a ee Fi ~e io rd 4" oot SNR A PLAN FOR AN EDUCATIONAL EXHIBIT OF FISHES #° 4. « From BULLETIN OF THE BUREAU OF FISHERIES, Volume XXVIII, 1908 Proceedings of the Fourth Internationat Fishery Congress : : Washington, 1908 WASHINGTON =: 3) t4245:/: GOVERNMENT > PRINTING OFFICE *:-: 0 20 +03 -1910. A PLAN FOR AN EDUCATIONAL Peer bil (OF PIS EES 2 ce rs From BULLETIN OF THE BUREAU OF FISHERIES, Volume XXVIII, 1908 Proceedings of the Fourth International Fishery Congress : : Washington, 1908 SS _———$——$——$—$—$—$—$—$KT€“=_— WASHINGTON : : : : : : GOVERNMENT PRINTING OFFICE : : : : : : 1910 BUREAU OF FISHERIES DOCUMENT NO. 721 Issued May, 1910 A PLAN FOR AN EDUCATIONAL EXHIBIT OF FISHES % eo By Roy W. Miner Assistant Curator, American Museum of Natural History & Paper presented before the Fourth International Fishery Congress held at Washington, U. S. A., September 22 to 26, 1908 and awarded one-half the prize of one hundred dollars in gold offered by the Museum of the Brooklyn Institute of Arts and Sciences for the best plan for an educational exhibit of fishes A PLAN FOR AN EDUCATIONAL EXHIBIT OF FISHES. w By ROY W. MINER, Assistant Curator, American Museum of Natural History. Pad An exhibit to be educational must be attractive as well as instructive; that is, its features must be so arranged as to stimulate attention, and when that is accomplished, to offer instruction that will be appreciated not only by the casually interested observer, but also by those who have come for the express purpose of learning, namely, the pupils and teachers of the public schools, university students, and others specially interested. Its lessons there- fore must be simple, direct, and systematically arranged. But when we endeavor to accomplish this end with an exhibition of fishes, certain special problems are involved. In the first place, the material is refrac- tory and difficult to prepare effectively for exhibition; in the second place, the very monotony of the fish form makes the study of arrangement a matter of special concern. The consideration of these questions will be taken up as follows: (1) The nature of the material available for exhibition will be discussed; (2) various methods for arranging and labeling the exhibit will be brought forward; (3) supplementary suggestions will be offered for rendering the exhibit instructive and attractive, and (4) the paper will close with a pro- visional list of fishes to be exhibited. The writer does not pretend that he has solved the question of fish exhi- bition, but offers these suggestions partly as the result of his attempts in this direction and partly as tentative schemes which may aid in meeting some of the difficulties. NATURE OF THE MATERIAL TO BE EXHIBITED. The material for exhibit may be (1) alcoholic specimens, (2) mounted and painted skins, (3) casts, (4) models, (5) skeletons, (6) colored plates and pho- tographs, (7) groups. (1) Alcoholic specimens should be used but sparingly, as for the most part they have little exhibition value because of distortion, shrinkage, and loss of color. A few good anatomical preparations might be used to show certain 1317 1318 BULLETIN OF THE BUREAU OF FISHERIES. peculiarities of structure (pl. cxxvm), or certain kinds of accessory material, such as sharks’ and skates’ eggs, for example, may add to the value of the exhibit. A rare and interesting form like the goblin shark (Mitsukurina owstont) might be shown, especially if placed beside a model of the living fish; but on the whole alcoholic specimens decidedly detract from the interest of the exhibit. (2) Mounted and painted skins are sometimes effective for exhibit, espe- cially with fish like the gar-pike (Lepisosteus osseus), the enameled scales of which are very successfully treated in this way. (Pl. cxxvui.) In fact, this method may be used with many forms that have close-set, substantial scales (see yellow perch, pl. cxxrx), and is especially effective in a fish of either gaudy or dark colors (e. g., the angel-fish, or the groupers). It does not, however, effectually reproduce the smooth, gleaming, iridescent body of other fishes, as the shrinkage and hardening of the drying skin and the paint that is applied obscure the original quality of the surface. Hence, painting a skin practically amounts to nothing more than painting on an inferior surface. (3) Casts, however, though but a reproduction, are faithful, if well executed, and furnish a surface much better adapted for coloring. ‘Transparent colors over a metallic silver paint may be made to give the effects of iridescence, especially with such fish as the mackerels, pompanos, and the lookdown. But even the plaster cast, no matter how well painted, nevertheless does not perfectly succeed in giving the surface bloom of the living fish. (4) Models.—Some fishes, especially the rarer forms, are hard to procure except as distorted alcoholic specimens, yet it may be desirable to represent them in the exhibit. In such cases, if sufficient data can be procured, a model may be constructed giving a restoration of the original and it may be well to exhibit the alcoholic specimen beside the model. (5) Skeletons.—The exhibit may be varied and its value greatly increased by the use of mounted skeletons of typical forms. These may be correlated by appropriate labeling so as to bring out their chief differences. (6) Colored plates taken from published works will add to the attractiveness of the exhibit and may be used to represent rare species which could not other- wise be shown. Many of these plates possess artistic beauty and represent the living fish better than any known method of artificial preparation. At the same time they portray the extraordinary variety of color and form possessed by the fishes of tropical seas. Some of these plates are shown in plate cxxx. (7) Groups.—lIt is the pictorial group, however, that calls forth the greatest display of interest on the part of the visitor. Groups are the attractive feature, the drawing card of an exhibit. In bird and mammal collections they have been employed with great success. There are, however, comparatively few fish groups, and in these the mistake is often made of producing an aquarium PLAN FOR AN EDUCATIONAL EXHIBIT OF FISHES. 1319 effect without a central point of interest. A fish or school of fish swimming among seaweed and rocks is not sufficient excuse for the time and expense incurred in producing a fish group. There must be a central idea or theme, such as the life history of some interesting species, an instance of peculiar breeding habits, or an illustration of some biological phenomenon, like adaptation, protective coloration, symbiosis, or sexual dimorphism, which can be emphasized in a descriptive label for the benefit of the visitor. Instead of being merely a spectacle, the group now has educational value; while it is the pictorial effect which at first arrests the attention of the observer, the lesson it has to teach is impressed on the mind more vividly than by any other method. (See appendix, p. 1340, for specific suggestions for these groups.) The nature of a fish exhibit is such that no one kind of material should be used to the exclusion of the rest. To show to the best advantage it should be so arranged that casts are interspersed with mounted skins, skeletons, and colored plates, while the monotony of single specimens is broken by groups at judicious intervals. METHODS OF ARRANGEMENT. In general, the synoptic or systematic arrangement is the best to follow. This is most readily effected by using single specimens in the bulk of the exhibit, which should, however, be varied with groups and accessory exhibits of a faunistic, commercial, and biological character. The synoptic series has great teaching value for the student of elementary zoology, since the orderly grouping of fishes carries with it an orderly grouping of facts readily retained by the mind. It is true that many casual visitors may not appreciate the advantages of the system, but when well arranged it sets forth, rather than obscures, the attractive and striking forms. For the benefit of such visitors the individual labels are made clear, simple, and interesting, while those placed with the groups are particularly adapted to their requirements. The student, however, needs a classification that is more in line with his studies, and this is furnished by the synoptic method. of arrangement. The classification to be followed will vary of course according to individual judgment. The writer has found that a combination of the American system of Jordan and Evermann with the English system of Boulenger is best adapted for purposes of exhibition. Valuable help in this connection has been derived from W. K. Gregory’s article on ‘‘The Orders of Teleostomous Fishes.”"* The scheme of classification will be given later in connection with the provisional list of fishes already referred to. Three methods of arranging the exhibit in the hall are offered in the present ‘paper, as follows: (1) the corridor arrangement; (2) the alcove arrangement; (3) the gallery arrangement. a Annals New York Academy of Sciences, vol. XvII, part 1, no. 3, p. 437-508, pl. XXIX-XXxX. 1320 BULLETIN OF THE BUREAU OF FISHERIES. (1) The corridor arrangement.—This method is in use in the American Museum of Natural History, where the fish exhibit is at present placed in an L-shaped corridor (text fig. 1) connecting two wings of the museum. Here the cases are placed in end-to-end series along the walls on both sides, an arrangement well adapted for this style of hall. The cases for the synoptic series are of similar size and shape, of the variety shown in plate CxXxvI. The two doors in front open outward. The back is solid and covered witha fabric (in this instance a blue denim), which sets off well the varied colors of the fishes. The specimens are attached directly to the back of the case and are removable. Nine- ¢ teen cases are used at present for the synoptic series. The main features of the arrangement and classification may be readily seen in the accompanying plates. The class Pisces is defined in a general label (pl. CXxXxI) to be found at the entrance of the hall and also at intervals throughout the exhibit. Its subdivision into three sub- classes is indicated at the bottom of the label. ‘The parts of the hall devoted to the individual subclasses are shown by the large signs suspended from the ceiling (pl. cxxxi1), while the orders are identified by Fic. 1.—Plan of fish hallin the American Museum of Natural History, illustrating the ‘‘ corridor method”’ of arranging the cases. The synoptic cases are numbered 1 to19. ‘The illustrative group cases are represented in the middle of the corridor. PLAN FOR AN EDUCATIONAL EXHIBIT OF FISHES, Po2t small white-lettered boards at the top of each case (pl. cxxxmm). Fai) | Bui. U. S. B. F., 1908. PLATE ( THE FISHES CLASS PISCES MACKEREL Fishes may be defined as jaw-bearing, back-boned animals, adapted in shape, method of breathing, and method of locomotion for an aquatic life. In shape, they 4re spindle-like, thus offering little resistan gans adapted to purity the Th he are protected esides an internal « irtilaginous or bony skelet ol spines, dent ladder is freq ¢ and aids th General label defining class Pisces. Framed copies of this label are placed mackerel at the top is drz 1in by hand A different species is repre forms near which it is p CXXXIT. PLATT Buu. U. S. B. F., 1908. uy BuUIpLo ayy *sasodand 1} popuadsus Suds ssvjoqus oy) Dt Bur. U.S. 6. Hs, 1908; Pratm CXXNIII. ORDER ser ACANTHOPTERYGIi rman a SUBORDE!. PERCESOCES ie / 8 SLEBORDER_ "Ss P SCOMBRIFORMES A typical case illustrating the arrangement of specimens and the method of indicating classification ' 7 x : ' 7 ay ; - i . ; us 7 ! . a 7 } : i i : 7 : : _ ‘a a ; . ' : 7 , i : i i : ' ¥ 7 °¥ 7 - ae? . i i : H - ' ‘ : : a a oe 7 ~ t= } - : ‘ & : ? 5 i? ' i i oa , ‘ : : : { 7 Hf + » ; 7 , oe Buu. U.S. B. F., 1908. PLATE CXXNXIV. i ORDER : ACANTHOPTERYGII ITLL A typical case with doors open, showing character of material to be used. ‘ 1 : - - ; — r ; 4 sae ae + : a on G . oe Hi si a - 7 ’ 7 . ” 7 - ! : ' ~ % - - i ear : = , r : 7 - : : es 5 io { ca : , . 7 Fi ae : 7 « ‘ = . bie - is ' Pt a i - . 2 a 7 ‘ - i 1 1 i - : : : - : 7 : 4 : = ! ‘ a 2 - : i : 7 ies : 5 ‘ : + - Es : F ; ae - e : : , - : - 7 : ’ : a - 7 : - 7 * , - 7 a : ' = - 7 : rs Pee - i + “i 7 5 a - 7 - i 7 t ek A - 7 : - : " . 7 - ' cant - a7 - 7 - . ’ 7 a oy zr - Fi ; 3 a - : 7 a - i - » + d a e é i 7 ‘ ' 7 7 - a ae a a aaa ——— = aenceeiineiials 7 in —e es - —_ ci —_— S BuL. Ul oS. Bib .; 1908. PLATE: CxO: SUBORDER SELACHII One of the shark cases. ie oe Buu. U. S. B. F., 1908. PLATE CXXXVI. ORDER. MALACOPTERYGII SUBORDER popes eM 7 SUBORDER PONDYL[ A *" 1SOSPOND) Case devoted to the trout group. The method of indicating the suborder is well shown in this figure. The case label, hanging on the front of the case, contains a definition of the suborder. + wh Bur. Ui S..B. Ey gos: PLATE CXXXVII. LIZARD FISHES Family Srnooomno€ PIKES Family Lucuoe NEEDLE-FISHES Family Boma FLYING-FISHES: Facolty Execanea A portion of the case devoted to the Haplomi, illustrating the use of family labels and the method of separating the families by means of strips of tape. CXC VELL. PATI Bur: Us. -B, F.; 1908. VAGIONVDOIDAD = wareomns »y OF SUSMIOAdS 95 ) varsovon. oy FUT UIA JA WVOIy CXXXIX. PLATE *YDIANS JO[OI-19JUM Aq pazwaysnypL ‘Pquy-ayy vAurquosap paquy jo od.AL, “soaa sv Apaary sv Ayyu wedde ‘932s AAYoL S}t satunsos pur sodiowo ysy oy} wool WU U UL dye, UL paoeyd uoy A pur ‘volun puy purpsusy 0} payiodsuesy puv sx0{q OJUL IND UDoq UDO sLY say qt YOryA UL pntu ayy ‘uoIpuos siyy UL st Ysy-Sun-y oyy apy Ay “poyIUUOD APSO Ssafqhop st yt Yor Jo ssoysaouV OUI Yas ‘suriqiqduy oyy Yip tty Sur worq ‘ops yuvuOp v ul uosvas Aap oy} ssud oy poyqeuo st jeunuy oy, snyy “APAVI-DUN] ayy YW Suyoouuoo puv adopaauo oyy YI SNONUUOS PEULIO} SL oqnz AoLIvU v puL ‘Yysy oy Jo YINoW OU} WW Yo] St UdadMoy ‘Suruodo |peus yy ‘odopaaua ax1]-u00909 v WHO 0) Suapiey pu ‘Apoq szt SdaAo09 AJasqud YyotyAM 9dULIs “qs sno Ue aH spuvyps-urys SY WOlf, SOjJoII0S wou i ‘OuNSY OY] UL UMOYs Sv dd sjlod pure ‘pnut 947 our UMOP SOYOUL g1 yNOGe sModNG J poUULYD JaAL oYyy Bunjoas JO pvajsul ‘pases stozeav oy} sv ‘uosvas Aap ayy ul gnge “ysy Aavuipto Luv axl] sa s}t jo suvout Aq Fuiyyoiq pue pooy tof Sulypoivos yur oy} Sugpe soysavur ay} noqu suuas }I pooy jo aw, 94} Sunn] lw sO AdywM UL AOYI oYwosq OF a]qe st 4 ‘s{[LS puv sduny yioq sossossod o9.njvais. snolino siyy sy “uns 94} UL dyLq OF syuLq oy Suoye syey-pnwe ayy yor pue papaoa DALY SIAL QSOY] JO St9}VAX 9X Udy UOSeaS Atp oY] spuads (sxtagfofosT) OSU PUL PINE ayI JO Ysy-BunrzT oy yoryar UL dou oY} SMoYys UOnRAYSN{L Sururdwosaw oy] HSIS-ONNT NVOINSY AHL JO LIGVH ONIMONUNA Buu. U. S. B. F., 1908. PLATE CXL BOO ere ae oe ~~ v ne TS pat a : ee es pre, Method of treating small fishes. ‘The photograph is actual size. CXLI. a Y S. B. F., 1908. PLAT! Bun. sUe ‘uattads a[Suls v Sujunowr jo poyzout y 3477-103 Lot 21 ye - ot LIBRARY OF CONGRESS I