146 



Lettre a M. Ph. Fr. de Siebold, sur les Collections Ethno- 

 graphiques, &c. 8vo pamph. Paris, 1845. From M. Jomard. 



Seconde Note sur une Pierre Gravee trouvee dans un ancien 

 tumulus Americain. 8vo pamph. Paris, 1845. From same. 



Annual Report of the Regents of the University of New York, 

 for 1846. Albany, 1846. From the Regents. 



Storer, D. H., M. D. Synopsis of the Fishes of North Amer- 

 ica. 4to. Boston, 1846. From the Author. 



June 17, 1846. 



C. T. Jackson, M. D., in the Chair. 



Mr. John E. Teschemacher read a paper on Fossil vege- 

 tation, and particularly on that of the coal formations of 

 North America. 



He applied to this subject the discoveries of Liebig, of Dumas, 

 and Boussingauli, in which the atmosphere is considered as the 

 connecting link between vegetables and animals, the former be- 

 ing the reducing, the latter the consuming force, and argued that 

 the existence of the vegetable as coal, proved the non-existence 

 of the consuming force or animals, and also showed the proba- 

 bility of a different atmosphere at that period. 



He stated the importance of collecting the fossil vegetation of 

 this continent, and comparing it with that of the other continents, 

 in order to establish a uniformity of vegetation, and with it a uni- 

 formity of climate for its growth; connecting with this the fourth 

 law of Professor Pictet, on the distribution of animal fossil re- 

 mains, tending to exhibit a gradual decrease of the area of this 

 uniformity of climate from the earliest organic existence, the 

 vegetable, through the various succeeding epochs of animal life. 



He touched on the value of the labors of Presl and J. Smith, 

 of Kew, on recent ferns, to the student of fossil filices, and on 

 the necessity which the result of further discoveries and investi- 

 gations, would produce for the amelioration of the present method 

 of arrangement of fossil vegetation. He also exhibited drawings 



