THE PHYSIOLOGY OF PLANTS. 



Physiology is the study of the activities of living 

 matter. It must therefore take account of the struc- 

 ture and properties of the living matter, called Pro- 

 toplasm, as well as of the processes which it carries on. 

 Hence the Physiology of Plants falls for study some- 

 what naturally into divisions as follows: 



Division I. The Structure and Properties of the 

 Protoplasm of Plants. 



Division II. The Physiological Processes of Plants. 



