clxxviii 



sender should give some statement of the circumstances under 

 which they wei'e found, as it was impossible for the most scien- 

 tific to judge of the species of the animal, or to decide whether 

 the teeth were those of one animal or more than one. The Sec- 

 retary was accordingly requested to address a note to Dr. Ten- 

 nant desiring further information. 



A daguerreotype of a flash of lightning, taken June 18, 1847, 

 was received from the artist, Mr. T. M. Easterly, to whom the 

 thanks of the Society were returned. 



Dr. Galney was appointed to fill the place of Dr. Schmidt in 

 the Board of Curators, recently made vacant by resignation. 



May 3, 1875. 

 W. T. Harris, President, in the chair. 



On account of Mr. Riley's absence, Wm. McLellan was chosen 

 Secretary fro tern. 



Thirteen members present. 



The Library Committee reported progress. 



Communications were then read by the Corresponding Secre- 

 tary, and several publications were laid upon the table, among 

 which were the Proceedings of the "Sociedad Mexicana de His- 

 toria Natural," Mexico. 



A letter was read from Senor Antonio del Castillo, of Mexico, 

 acknowledging his election as a Corresponding Member of the 

 Academy. 



On motion of the Corr. Sec, the " Rantoul Literary Society," 

 of Rantoul, Ills., from which a copy of Proceedings had been 

 received, was placed on the list of exchanges. 



Dr. Stevens read a communication on Intermittent Fever, from 

 Mr. Amos Sawyer, of Hillsboro, Ills. In this paper the " spore" 

 theory was advocated, and it was claimed that a moist soil and 

 solar heat in the presence of carbonic acid were the principal 

 generating agencies. 



These views were characterized by Dr. Engelmann and Dr. 

 Briggs as speculative and non-scientific, and it was voted to de- 

 posit the paper in the archives. 



