ical changes taking place upon the 

 earth. 



The mere absence of a force (i. e. 

 nothing) accounts for nothing. 



In the new interpretations of the 

 great forces which must surely come, 

 and at an early day, cold will be awarded 

 a position more in accordance with its 

 deserts, equal place among the recog- 

 nized forces. 



When the immutable law of conser- 

 vation shall be applied to the investiga- 

 tion of those great forces, and shall be 

 made the criterion by which to judge 

 each one of them, its character, and 

 mode of operation, a new era in the his- 

 tory of science, and in the develope- 

 ment of human knowledge will have 

 been attained. 



Dunkirk, N. Y., December, 1879. 



