Missouri Botanical Garden PETER H. RAVEN LIBRARY Pagination Note: Since many of the items lack a specific page number, the page number displayed online refers to the sequentially created number each item was given upon cataloging the materials. |ft m / jg » ^ ifjf Missouri Botanical GardEW George Engeuiatjn Papers- • . B ■ Botanical cm copyright reserved garden Missouri Botanic George Emgeu^ p/y?'6f# 5 It B y B u □ y 0 1 2 3 4 5 6 7 8 9 10 cm copyright reserved Ml SSOU R I BOTAN ICAL G A R D E N Botanical cm copyright reserved garden 1000 0 1 2 3 4 5 6'. 7-8 9 10 Missouri • . . ■ Botanical cm copyright reserved garden ^4 q /x6r tf S ^ ^ 7 -e— ** Pirti+n x 4/ S' O 0 Ot ill) ✓ /, r&f^~~^~ C%~ 2Z~#u%, * /7W" . ^ ■^- V^ r '^ — c/2 C * 2^2,/^/ 1002 6^6^X t ^**J*Ayu f^' +- y' MJZ££e2‘ -*K «• . '- /^f 01 23456789 10 Missouri Botanical cm copyright reserved garden SHUMARD — NEW PALAEOZOIC FOSSILS. 113 El^jacrinus Kirkwoodensis, n. sp. Body very small, subglobose, a little longer than wide, flat- tened above and below. Basal pieces very gently concave, with thpir edges on a level with the plane of the under side. Radial pieces (fork pieces) reaching to the base and occupy- ing more than four fifths the entire length of the body, narrow be] low and widest in the middle, sides ft gently arched. Interra- dial pieces subdeltoid, very prominent towards the apex, much longer than wide, obtusely angulated below, acutely angulated above, and notched on either side a short distance below the summit. Pseudo-ambulacral areas extending from base to summit, narrow, deeply impressed; sides nearly parallel; pore pieces amounting to about fifty in each field. A longitudinal fissure or slit extends from the central summit opening down- wards, separating the pore pieces of one side from their fel- lows of the opposite for the distance of about one fifth the length of the field, thence their inner edges are united in the median line to the base. Pseudo-ambulacral spaces lanceo- late, sloping gently from their edges to the sutures. Ovarial apertures eight, very minute, situated at the notches of the interradial plates. Anal opening large, circular or very slight- ly elliptical. The surface markings are not plainly exhibited in any of the specimens I have collected of this species. On several of them I observe, more or less distinctly, irregular , coarse rugse ( or pittings, which, howeyer, may be due to weath- Dimensions. — Length, 0.20 of an inch ; width, 0.18. The JElceacrinus Kirkwoodensis is nearly allied to K. ( Pentremites ) melo , from which it is distinguished by its much smaller size and less deeply excavated base. It also occupies a higher geological position. Occurs in the St. Louis Limestone (Carboniferous) on the Pacific railroad, near Kirkwood, St. Louis county, Missouri. 8 7 8 9 10 Missouri . Botanical copyright reserved garden TRANS. OP TJIB ACAD. OP SCIENCE. ,x k 114 ^ Topaz in Utah . By Henry Engelmaot. Curing my explorations in Utah as Geologist of the Expe- ' j dition under Capt. J. H. Simpson, Top. Eng’rs. U. S. A., in 1858 and 1859, 1 observed some remarkably beautiful crys- tals of Topaz among some detritus of trachytic porphyry, t They were perfectly colorless, transparent, sharply devel- X oped, and of great lustre. They were all short columnar. X lail gest of them measured scarcely one third of an inch in the direction of the basal cleaVage, which was highly per- fect. I. observed ten modifications : all crystals exhibited s 'according to Prof. Rose’s designation) d c : b : a r go c : b : 2 a , c : oo b : : *oo a 1 , 4 c : b : qo a , 2 c : b : a ; nost of them also 2 c : b : oo a , ' ; b : a ; - few only 2 c : op'b : a , and 4 (?) c : b : a . As in none of the crystals were both ends developed, I ould not ascertain whether they were liemihedral, as is most common with topaz. The hardness of the mineral is ==8. It is infusible before the blowpipe; and when strongly heated is coated with small blisters, but does not show any change of color. It exhibits the reactions of fluorine, alumina, and silex. No tests were made for other elements, nor were the ^ y T e/t^i^d life |^ol a rlza- ^ The local ity^of the mineral is near lift. 89° 40', long. 113? ; '30'^est of^feen wich;' west of. south of Salt Lake,' in Thon\- ' ^ as’ range ofmountains, on Capt. Simpson’s return trail. Cir- cumstances prevented me from obtaining more than a few cry stals r which are now deposited in the collection of the Smithsonian Institute ; a few others are also in the tianjjs -of members of the party. We were travelling at the time by forced night marches with nearly worn out animals^ seeing to gain a spfihg pf water in a distant range of mountains. This desert wa^^en entirely unexplored. I have but little doubt that more mteresting materials are to be found at the same point. The mountains of the former Territory of Utah promisj^a rich yield to the mineralogist. We know already of gold and silver ores in the east, west and south part of that*district ; of copper and lead ores in the south, and I have discovered the latter also in the centre of it ; of specular iron ,-ores and native sulphur in the Rocky Mountains and near Ljttle S'aft Lake ; of rock salt in the mountains south-east of Ujfcah Lake; of native alum near Salt Lake; of various other salts inihe deserts ; and of silicates, composing the granites, pbrphyiaes, diorites, trachytes, and lavas, nearly over the whole area!** Missouri »Bot*nic George Engeuma ARDCTT \PER5 ' • . . • Botanical cm copyright reserved garden fib? /tcrrs/* : 1003 / ^/<^ «< >/r^ , < 9 ^ Cc/y &Z^ ' y$<- 4:<« : ^£* >./,/, 1 C 05 ' ■ 00 •< 7 ~v K^/r 4 . • .-■■■■• / - -- ^krn*it '■■'■ '■- f' 0 -(JZ~l : ,c/q . ’ 2 ,w : .": ;r f 1 ^ V - ’*" s. : / ''^v. ; /$X> jjj ■ f A'r*r^ | V • vr,// .;} 1) ^ <> J ^k\ *-/■ f--—^-/ vV:' W jCl'hr^ ! / ^-j / ;> 0 1 2 3 4 5 6 7 8 9 10 cm copyright reserved Missouri Botan ical G A R D E N ■ ■' / " ■' ■■ / ,, St*,,,,,,.* 3~ a . ‘ - tfr fty If ^ q &-)■:■ 1006 01 23456789 10 m.ssoui Botanic/ cm copyright reserved Garde BOTAN ICAL cm copyright reserved garde 1007 - -r. //„T >. - ‘ ^ r :4 rt . v ^ 0.0 rt, ~ Ofc «JL X/0 100 8 01 234 5 6789 10 Missouri Botanical cm copyright reserved garden 0 cm 7 8 9 10 copyright reserved Missouri Botanical Garden 01 234567 89 10 Missouri Botanical cm copyright reserved garden cm copyrigl 1012 copyright reserved copyright reserved