Bibliography. 193 



9. Murchison's Silurian System. — It will be gratifying to geologists 

 and naturalists generally, in this country, to learn that Mr. Murchison's 

 celebrated work, on the Silurian System, can now be had at about half the 

 price which it has heretofore been sold at in this country. We are au- 

 thorized by Mr. Murchison to offer the work to American naturalists for 

 £5 sterling. It may be had at this rate of Messrs. R. &, J. E. Taylor, 

 Red Lion Court, Fleet street, London, or more conveniently of Messrs. 

 Wiley & Putnam, 161 Broadway, New York, and 35 Paternoster Row, 

 London, for the same price, plus the duty and transit. This reduction is 

 made expressly to promote the circulation of the work in this country, 

 where the Silurian rocks hold so prominent a place, and is not extended 

 to England, where the price is as originally, £8. 



We may also state that Mr. Murchison will publish his researches in 

 Russia next summer, in a separate and extended form. 



10. The Climate of the United States and its Endemic Influences, based 

 chiefly on the records of the Medical Department and Adjutant Gener- 

 al 's office, United States Army ; by Samuel Forry, M. D. New York, 

 J. &, H. G. Langley, 1842. pp. 378, 8vo. — Dr. Forry has been long 

 known by his meritorious labors in various departments of statistics, par- 

 ticularly by his " report on the sickness and mortality in the army of the 

 United States/' and the Army Meteorological Register. In the present 

 work, advantage has been taken of the materials collected by the returns 

 from the various military posts, and also from other sources, to draw out a 

 general and comprehensive view of the climate of the United States, and 

 of North America in general. We believe this task has never been before 

 attempted, certainly not with any thing like the advantages possessed by Dr. 

 Forry. The work seems well done, and the author deserves the commen- 

 dation of all for his labors in this new and important field of investigation. 



1 1 . Boston Journal of Natural History, containing papers and com- 

 munications read before the Boston Society of Natural History. Vol. 

 IV, No. 2. Boston, C. C. Little & James Brown, 1842. pp. 128, 

 8vo. — The Journal of the Boston Society is now published with so much 

 exactness as almost to acquire the character of a regular periodical work. 

 In our 42d volume, p. 379, we gave the contents of the part of Vol. IV 

 preceding the present part. The articles in this part are as follows : 



Remarks upon Coral Formations in the Pacific, with suggestions as to 

 the causes of their absence in the same parallels of latitude on the coast 

 of South America, by Joseph P. Couthouy, continued from p. 105 : De- 

 scriptions of some of the species of Naked Air-Breathing Mollusca in- 

 habiting the United States, by Amos Binney : Additional descriptions of, 

 and observations on, the Fishes of Massachusetts, by D. Humphreys 

 Storer, M. D. : An inquiry into the distinctive characteristics of the Abo- 



Vol. xliv, No. 1.— Oct.-Dec. 1842. 25 



