﻿APPLEM AN—REST PERIOD 



Phosphorus— Phosphorus is an essential element of two of the 

 most important constituents of the cell, the nucleoproteins and the 

 lipoids. Protein, lipoid, and extractive phosphorus were deter- 

 mined at intervals during the rest period with a view to ascertaining 

 if certain gradual transformations of the phosphorus combinations 

 occur during the rest period in order to render phosphorus available 

 in the proper form for the growing buds. 



TABLE XII 



Calculated to percentage of total phsophorus, it was found that 

 the percentage of extractive phsophorus was consistently higher in 

 the seed end than in the stem end; the percentage of protein phos- 

 phorus, on the other hand, was always less in the seed end. The 

 percentages of all the phosphorus combinations were practically con- 

 stant throughout the rest period (tables XII and XIII). 



