546 
25. Sai/ , Thomas. Descriptions of some new tcrrostrial and fluviatilo 
shells oriNoiih America 1829 — 31. Ne» Harmon;)' iHU), in 8". J)c la 
part (le l'auteur. 
■2(î. Gould , Aujj. A. Monograph of Iho specios of the {çenus Pupa found 
in the nniled Slalcs. Boston i84.*l, in 8°. De la part de l'aiiieur. 
27. Bailey , J. W. Notes on the Algae of the iinited Slalcs. New Haven 
18?(), in 8°. De la part de l'auteur. 
28. Remarks made al the annnal mecling^ of the Boston Society of natn- 
ral history Junc 2, 1845. Boston 184".>,ln 8°. J)e la part de Mr. Sam. 
Morton de Philadelphie. 
29. SuUivanf , W. S. Musci Alleghanienses , fascis 1 , 2. Columhus in 
Ohionc 18Î5, in S°. De la part de Mr. Sam. Morton de Philadelphie. 
30. Morton , Sam. G. A memoir of William Maclure. Second édition. 
Philadelphia ISi'i, in 8°. De la part de l'auteur. 
'^i. Cooper , C. Campb. Identitics of light and heal, of calorie and elec- 
tricily. Philadelphia 1848, in 8°. De la part de l'auteur. 
32. Reports of the Smithsonian Institution. Prcsented lo congress 
February 19 , 1849. Washington 1849, in 8°. De la part de l'Institut 
Smithson de Washington. 
33. Proceedings of the american antiquarian Society. October 23, 1849. 
Cambridge 1850, in 8°. De la part de Mr. Sam. Morton de Philadelphie. 
IVt.Braun, Alex, and Engelmanns y G. North american Equlseta. 1843, 
in 8°. De la part de Mr, Morton de Philadelphie. 
Bibliographical notices, in 8°. De la part de Mr. S. Morton de 
Philadelphie. 
36. Gibbes , Rob. W. Description of the teeth of a new fossil animal 
found in the Green Sand of South Carolina. 1845 , in 8°. De la part 
de Mr. S. Morton. 
37. The chemistry of végétation from the north american Review. 
January 1845, in 8°. De la part de Mr. S. Morton. 
38. Gould , Aug. A. Expédition shells. Boston 1846, in 8°. De la part de 
Mr. Sam. Morton de Philadelphie. 
39. Engelmann, G. Monography of the North American Cuscutineae, in 8°. 
De la part de Mr. S. Morton. 
40. Gray , Asa. Notes of a botanical excursion to the mountains of North 
Carolina, in 8". De la part de Mr. S. Morton. 
41. Notices of european Herbaria. 1840, in S\ De la part de Mr. Sam. 
Morton. 
