The undersigned, contemplating expensive arrangements for 

 the enlargement of his collection, will supply suites of 



TERTIARY 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 speci.s; 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, 



UNIONTOWK, ALABAMA. 



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 NFAV YORK, 19 Vols.. 4to., nearly bound inhalf Morocco, with jriany 



b w udred Colored Plates \ $1 2."> 00 



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



MAMMALIA. Ry.T.EDeKay. 33 colored plates 5 00 



ORNITHOLOGY. By J. E DeKny. .SSOup, 141 colored plates -20 oo 



HERPETOLOGY AND ICHTHYOLOGY. By J. E. DeKay. 2 Vols., 400 .p. text, 101 colored 



plates ] S 00 



ENTOMOLOGY. Hy E. Emmons. 272pp., 47 colored plntes 7 f.O 



AGRICULTUIIE. Ry E. Eiiiinona. ;^ Vols , 770pp . 140 colored plate.s of Fruits Vf'L'etf|lp|p« \-c ''GOO 



BOTANY Bv .T. Torrey. 2 Vols., 1000pp., 160 colored plate.s os 00 



GROLOGY. 4 Vols., lOOOpp . over 20(i plates and maps .t, no 



MINERALOGY By L n. Beck. 550pp ,j ,,0 



CUVIER REGNE ANIMAL. Vol. T , MAMMALIA, AVKS. 8vo , .iOOpp , 1S17 1 -.0 



CRrsTAGEANS, IXSKCTS. v<!ic S4 pp., 1817 09-, 



LINNiEUS SYST NAT. l.^lli Edit. MAMMALIA, AVES Sro.. 10.32pp , 1788 "' i" 7-, 



AMPHIBIA, PISC ES. .WOpp., 17SS 1 r,o 



1NSEi:TA. 2 Vols, l.ioiipp., 17?S 3 ,0 



M 1 N KR ALS. 47.5pp . 1 79;i , ,,0 



BROT CATALOGUE SYSTEMAT ^E^ MELANIAN-*. Svo , 72pp. Geneva. lS'i2 100 



COUTHUOY J P., DRS(^RIPTIONSOK NEW SPECIES OF SHELLS OF MASSACHU.SETTS 



BAY MO^OGRAPH OF OSTEODESMACEA, &c llSpp. 8vo. 8 plates I 7-, 



MIGHEL*;. 1" W., CATALOGUE OF THE SHELLS OF MAINE. Svo., 40iip.. ISii .,' 7.-, 



ENCYCLOPEDIE METHODIQUE. Zoophytes. By Lamouroux. St. Vincent ami no-^iop- 



champs. 4to. 182-'.. 2 Vols., 800pp. text, 100 plates 15 00 



GRAY, LESSONS IN BOTANY Svo . cloth. ISW 50 



BOTANY OF NORTHERN UNITED STATES, incliidina; MOSSES, i-c. S^-o, hulf M .- 



rocco, IS'^S 1 50 



GRAY, STRUCTURAL AND SYSTEMATIC BOTANY. Svo , half Moiocco. Ih.iS 100 



i^ 



