6 



The Science of Life. 



has been the parallel progress of the science of func- 

 tion or physiology. This may be diagrammatically 

 expressed. 



Form of 

 Organism. 



Activities of 

 Organism. 



Protoplasm. 



"Or we may conceive the diagram as representing a 

 double series of five shelves, on which the literature of 

 the different planes of research is disposed." 



It may seem to some that much of biology is ignored 

 in this brief sketch of morphological and physiological 

 analysis. But there are fewer omissions than there 

 seem to be. 



What of Palaeontology and Embryology, what of the 

 old-fashioned Natural History and the modern ^Etiology? 

 Taking the last first, it is hardly a department of 

 biology, it is a way of looking at all biological facts. 



