at which, among the moss and mould, you might not find the chrysalides of beautiful moths, where caterpillars have crawled down the trunk in autumn, to lie there self-buried and die to live again next spring in a new and fairer shape. And if you cannot reach even there, go to the water-but in the nearest yard, and there, in one pinch of green scum, in one spoonful of water, behold a whole "Divina Commedia " of living forms, more fantastic a thousand times than those with which Dante peopled his unseen world : and then feel, as you should feel, abashedf at the 304- HOW TO STUDY NATURAL HISTORY. [xn. ignorance and weakness of mortal man ; abashed still more at that rash conceit of his, which makes him fancy himself the measure of all things ; and say with me : " Oh Lord, thy works are manifold ; thy ways are very deep. In wisdom hast thou made them all, the earth is full of thy riches. Thou openest thy hand, and fillest all things living with plenteousness ; they continue this day according to thine ordinance, for all things serve thee. Thou hast made them fast for ever and ever ; thou hast given them a law which shall not be broken. Let them praise the name of the Lord ; for he spake the word and they were made, he com- manded, and they were created." This I shall say, but little more than this, on the religious effect of the study of natural history. I do not wish to preach a sermon to you. I can trust God's world to bear better witness than I can, of the Loving Father who made it. I thank him from my own experience for the testimony of His Creation, only next to the testimony of His Bible. I have watched scien- tific discoveries which were supposed in my boyhood to be contrary to revelation, found out one by one to confirm and explain revelation, as crude and hasty theories were corrected by more abundant facts, and men saw more clearly what both the Bible and Nature really did say ; and I can trust that the same process will go on for ever, and that God's earth and God's word will never contradict each other. I have found the average of scientific men, not less, but more, godly and righteous men than the average of their neigh- bours; and I can trust that this will be more and more the case as science deepens and widens. And therefore I can trust that every patient, truthful, and xn.] PRACTICAL VALUE OP SCIENCE. 305 healthful mind will, the more it contemplates the works of God, re-echo St. PauFs great declaration that the Invisible things of God are clearly seen from the foun- dation of the world, being understood by the things which are made, even His eternal power and Godhead. And so trusting, I pass on to a lower view of the subject, and yet not an unnecessary one. In an industrial country like this, the practical utility of any study must needs be always thrown into the scale ; and natural history seems at first sight somewhat unpractical. What money will it earn for a man in after life ? — is a question which will be asked; and which it is folly to despise. For if the only answer be : " None at all/' a man has a right to rejoin : " Then let me take up some pursuit which will train and refresh my mind as much as this one, and yet be of pecuniary benefit to me some day." If you can find such a study, by all means follow it : but I say that this study too may be of great practical benefit in after life. How much money have I, young as I am, seen wasted for want of a little knowledge of botany, geology, or chemistry. How many a clever man becomes the dupe of empirics for want of a little science. How many a mine is sought for where no mine could be ; or crop attempted to be grown, where no such crop could grow. How many a hidden trea- sure, on the other hand, do men walk over unheeding. How many a new material, how many an improved process in manufacture is possible, yet is passed over, for want of a little science. And for the man who emigrates, and comes in contact with rude nature teeming with unsuspected wealth, of what incalculable advantage to have if it be but the rudiments of those so. x 306 HOW TO STUDY NATURAL HISTORY. [HI. sciences, which will tell him the properties, and there- fore the value, of the plants, the animals, the minerals, the climates with which he meets ? True — home- learnt natural history will not altogether teach him about these things, because most of them must needs be new : but it will teach him to compare and classify them as he finds them, and so by analogy with things already known to him, to discover their intrinsic worth. For natural history stands to man's power over Nature, that is, to his power of being useful to himself and to mankind, in the same relation as do geography, grammar, arithmetic, geometry, political economy; none of them, perhaps, bearing directly on his future business in life; but all training his mind for his business, all giving him the rudiments of laws which he will hereafter work out and apply to his profession. And even at home, be sure that such studies will bear fruit in after life. The productive wealth of England is not exhausted, doubt it not ; our grandchildren may find treasures in this our noble island of which we never dreamed, even as we have found things of which our forefathers dreamed not. Eecollect always that a great market town like this is not merely a commercial centre ; not perhaps even a commercial centre at all : but that she is an agricultural centre, and one of the most important in England ; that the increase of science here will be sure more or less to extend itself to the neighbourhood : and then lay to heart this one fact. A friend of mine, and one whom I am proud to call my friend, succeeding to an estate, thought good to cultivate it himself. And being a man of common1 sense, he thought good to know something of what xii.] SCIENCE ON A COUNTRY ESTATE. 307 he was doing. And he said to himself : The soil, and the rain, and the air are my raw materials. I ought surely then to find out what soil, and rain, and air are; so I must become a geologist and a meteorologist. Vegetable substances are what I am to make. And I ought surely to know what it is that I am making ; so I must become a botanist. The raw material does somehow or other become manufactured into the produce ; the soil into the vegetable. I ought surely to know a little about the processes of my own manufacture ; so I must learn chemistry. Chance and blind custom are not enough for me. At best they can but leave me where they found me, at their mercy. Science I need; and science I will acquire. What was the result ? After many a mis- take and disappointment, he succeeded in discovering on his own estate a mine of unsuspected wealth — not of gold indeed, but of gold's worth — the elements of human food. He discovered why some parts of his estate were fertile, while others were barren ; and by applying the knowledge thus gained, he converted some of his most barren fields into his most fertile ones ; he preserved again and again his crops from blight, while those of others perished all around him ; he won for himself wealth, and the respect and honour of men of science ; while those around him, slowly opening their eyes to his improvements, folio wed his lessons at second- hand, till the whole agriculture of an important district has become gradually but permanently improved, under the auspices of one patient and brave man, who knew that knowledge was power, and that only by obeying nature can man conquer her. Bear in mind both these last great proverbs ; and x 2 308 HOW TO STUDY NATURAL HISTORY. [xn, combine them in your mind. Remember that while England is, and ever will be, behindhand in metaphy- sical and scholastic science, she is the nation which above all others has conquered nature by obeying her ; that as it pleased God that the author of that proverb, the father of inductive science, Bacon Lord Yerulam, should have been an Englishman, so it has pleased Him that we, Lord Bacon's countrymen, should improve that precious heirloom of science, inventing, producing, exporting, importing, till it seems as if the whole human race, and every land from the equator to the pole must henceforth bear the indelible impress and sign manual of English science. And bear in mind, as I said just now, that this study of natural history is the grammar of that very physical science which has enabled England thus to re- plenish the earth and subdue it. Do you not see, then, that by following these studies you are walking in the very path to which England owes her wealth ; that you are training in yourselves that habit of mind which God has approved as the one which He has ordained for Englishmen, and are doing what in you lies toward carrying out, in after life, the glorious work which God seems to have laid on the English race, to replenish the earth and subdue it ? One word more, and I have done. Unless you are al- ready tired of hearing me, I would suggest a fewpractical hints before we part. The best way of learning these matters is by classes, in which men may combine and in- terchange their thoughts and observations. The greatest savants find this; and have their Microscopic Society, Linnaean, Royal, Geological Societies, British Associa- tions, and what not, in which all may know what each xii.] VALUE OF SCIENCE CLASSES. 309 has done, and each share in the learning of all ; for as iron sharpeneth iron, so a man sharpens the face of his friend, I have nothing to say against debating societies : perhaps it was my own fault that whenever I belonged to one as a young man, I found them inclined to make me conceited, dictatorial, hasty in my judgments, trying to state a case before I had investigated it, to teach others before I had taught myself, to make a fine speech, not to find out the truth; till in, I think, a wise moment for me, I vowed at twenty never to set foot in one again, and kept my vow. Be that as it may, I wish that side by side with the debating society, I could see young men joining in natural history societies ; going out in company on pleasant evenings to search together after the hidden treasures of God's world, and read the great green book which lies open alike to peasant and to peer ; and then meeting, say once a week, to debate, not of opinions but of facts ; to show each what they had found, to classify and explain, to learn and to wonder together. In such a class many appliances would be possible. A micro- scope, for instance, or chemical apparatus, might belong to the society, which each individual by himself would not be able to afford ; while as for books — books on these subjects are now published at a marvellous cheapness, which puts them within the reach of every one, and of an excellence which twenty years ago was impossible. Any working man in this town might now, especially in a class, consult scientific books, for which I, as a lad, twenty years ago, was sighing in vain ; nay, many of which, twenty years ago, the richest nobleman could not have purchased; for the simple reason, that, dear or cheap, they did ijot exist. 310 HOW TO STUDY NATURAL HISTORY, [xn. Such classes, too, would be the easiest, cheapest, and pleasantest way of establishing what ought to exist, I think, in connection with every institution like this, namely, a museum. If the young men were really ready and willing to collect objects of interest, I doubt not that public-spirited men would be found, who would undertake the expense of mounting them in a museum. And you cannot imagine, I assure you, how large and how interesting a museum might be formed of the natural curiosities of a neighbourhood like this, I may say, indeed, of any neighbourhood or of any parish : but your museum need not be confined to the neighbourhood. Societies now exist in every part of England, who will be happy to exchange their dupli- cates for yours. As your collection increased in im- portance, old members abroad would gladly contribute foreign curiosities to your stock. Neighbouring gentle- men would send you valuable objects which had been lumbering their houses, uncared for, because they stood alone, and formed no part of a collection ; and I, for one, would be happy to add something from the fauna and flora of those moorlands, where I have so long enjoyed the wonders of nature; never, I can honestly say, alone ; because when man was not with me, I had companions in every bee, and flower, and pebble ; and never idle, because I could not pass a swamp, or a tuft of heather, without finding in it a fairy tale of which I could but decipher here and there a line or two, and yet found them more interesting than all the books, save one, which were ever written upon earth. THE NATURAL THEOLOGY OF THE FUTURE. V/ THE NATURAL THEOLOGY OF THE FUTURE. Bead at Sion College, January 10th, 1871. WHEN I accepted the unexpected and undeserved •honour of being allowed to lecture here, the first subject which suggested itself to me was Natural Theology. It is one which has taken up much of my thought for some years past,* which seems to me more and more * Novalis, I think, says that one's own thought gains quite infinitely in value as soon as one finds it shared by even one other human being. The saying has proved true, at least, to me. The morning after this paper was read, I received a book, "The Genesis of Species, by St. George Mivart, F.R.S." The name of the author demanded all attention and respect ; and as I read on, I found him, to my exceeding pleasure, advocating views which I had long held, with a learning and ability to which I have no pretensions. The book will, doubtless, excite much useful criticism and discussion in the scientific world. I hope that it may do the same in the clerical world ; and I earnestly beg those clergymen who heard me with so much patience and courtesy at Sion College, to ponder well Mr. Mivart's last chapter, on " Theology and Evolution." 314 THE NATURAL THEOLOGY OF THE FUTUKE. [xm, important, and which is just now somewhat forgotten ; I therefore determined to say a few words on it to- night. I do not pretend to teach but only to suggest ; to point out certain problems of Natural Theology, the further solution of which ought, I think, to be soon attempted. I wish to speak, remember, not on natural religion, but on natural theology. By the first, I understand what can be learned from the physical universe of man's duty to God and to his neighbour ; by the latter, I understand what can be learned concerning God Himself. Of natural religion I shall say nothing. I do not even affirm that a natural religion is possible : but I do very earnestly believe that a natural theology is possible; and I earnestly believe also that it is most important that natural theology should, in every age, keep pace with doctrinal or ecclesiastical theology. Bishop Butler certainly held this belief. His " Analogy of Religion, Natural and Revealed, to the Constitution and Course of Nature" — a book for which I entertain the most profound respect — is based on a belief that the God of Nature and the God of Grace are one ; and that, therefore, the God who satisfies our conscience ought more or less to satisfy our reason also. To teach that was Butler's mission, and he fulfilled it well. But it is a mission which has to be re-filled again and again, as human thought changes and human science develops; for if in any age or country the God who seems to be revealed by Nature seems different from the God who is revealed by the then popular religion, then that God, and the religion xin.] DUTY OF THE CLERGY. 315 which tells of that God, will gradually cease to be believed in. For the demands of Reason (as none knew better than good Bishop Butler) must be and ought to be satisfied. And when a popular war arises between the reason of a generation and its theology, it behoves the ministers of religion to inquire, with all humility and godly fear, on which side lies the fault : whether the theology which they expound is all that it should be, or whether the reason of those who impugn it is all that it should be. For me, as (I trust) an orthodox priest of the Church of England, I believe the theology of the National Church of England, as by law established, to be eminently rational as well as scriptural. It is not, therefore, surprising to me that the clergy of the Church of England, since the foundation of the Royal Society in the seventeenth century, have done more for sound physical science than the clergy of any other denomination ; or that the three greatest natural theologians with which I, at least, am acquainted — Berkeley, Butler, and Paley — should have belonged to our Church. I am not unaware of what the Germans of the eighteenth century have done. I consider Goethe's claims to have advanced natural theology very much over-rated : but I do recommend to young clergymen Herder's " Outlines of the Philosophy of the History of Man" as a book (in spite of certain defects) full of sound and precious wisdom. But it seems to me that English natural theology in the eighteenth century stood more secure than that of any other nation, on the foundation which Berkeley, 316 THE NATURAL THEOLOGY OF THE FUTURE, [xm. Butler, and Paley had laid ; and that if our orthodox thinkers for the last hundred years had followed steadily in their steps, we should not be deploring now a wide, and as some think increasing, divorce between Science and Christianity. But it was not so to be. The impulse given by Wesley and Whitfield turned (and not before it was needed) the earnest mind of England almost ex- clusively to questions of personal religion ; and that impulse, under many unexpected forms, has continued ever since. I only state the fact — I do not deplore it; God forbid ! Wisdom is justified of all her children, and as, according to the wise American, " it takes all sorts to make a world," so it takes all sorts to make a living Church. But that the religious temper of England for the last two or three generations has been unfavourable to a sound and scientific development of natural theology, there can be no doubt. We have only, if we need proof, to look at the hymns — many of them very pure, pious, and beautiful — which are used at this day in churches and chapels by persons of every shade of opinion. How often is the tone in which they speak of the natural world one of dissatisfaction, distrust, almost contempt. " Disease, decay, and death around I see," is their key-note, rather than " 0 all ye works of the Lord, bless Him, praise Him, and magnify Him together." There lingers about them a savour of the old monastic theory, that this earth is the devil's planet, fallen, accursed, goblin-haunted, needing to be exorcised at every turn before it is useful or even safe for man. An age which has adopted as its most popular hymn a paraphrase of the medigeval monk's " Hie breve vivitur," and in xiii.] SCKIPTURE AND ADVANCED SCIENCE. 317 which stalwart public- school boys are bidden in their chapel worship to tell the Almighty God of Truth that they lie awake weeping at night for joy at the thought that they will die and see Jerusalem the Golden — is doubtless a pious and devout age ; but not — at least as yet — an age in which natural theology is likely to attain a high, a healthy, or a scriptural development. Not a scriptural development. Let me press on you, my clerical brethren, most earnestly this one point. It is time that we should make up our minds what tone Scripture does take toward Nature, natural science, natural theology. Most of you, I doubt not, have made up your minds already, and in consequence have no fear of natural science, no fear for natural theology. But I cannot deny that I find still lingering here and there certain of the old views of nature of which I used to hear but too much here in London some five-and-thirty years ago; not from my own father, thank God ! for he, to his honour, was one of those few London clergy who then faced and defended advanced physical science; but from others — better men too than I shall ever hope to be — who used to consider natural theology as useless, fallacious, im- possible, on the ground that this Earth did not reveal the will and character of God, because it was cursed and fallen; and that its facts, in consequence, were not to be respected or relied on. This, I was told, was the doctrine of Scripture, and was therefore true. But when, longing to reconcile my conscience and my reason on a question so awful to a young student of natural science, I went to my Bible, what did I find ? No word of all this. Much — thank God, I may say 318 THE NATURAL THEOLOGY OF THE FUTURE, [xin. one continuous undercurrent — of the very opposite of all this. I pray you bear with me, even though I may seem impertinent. But what do we find in the Bible, with the exception of that first curse ? That, remember, cannot mean any alteration in the laws of nature by which man's labour should only produce for him hence- forth thorns and thistles. For, in the first place, any such curse is formally abrogated in the eighth chapter and twenty-first verse of the very same document — "I will not again curse the earth any more for man's sake. While the earth remaineth, seed-time and harvest, cold and heat, summer and winter, day and night shall not cease." And next, the fact is not so ; for if you root up the thorns and thistles, and keep your land clean, then assuredly you will grow fruit-trees and not thorns, wheat and not thistles, according to those laws of Nature which are the voice of God expressed in facts. And yet the words are true. There is a curse upon the earth, though not one which, by altering the laws of nature, has made natural facts untrustworthy. There is a curse on the earth; such a curse as is expressed, I believe, in the old Hebrew text, where the word " adamah " (correctly translated in our version " the ground ") signifies, as I am told, not this planet, but simply the soil from whence we get our food; such a curse as certainly is expressed by the Septuagint and the Vulgate versions : " Cursed is the earth " — ev TOIS epyois ; " in opere tuo/' as the Vulgate has it — " in thy works." Man's work is too often the curse of the very planet which he misuses. None should know that better than the botanist, who sees whole regions desolate, and given up to sterility and literal xiii.] VIRGIN SOILS AND WASTE LANDS. 319 thorns and thistles, on account of man's sin and folly, ignorance and greedy waste. Well said that veteran botanist, the venerable Elias Fries, of Lund : " A broad band of waste land follows gradually in the steps of cultivation. If it expands, its centre and its cradle dies, and on the outer borders only do we find green shoots. But it is not impossible, only difficult, for man, without renouncing the advantage of culture itself, one day to make reparation for the injury which he has inflicted : he is appointed lord of creation. True it is that thorns and thistles, ill- favoured and poisonous plants, well named by botanists rubbish plants, mark the track which man has proudly traversed through the earth. Before him lay original Nature in her wild but sublime beauty. Behind him he leaves the desert, a deformed and ruined land ; for childish desire of destruction, or thoughtless squander- ing of vegetable treasures, has destroyed the character of nature; and, terrified, man himself flies from the arena of his actions, leaving the impoverished earth to barbarous races or to animals, so long as yet another spot in virgin beauty smiles before him. Here again, in selfish pursuit of profit, and consciously or un- consciously following the abominable principle of the great moral vileness which one man has expressed — 1 Apres nous le Deluge ' — he begins anew the work of destruction. Thus did cultivation, driven out, leave the East, and perhaps the deserts formerly robbed of their coverings ; like the wild hordes of old over beautiful Greece, thus rolls this conquest with fearful rapidity from East to West through America ; and the planter now often leaves the already exhausted land, and the eastern climate, become infertile through the 320 THE NATUKAL THEOLOGY OF THE FUTURE, [xm, demolition of the forests, to introduce a similar revolu- tion into the Far West." * As we proceed, we find nothing in the general tone- of Scripture which can hinder our natural theology being at once scriptural and scientific. If it is to be scientific, it must begin by approach- ing Nature at once with a cheerful and reverent spirit, as a noble, healthy, and trustworthy thing : and what is that, save the spirit of those who wrote the 104th, 147th, and 148th Psalms — the spirit, too, of him who wrote that Song of the Three Children, which is, as it were, the flower and crown of the Old Testament, the summing up of all that is most true and eternal in the old Jewish faith ; and which, as long as it is sung in our churches, is the charter and title-deed of all Christian students of those works of the Lord, which it calls on to bless Him, praise Him, and magnify Him for ever ? What next will be demanded of us by physical science? Belief, certainly, just now, in the per- manence of natural laws. Why, that is taken for granted, I hold, throughout the Bible. I cannot see how our Lord's parables, drawn from the birds and the flowers, the seasons and the weather, have any logical weight, or can be considered as aught but capricious and fanciful illustrations — which God forbid — unless we look at them as instances of laws of the natural world, which find their analogues in the laws of the spiritual world, the kingdom of God. I cannot con- ceive a man's writing that 104th Psalm who had not the most deep, the most earnest sense of the per- * Quoted from Schleiden's " The Plant, a Biography." — Lecture XI. in fine. mi.] IS GOD A GOD OF LOVE? 321 manence of natural law. But more : the fact is expressly asserted again and again. (t They continue this day according to Thine ordinance, for all things serve Thee." " Thou hast made them fast for ever and ever. Thou hast given them a law which shall not be broken " Let us pass on, gentlemen. There is no more to be said about this matter. But next, it will be demanded of us that natural theology shall set forth a God whose character is con- sistent with all the facts of nature, and not only with those which are pleasant and beautiful. That challenge was accepted, and I think victoriously, by Bishop Butler as far as the Christian religion is concerned. As far as the Scripture is concerned, we may answer thus : It is said to us — I know that it is said : You tell us of a God of love, a God of flowers and sunshine, of singing birds and little children. But there are more facts in nature than these. There is premature death, pestilence, famine. And if you answer: Man has con- trol over these ; they are caused by man's ignorance and sin, and by his breaking of natural laws — what will you make of those destructive powers over which he has no control; of the hurricane and the earthquake; of poisons, vegetable and mineral ; of those parasitic Entozoa whose awful abundance, and awful destructive- ness in man and beast, science is just revealing — a new page of danger and loathsomeness ? How does that suit your conception of a God of love ? We can answer : Whether or not it suits our con- ception of a God of love, it suits Scripture's conception of Him. For nothing is more clear — nay, is it not urged again and again, as a blot on Scripture? — that it reveals sc. Y 322 THE NATURAL THEOLOGY OF THE FUTURE, [xm. a God not merely of love, but of sternness — a God in whose eyes physical pain is not the worst of evils, nor animal life (too often miscalled human life) the most precious of objects — a God who destroys, when it seems fit to Him, and that wholesale, and seemingly without either pity or discrimination, man, woman and child, visiting the sins of the fathers on the children, making the land empty and bare, and destroying from off it man and beast ! This is the God of the Old Testament. And if any say (as is often too rashly said) : This is not the God of the New : I answer, but have you read your New Testament ? Have you read the latter chapters of St. Matthew ? Have you read the opening of the Epistle to the Romans ? Have you read the Book of Revelations ? If so, will you say that the God of the New Testament is, compared with the God of the Old, less awful, less destructive, and there- fore less like the Being — granting always that there is such a Being — who presides over nature and her destructive powers ? It is an awful problem. But the writers of the Bible have faced it valiantly. Physical science is facing it valiantly now. Therefore natural theology may face it likewise. Remember Carlyle's great words about poor Francesca in the Inferno : " Infinite pity, yet also infinite rigour of law. It is so Nature is made. It is so Dante discerned that she was made/' There are two other points on which I must beg leave to say a few words. Physical science will demand of our natural theologians that they should be aware of their importance, and let (as Mr. Matthew Arnold would say) their thoughts play freely round them. I mean questions of Embryology and questions of Race. xiii.] EMBRYOLOGY AND RACE. 323 On the first there may be much to be said, which is for the present best left unsaid, even here. I only ask you to recollect how often in Scripture those two plain old words, beget and bring forth, occur, and in what important passages. And I ask you to remember that marvellous essay on Natural Theology, if I may so call it in all reverence, the 139th Psalm, and judge for yourself whether he who wrote that did not consider the study of Embryology as important, as significant, as worthy of his deepest attention, as an Owen, a Huxley, or a Darwin. Nay, I will go farther still, and say, that in those great words — " Thine eyes did see my substance, yet being imperfect ; and in Thy book all my members were written, which in continuance were fashioned, when as yet there was none of them," — in those words, I say, the Psalmist has anticipated that realistic view of embryological questions to which our most modern philosophers are, it seems to me, slowly, half unconsciously, but still inevitably, returning. Next, as to Race. Some persons now have a nervous fear of that word, and of allowing any im- portance to difference of races. Some dislike it, because they think that it endangers the modern notions of democratic equality. Others because they fear that it may be proved that the negro is not a man and a brother. I think the fears of both parties groundless. As for the negro, I not only b eh' eve him to be of the same race as myself, but that— if Mr. Darwin' s theories are true — science has proved that he must be such. I should have thought, as a humble student of such questions, that the one fact of the unique distribution of the hair in all races of human beings, was full moral proof that they had all T 2 324 THE NATURAL THEOLOGY OF THE FUTURE, [xm. had one common ancestor. But this is not matter of natural theology. What is matter thereof, is this : Physical science is proving more and more the immense importance of E-ace ; the importance of hereditary powers, hereditary organs, hereditary habits, in all organised beings, from the lowest plant to the highest animal. She is proving more and more the omnipresent action of the differences between races ; how the more favoured race (she cannot avoid using the epithet) exterminates the less favoured, or at least expels it, and forces it, under penalty of death, to adapt itself to new circumstances ; and, in a word, that competition between every race and every indi- vidual of that race, and reward according to deserts, is (as far as we can see) an universal law of living things. And she says — for the facts of history prove it — that as it is among the races of plants and animals, so it has been unto this day among the races of men. The natural theology of the future must take count of these tremendous and even painful facts : and she may take count of them. For Scripture has taken count of them already. It talks continually — it has been blamed for talking so much — of races, of families ; of their wars, their struggles, their exterminations ; of races favoured, of races rejected, of remnants being saved to continue the race ; of hereditary tendencies, hereditary excellences, hereditary guilt. Its sense of the reality and importance of descent is so intense, that it speaks of a whole tribe or a whole family by the name of its common ancestor, and the whole nation of the Jews is Israel, to the end. And if I be told this is true of the Old Testament, but not of the New, I must answer : What ! does not St. Paul hold the identity xin.] NATURE AND GRACE. 325 of the whole Jewish race with Israel their forefather, as strongly as any prophet of the Old Testament ? And what is the central historic fact, save One, of the New Testament, but the conquest of Jerusalem — the dispersion, all but destruction of a race, not by miracle, but by invasion, because found wanting when weighed in the stern balances of natural and social law ? Gentlemen, think of this. I only suggest the thought; but I do not suggest it in haste. Think over it — by the light which our Lord's parables, His analogies between the physical and social constitution of the world, afford — and consider whether those awful words, fulfilled then and fulfilled so often since — " The kingdom of God shall be taken from yo^u, and given to a nation bringing forth the fruits hereof " — may not be the supreme instance, the most complex develop- ment of a law which runs through all created things, down to the inoss which struggles for existence on the rock ! Do I say that this is all ? That man is merely a part of Nature, the puppet of circumstances and here- ditary tendencies ? That brute competition is the one law of his life ? That he is doomed for ever to be the slave of his own needs, enforced by an internecine struggle for existence ? God forbid. I believe not only in Nature, but in Grace. I believe that this is man's fate only as long as he sows to the flesh, and of the flesh reaps corruption. I believe that if he will Strive upward, working out the beast, And let the ape and tiger die ; if he will be even as wise as the social animals ; as the ant and the bee, who have risen, if not to the -virtue of 326 THE NATURAL THEOLOGY OF THE FUTURE, [xm. all-embracing charity, at least to the virtues of self- sacrifice and patriotism,* then he will rise towards a higher sphere ; toward that kingdom of God of which it is written : " He that dwelleth in love, dwelleth in God, and God in him." Whether that be matter of natural theology, I cannot tell as yet. But as for all the former questions — all that St. Paul means when he talks of the law, and how the works of the flesh bring men under the law, stern and terrible and destructive, though holy and just and good, — they are matter of natural theology; and I believe that on them, as elsewhere, * I am well aw|ire what a serious question is opened up in these words. The fact that the great majority of workers among the social insects are barren females or nuns, devoting themselves to the care of other individuals' offspring, by an act of self-sacrifice, and that by means of that self-sacrifice these communities grow large and prosperous, ought to be well weighed just now ; both by those who hold that morality has been evolved from perceptions of what was useful or pleasurable, and by those who hold as I do that morality is one, immutable and eternal. Those who take the former view (confounding, as Mr. Mivart well points out in his Genesis of Species, "material" and "formal" morality) have no difficulty in tracing the germs of the highest human morality in animals ; for self-interest is, in their eyes, the ultimate ground of morality, and the average animal is utterly selfish. But certain animals perform acts, as in the case of working bees and ants, and (as I hold) in the case of mothers working for and protecting their offspring, which at least seem formally moral; because they seem founded on self -sacrifice. I am well aware, I say again, of the very serious admissions which we clergymen should have to make if we confessed that these acts really are that which they seem to be. But I do not see why we should not be as just to an ant as to a human being ; I am ready, with Socrates, to follow the Logos whithersoever it leads ; and I hope that Mr. Mivart will reconsider the two latter paragraphs of p. 196, and let his " thoughts play freely " round this curious subject. Perhaps, in so doing, he may lay his hand on an even sharper weapon than those which lie has already used against the sensationalist theory of morals. xm.] MARKS OF DESIGN. 327 Scripture and science will be ultimately found to coincide. But here we have to face an objection which you will often hear now from scientific men, and still oftener from non-scientific men ; who will say : It matters not to us whether Scripture contradicts or does not contradict a scientific natural theology ; for we hold such a science to be impossible and naught. The old Jews put a God into Nature, and therefore of course they could see, as you see, what they had already put there. But we see no God in Nature. We do not deny the existence of a God ; we merely say that scientific research does not reveal Him to us. We see no marks of design in physical phenomena. What used to be considered as marks of design can be better explained by considering them as the results of evolution according to necessary laws ; and you and Scripture make a mere assumption when you ascribe them to the operation of a mind like the human mind. Now, on this point I believe we may answer fear- lessly : If you cannot see it we cannot help you. If the heavens do not declare to you the glory of God, nor the firmament show you His handy-work, then our poor arguments about them will not show it. "The eye can only see that which it brings with it the power of seeing." We can only reassert that we see design everywhere, and that the vast majority of the human race in every age and clime has seen it. Analogy from experience, sound induction (as we hold) from the works not only of . men but of animals, has made it an all but self-evident truth to us, that wherever there is arrangement, there must • be an 328 THE NATURAL THEOLOGY OF THE FUTURE, [xm. arranger; wherever there is adaptation of means to an end, there must be an adapter ; wherever an organisation, there must be an organiser. The existence of a designing God is no more demonstrable from Nature than the existence of other human beings independent of ourselves, or, indeed, the existence of our own bodies. But, like the belief in them, the belief in Him has become an article of our common sense. And that this designing mind is, in some respects, similar to the human mind, is proved to us (as Sir John Herschel well puts it) by the mere fact that we can discover and comprehend the processes of Nature. But here again, if we be contradicted, we can only reassert. If the old words, " He that made the eye, shall He not see ? He that planted the ear, shall He not hear ?" do not at once commend themselves to the intellect of any person, we shall never convince that person by any arguments drawn from the absurdity of conceiving the invention of optics by a blind race, or of music by a deaf one. So we will assert our own old-fashioned notion boldly ; and more : we will say, in spite of ridicule, that if such a God exists, final causes must exist also. That the whole universe must be one chain of final causes. That if there be a Supreme Reason, He must have a reason, and that a good reason, for every physical phenomenon. We will tell the modern scientific man — You are nervously afraid of the mention of final causes. You quote against them Bacon's saying, that they are barren virgins; that no physical fact was ever dis- covered or explained by them. You are right as far as xiii.] FINAL CAUSES. / / . S*9 f f , * / ' regards yourselves ; you have no busi^ss, witn 'filial causes, because final causes are moral causea^And you/ ' ; are physical students only. We, the natural theolo- gians, have business with them. Your duty is to find out the How of things ; ours, to find out the Why. If you rejoin that we shall never find out the Why, unless we first learn something of the How, we shall not deny that. It may be most useful, I had almost said neces- sary, that the clergy should have some scientific train- ing. It may be most useful, I sometimes dream of a day when it will be considered necessary, that every candidate for ordination should be required to have passed creditably in at least one branch of physical science, if it be only to teach him the method of sound scientific thought. But our having learnt the How, will not make it needless, much less impossible, for us to study the Why. It will merely make more clear to us the things of which we have to study the Why; and enable us to keep the How and the Why more religiously apart from each other. But if it be said : After all, there is no Why ; the doctrine of evolution, by doing away with the theory of creation, does away with that of final causes — let us answer, boldly : Not in the least. We might accept all that Mr. Darwin, all that Professor Huxley, has so learnedly and so acutely written on physical science, and yet preserve our natural theology on exactly the same basis as that on which Butler and Paley left it. That we should have to develop it, I do not deny. That we should have to relinquish it, I do. Let me press this thought earnestly on you. I know that many wiser and better men than I have fears on this point. I cannot share in them. 330 THE NATURAL THEOLOGY OF THE FUTURE, [xm. All, it seems to me, that the new doctrines of Evolu- tion demand is this. We ail agree, for the fact is patent, that our own bodies, and indeed the body of every living creature, are evolved from a seemingly simple germ by natural laws, without visible action of any designing will or mind, into the full organisation of a human or other creature. Yet we do not say, on that account : God did not create me ; I only grew. We hold in this case to our old idea, and say : If there be evolution, there must be an evolver. Now the new physical theories only ask us, it seems to me, to extend this conception to the whole universe : to believe that not individuals merely, but whole varieties and races, the total organised life on this planet, and it may be the total organisation of the universe, have been evolved just as our bodies are, by natural laws acting through circumstance. This may be true, or may be false. But all its truth can do to the natural theolo- gian will be to make him believe that the Creator bears the same relation to the whole universe as that Creator undeniably bears to every individual human body. I entreat you to weigh these words, which have not been written in haste ; and I entreat you also, if you wish to see how little the new theory, that species may have been gradually created by variation, natural selection, and so forth, interferes with the old theory of design, contrivance, and adaptation, nay, with the fullest admission of benevolent final causes — I entreat you, I say, to study Darwin's " Fertilisation of Orchids " — a book which (whether his main theory be true or not) will still remain a most valuable addition to natural theology. XIIL] LAW OF NATUKAL SELECTION. 331 For suppose, gentlemen, that all the species of Orchids, and not only they, but their congeners — the Gingers, the Arrowroots, the Bananas — are all the descendants of one original form, which was most probably nearly allied to the Snowdrop and the Iris. What then ? Would that be one whit more wonderful, more unworthy of the wisdom and power of God, than if they were, as most believe, created each and all at once, with their minute and often imaginary shades of difference ? What would the natural theologian have to say, were the first theory true, save that God's works are even more wonderful than he always believed them to be ? As for the theory being impossible : we must leave the discussion of that to physical students. It is not for us clergymen to limit the power of God. "Is anything too hard for the Lord ? " asked the prophet of old : and we have a right to ask it as long as time shall last. If it be said that natural selection is too simple a cause to produce such fantastic variety : that, again, is a question to be settled exclusively by physical students. All we have to say on the matter is, that we always knew that God works by very simple, or seemingly simple, means ; that the whole universe, as far as we could discern it, was one concatenation of the most simple means ; that it was wonderful, yea, miraculous in our eyes, that a child should resemble its parents, that the rain- drops should make the grass grow, that the grass should become flesh, and the flesh sustenance for the thinking brain of man. Ought God to seem less or more august in our eyes, when we are told that His means are even more simple than we supposed ? We held Him to be Almighty and Allwise. Are we to 332 THE NATUEAL THEOLOGY OF THE FUTUEE. [xin. reverence Him less or more,, if we hear that His might is greater. His wisdom deeper, than we ever dreamed ? We believed that His care was over all His works ; that His Providence watched perpetually over the whole universe. We were taught — some of us at least — by Holy Scripture, to believe that the whole history of the universe was made up of special Providences. If, then, that should be true which Mr. Darwin writes : " It may be metaphorically said that natural selection is daily and hourly scrutinising throughout the world, every variation, even the slightest; reject- ing that which is bad, preserving and adding up that which is good, silently and incessantly working when- ever and wherever opportunity offers at the improve- ment of every organic being" — if that, I say, were proven to be true, ought God's care and God^s provi- dence to seem less or more magnificent in our eyes ? Of old it was said by Him without whom nothing is made: "My Father worketh hitherto, and I work." Shall we quarrel with Science if she should show how those words are true ? What, in one word, should we have to say but this ? — We knew of old that God was so wise that He could make all things ; but behold, He is so much wiser than even that, that He can make all things make themselves. But it may be said : These notions are contrary to Scripture. I must beg very humbly, but very firmly, to demur to that opinion. Scripture says that God created. But it nowhere defines that term. The means, the How of Creation, is nowhere specified. Scripture, again, says that organised beings were produced each according to their kind. But it no- where defines that term. What a kind includes, xm.] THE ABSENT GOD OF A DEAD UNIVERSE. 333 whether it includes or not the capacity of varying (which is just the question in point), is nowhere specified. And I think it a most important rule in scriptural exegesis, to be most cautious as to limiting the meaning of any term which Scripture itself has not limited, lest we find ourselves putting into the teaching of Scripture our own human theories or prejudices. And consider, Is not man a kind ? And has not man- kind varied, physically, intellectually, spiritually ? Is not the Bible, from beginning to end, a history of the variations of mankind, for worse or for better, from their original type ? Let us rather look with calmness, and even with hope and good will, on these new theories ; for, correct or incorrect, they surely mark a tendency toward a more, not a less, scriptural view of nature. Are they not attempts, whether successful or unsuccessful, to escape from that shallow mechanical notion of the universe and its Creator which was too much in vogue in the eighteenth century among divines as well as philo- sophers; the theory which Goethe (to do him justice), and after him Mr. Thomas Carlyle, have treated with such noble scorn ; the theory, I mean, that God has wound up the universe like a clock, and left it to tick by itself till it runs down, never troubling Himself with it, save possibly — for even that was only half believed — by rare miraculous interferences with the laws which He Himself had made ? Out of that chilling dream of a dead universe ungoverned by an absent God, the human mind, in Germany especially, tried during the early part of this century to escape by strange roads ; roads by which there was no escape, because they were not laid down on the firm ground of scientific 334 THE NATUEAL THEOLOGY OF THE FUTURE, [xin. facts. Then, in despair, men turned to the facts which they had neglected, and said : We are weary of philo- sophy ; we will study you, and you alone. As for God, who can find Him ? And they have worked at the facts like gallant and honest men ; and their work, like all good work, has produced, in the last fifty years, results more enormous than they even dreamed. But what are they finding, more and more, below their facts, below all phenomena which the scalpel and the microscope can show ? A something nameless, in- visible, imponderable, yet seemingly omnipresent and omnipotent, retreating before them deeper and deeper, the deeper they delve : namely, the life which shapes and makes — that which the old school-men called " forma formativa," which they call vital force and what not — metaphors all, or rather counters to mark an unknown quantity, as if they should call it x or y. One says : It is all vibrations ; but his reason, unsatis- fied, asks : And what makes the vibrations vibrate ? Another : It is all physiological units ; but his reason asks : What is the " physis/' the nature and " innate tendency " of the units ? A third : It may be all caused by infinitely numerous "gemmules;" but his reason asks him : What puts infinite order into these gemmules, instead of infinite anarchy ? I mention these theories not to laugh at them. No man has a deeper respect for those who have put them forth. Nor would it interfere with my theological creed, if any or all of them were proven to be true to-morrow. I mention them only to show that beneath all these theories — true or false — still lies the unknown a?. Scientific men are becoming more and more aware of it ; I had almost said ready to worship it. More and xiii.] LIFE THE BREATH OF GOD. 335 more the noblest-minded of them are engrossed by the mystery of that unknown and truly miraculous element in Nature, which is always escaping them, though they cannot escape it. How should they escape it? Was it not written of old: " Whither shall I go from Thy presence, or whither shall I flee from Thy spirit?" Ah that we clergy would summon up courage to tell them that ! Courage to tell them — what need not hamper for a moment the freedom of their investiga- tions, what will add to them a sanction, I may say a sanctity — that the unknown af which lies below all phenomena, which is for ever at work on all phenomena, on the whole and on every part of the whole, down to the colouring of every leaf and the curdling of every cell of protoplasm, is none other than that which the old Hebrews called — (by a metaphor, no doubt — for how can man speak of the unseen, save in metaphors drawn from the seen ? — but by the only metaphor adequate to express the perpetual and omnipresent miracle) — The Breath of God ; The Spirit who is The Lord and Giver of Life. In the rest, gentlemen, let us think, and let us observe. For if we are ignorant, not merely of the results of experimental science, but of the methods thereof, then we and the men of science shall have no common ground whereon to stretch out kindly hands to each other. But let us have patience and faith; and not suppose in haste, that when those hands are stretched out it will be needful for us to leave our standing-ground, or to cast ourselves down from the pinnacle of the temple to earn popularity; above all, from earnest 336 THE NATURAL THEOLOGY OF THE FUTURE, [xm. students who are too high-minded to care for popu- larity themselves. True, if we have an intelligent belief in those Creeds and those Scriptures which are committed to our keeping, then our philosophy cannot be that which is just now in vogue. But all we have to do, I believe, is to wait. Nominalism, and that " Sensationalism " which has sprung from nominalism, are running fast to seed ; Comtism seems to me its supreme effort : after which the whirligig of Time may bring round its revenges ; and Realism, and we who own the Realist creeds, may have our turn. Only wait. When a grave, able, and authoritative philosopher explains a mother's love of her newborn babe, as Professor Bain has done, in a really eloquent passage of his book on the "Emotions and the Will" (Second Edition, pp. 78, 79), then the end of that philosophy is very near; and an older, simpler, more human, and, as I hold, more philosophic explanation of that natural phenomenon, and of all others, may get a hearing. Only wait ; and fret not yourselves, else shall you be moved to do evil. Remember the saying of the wise man : ' ' Go not after the world. She turns on her axis j and if thou stand still long enough she will turn round to thee." THE END. CHABLES DICKENS AND EVANS, CBYSTAL PALACE PEESS. MESSRS. 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