December 15, 1873 

 Vice-President, Dr. Geo. Engelmans, in the chair. 



Twelve members present. 



The Corresponding Secretary laid upon the table exchanges 

 and several publications received. He particularly called attention 

 to the fifth volume on the Geology of Illinois, and to the second 

 Geological Report of Missouri, giving digests of their contents. 

 In one of the Indian mounds in Illinois a large copper knife 

 had been found with a blade 14 inches long and \\ wide. It is 

 described by Foster in his work on Prehistoric Man in America. 

 Associated with it were the bones of a mastadon. In the Mis- 

 souri report were facts which showed that Silurian strata had 

 been deposited against the Iron Mountain, so that the deposit of 

 iron is older than the Silurian, and seems to carry us back to de- 

 posits analogous to the Laurentian in Canada. 



A communication from the Geographical and Statistical So- 

 ciety of Mexico was received, asking for an exchange of publica- 

 tions. The society was placed on the exchange list. 



Mr. G. C. Broadhead, State Geologist, exhibited specimens of 

 limonite, or crystalized brown hematite, found in Adair county, 

 crystalized in calcite veins in septaria. He also exhibited a fos- 

 sil fish, found in a coal vein near Knob Noster, Johnson county, 

 the only specimen found in this State. 



Judge Holmes presented, in the name of T. B. Daley, a flexible 

 strip of stone, found in North Carolina, where it is not uncom- 

 mon. It is a diamond-bearing sand-rock, and is found also in 

 Georgia, in Brazil and India. It is composed of grains of silex, 

 held together probably without any cement. 



The rest of the evening was taken up in eulogies on Professor 

 Louis Agassiz, recently deceased, by Dr. Engelmann, Judge 

 Holmes, Dr. Copes, and Mr. Riley ; and a committee, consisting 

 of Messrs. Holmes, Engelmann, and Riley, was appointed to draft 

 resolutions expressive of the sense of the Academy upon his la- 

 mented death. 



Dr. C. S. Bull was elected an associate member, and Dr. J. S. 

 Copes, of New Orleans, a corresponding member. 



