The undersigned, contemplating expensive arrangements for 

 the enlargement pfiJiis collection, will supply suites of 



TERT:yjllY AND CRETACEOUS FOSSILS, 



AND. ALSO OF 

 LAND AND FRESH-WATER SHELLS 



Of Alabama and adjacent States, at the rate of 30 cents a species, 

 averaging six specimens to each species ; representing, when prac- 

 ticable, the different*ages of the land and fresh -water shells. 



The more ponderous fossils will be represented by single speci- 

 mens, or by pairs. 



For further particulars communications are invited. 



E. R. SHOWALTER, 



t^NIONTOWN, ALABAMA. 



^'^'sTVorK.s 030. isra.t\xz-e.l EClst 01-37-^ 



FOR SALE OR EXCHANGE. 



. «»■»> 



The following BOOKS, duplicates in my Library, are offered 

 For Sale at the annexed prices, or will be Exchanged for Con- 

 chological Works. GEORGE W. TRYON, Jr., 



No. 625 Market Street, Philadelphia. 



NATURAL HISTORY OF NEW YORK, 19 Vols., 4to., newly bound in half Morocco, with many 



hundred Colored Plates ^12.j 00 



The following separate Volumes also for sale, in the same binding : 



MAMMALIA. By J. E DeKay. 33 colored plates 5(10 



ORNITHOLOGY. By .1. E DeKay. .SSOop., 141 colored plate,'* '.' 9o oo 



HERPETOI.OGY AND ICHTHYOLOGY. By J. E. DeKay. 2 Vols., 400, .p: text, 101 colored 



plate' 18 00 



ENTOMOLOGY. HyE. EnimoQS. 272pp,. 47 colored plates 7 50 



AGRinULTURE. By E. Emmons. SVols, 770pp, 140 colored plates of Fruits, Vegetables &c* 26 00 



botany:. By,I.Torrpy. 2 Vcjs., 1000pp., 160 colored plates '. 2-5 00 



GKOLOGY. 4 Vols., 1900pp , ovfer 2011 plates and maps .' 9., oo 



MINERALOGY. By L C. Beck. 550pp "g 00 



CUVIER. RE(;NE ANIMAL. Vol. t, MAM.MALIA, AVriS. 8vo , oDOpp , 1817 ...'. 1 --0 



CKUiSTACEANS, INSKCTS. &c S4,'pp.,lSI7 ^ ^vv , .... ^ ^_ 



LINN^US SYST. NAT. 13th Edit. MAMMALIA, AVES. Svo., lOSiop 1788 1 7i 



AMPHIBIA, PISCES. .iOOpp.,1788 i 50 



INSECT A. 2Vols., l.iOnpp, 178S... sio 



MINERALS. 47.ipp.1793 ' ',00 



BROT. CATALOGUE SYSTEM\T DE> MELANIANS. Svo 72pp fieueVa'is'i-' 100 



COUTHUOY, J. P., DESCRIPTIONS OF NKW SPECIES OF SHELLS OF MASSACIIUSETTS 



BAY, JIO - OGRAPH OF OSTEODESM.\CEA, &c USpp.. Svo 3 plates 1 7i 



MIGHELS,.T W., CATALOGUE OF THE SHELLS OP MAINE Svo 40pp. lSt3 75 



ENCYCLOPEDIE METHODIQUE. Zoophyte.s. By Lamouroux, St. Vincent and' "Deslon- 



champs. 4to , 1824. 2 Vols., 8l)0pp. text, 100 plates ; 15 00 



GRAY, LES.SONS IN BOTANY 8vo., cloth. 18.J9 50 



BOTANY OF NORTHERN UNITED STATES, including m6ssV:S,&V." sVo^halV Mo- 



ricco,18<S 1 go 



GR.\Y, ST RUCTUll ALAND SYS TE.MATIC BOTANY. sVo'ThalV MoIocco*'Vs-is".".'.V'V''.'.' 1 00 



\t . . 



