372 MacDOUGAL— HYDRATION AND GROWTH. 



growth may result in lessened swellings or hydrations, a result to 

 be connected directly with certain fluctuations in the growth rate. 



Succulent stems, leaves and fruits may show growth in which 

 development or age is not accompanied by an increase of relative 

 dry weight. In some of these structures, such as the tomato, it is 

 possible to analyze the auxographic record and determine the actual 

 total accretion of material in any stage of development. The graph 

 plotted from such data does not follow the contours of a figure 

 plotted from the variations in thickness or diameter, the chief dif- 

 ference being that the maximum comes at a later period. 



