152 MINUTES OF MEETINGS. 



Cleveland, February 5, 1858. 



The Academy met at their rooms in the Medical College, 

 Col. Charles Whittlesey in the chair. 



A specimen of a copper tool, supposed to have been 

 used as an axe, was received from Prof. Kirtland. It was 

 discovered in a mound, at Columbus, along with several 

 others, and resembled tools of the same kind that are 

 occasionally exhumed in digging into the ancient works of 

 the mound builders. 



Col. Whittlesey remarked that all the specimens he had 

 ever seen appear to be identical in origin, and that the 

 copper is evidently that of Lake Superior. It has the 

 small spots of native silver, so peculiar to the copper of 

 that region. This also proves that the ancient people 

 were ignorant of the fusibility of that metal, for had it 

 been melted, the silver would have formed an alloy with 

 the copper. These tools were therefore cut and hammered 

 out of pieces of native copper that were near the size and 

 form required. 



Prof. Jehu Brainerd made some observations on the 

 expansibility of gases, based upon the supposed condition 

 of their atoms. 



On motion, Hudson Tuttle, of Berlin, Erie county, Ohio, 

 was elected a member. 



The meeting then adjourned for two weeks. 



John Kirkpatrick, Sec^y. 



Cleveland, February 19, 1858. 



The Academy met pursuant to adjournment, Col. Charles 

 Whittlesey, Vice President, in the chair. 



Mr. G- A. Hyde read a paper on Meterology and the 

 great storms that pass over the United States. 



At the close of the reading of Mr. Hyde's paper, the 



