THE 



AMERICAN NATURALIST 



Vol. XLIX Jane, 1915 No. 582 



THE SIGNIFICANCE OF CERTAIN INTERNAL 

 CONDITIONS OF THE ORGANISM IN 

 ORGANIC EVOLUTION 



Fiest Paper. The Regulation of the Physico-Chem- 

 ical Conditions of the Organism 1 



F. H. PIKE AND E. L. SCOTT 

 Department of Physiology, Columbia University 

 L Introduction. 



II. The general constancy of internal conditions in the higher organisms. 



1. Applications of Van't Hoff's law. 



3. Stimulation in terms of chemical equilibrium. 

 V. General considerations and summary. 



The desirability of an attack on the general problems 

 of evolution from the point of view of physiology, as well 

 as the general deficiency of literature in physiology bear- 



ment of Science, December 30, 1914. 



321 



