Synopsis of the Course of Lectures and Instructions in Miami 

 University, &c. ; by Prof. J. W. Scott. 24mo. From the Au- 

 thor. 



Report of the Alleghany Company's Coal Lands, Maryland ; by 

 Prof. Waller R. Johnson. From the Author. 



Final Report of the Geology of New Jersey ; by Prof. Henry 

 D. Rogers. Philadelphia, 1840. 8vo. pp. 301. Two copies. 

 From the Author. 



Letters descriptive of the Bedford Springs. Philadelphia, 1836. 

 18mo. pp. 148. By and from Philip H. Nicklin. 



Prof. Amos Eaton's Geological note-book, for the Troy class of 

 1841. From the Author. 



Fifth Annual Report of the Geological Survey of Pennsylvania^ 

 by and from Prof. Henry D. Rogers, State Geologist. Harrisburg, 

 Pa. 1841. 8vo. pp. 179. 



Report on the Geological Survey of the State of Virginia, for 

 1840; by Prof. William B. Rogers, of the University of Virginia. 

 1841, 8vo. pp. 131. From the Author. 



Annual Report of the Geologist of Maryland, J. T. Ducatel, for 

 1840. 8vo. pp. 59. From the Author. 



Monograph of the Limniades of North America ; by S. S. Hal- 

 deman. No. 2, 1841. From the Author. 



Proceedings of the Academy of Natural Sciences, Philadelphia. 

 March and April, No. 1. May, 1841, No. 2. Two copies. From 

 the Society. 



H. Milne Edwards' Anatomy and Physiology, translated from the 

 French by Dr. J. F. W. Lane. Boston, 1841. 8vo. pp. 312. 

 C. C. Little and J. Brown. From the Publishers. 



Fossils from the Medial Tertiary of the United States ; by T. A. 

 Conrad. No. 2. May 7, 1840. From the Author. 



Monograpliy of the family Unionidai ; by T. A. Conrad. No. 

 12. Two copies. Philadelphia, 1840. From the Author. 



Report on the manufacture of iron, addressed to the Governor of 

 Maryland. By Prof. J. H. Alexander, Annapolis, Md. 8vo. pp. 

 270, with plates. From the Author. 



Annual Report of the State Geologists of New York, for 1840. 

 Albany, 1841, 8vo. pp. 184. From Dr. L. C. Beck. 



Observations on magnetic intensity at twenty one stations in Eu- 

 rope ; by Prof. A. D. Bache, LL. D. From the Author. 



On the perchlorate of the oxide of ethule or perchloric ether; 

 by Clark Hare, and Martin H. Boye. Philadelphia, 1841. Two 

 copies. From the Authors. 



Report on the Invertebrate Animals of Massachusetts, comprising 

 the Mollusca, Crustacea, Annelida, and Radiata, by Augustus A. 

 Gould, M. D. in accordance with an order from the Legislature by 

 the Commissioners on the Zoological and Botanical Survey of the 

 State. 8vo. pp. 373, with 15 plates. Boston, 1841. From Dr. 

 Gould. 



