No. 75.] 



Proceedings of the Academy of Natural Sciences of Philadelphia^ vol 

 4, p. 6. Mr. Ashmead on Calcareous Spar from the Rossie lead mines, 

 in New- York. 



Boston Medical and Surgical Jmcmal^ vol. 40, p. 283. Dr. Samuel 

 P. White, on the Acid springs, at Alabama, Genesee county. 



Silliman^s Journal^ new series^ vol. 8, p. 385. Professor Benj. Silli- 

 man, Jr., analysis of Munrolite, occurring at Munroe, Orange county. 



GEOLOGY AND PALEONTOLOGY. 



Silliman*s Journal, new series, vol. 7, pages 45, 218. Parallelism of 

 the Palaeozoic formations of North America with those of Europe. By 

 Ed. DeVerneuil, and translated by James Hall. 



Silliman's Journal^ N. S., vol. 7, p. 175. On the Acid Springs and 

 gypsum deposits of the Onondaga salt group. By T. S. Hunt, of the 

 Geological Survey of Canada. 



Proceedings of the American Association for the Advancement of Sci- 

 encCy 1st meeting, September, 1848, p. 135. Account of a remarkable 

 geological development in Elizabethtown, Essex county. 



Quarterly Jmmal of the Geological Society of London, vol. 2, p. 20. 

 Observations on the Caryocrinites of Mr. James Hall. 



Quarterly Journal of the Geological Society of London, vol. 4, p. 66. 

 On Trematis, a new genus, belonging to the family of the Brachio- 

 podous mollusca. By Daniel Sharpe, F. G. S. (The Orbicula terminalis 

 of Emmons and Hall is here called Trematis terminalis.) 



Quarterly Journal qf the Geological Society of London, vol. 4, p. 146. 

 Remarks on the Palaeozoic formations of the United States, contained 

 in the collection of Charles Lyell, Esq., with remarks on the compari- 

 son of the North American formations with those of Europe. By Dan- 

 iel Sharpe, F. G. S. 



Quarterly Journal of the Geological Society of London, vol. 5, p. 107. 

 On the supposed impressions in shale of the soft parts of an Ortho- 

 ceras By James Hall, foreign member of the Geological Society, State 

 Geologist of New- York, 



