620 PROCEEDINGS OP III i: AMERICAN ACADEMY 



appropriate the sum of two hundred and fifty dollars *:io0) 

 from the income of the Rumford Fund to Arthur L. Clark, of 

 Worcester, to aid in the prosecution of researches on the prop- 

 erties of vapors, near the critical point. 



W. M. Davis read a paper entitled "The Freshwater Tertiary 

 Formations of the Rocky Mountain Region." 



The following papers were presented by title: — 



Contributions from the Cryptogamic Laboratory of Harvard 

 University XLII.: Preliminary Diagnoses of New Species of 

 Laboulbciiiacea'. — II. By Roland Thaxter. 



The Driving Energy of Physico-chemical Reaction and its 

 Temperature Coeilicient. By Theodore W. Richards. 



Supplementary Note on the Chief Theorem of Lie's Theory of 

 Finite Continuous Groups. By Stephen Elmer Slocum. Pre- 

 sented by Henry Taber. 



On the Singular Transformations of Groups generated by 

 Infinitesimal Transformations. By Henry Taber. 



