Killing of Plant Tissue by Low Temperature 



173 



It will be seen again that absorbing the solutions increased the 

 resistance to cold. Depressions were not taken because it would 

 require too many fruits treated in this way. However, it is safe 

 to assume that the sap density was increased as it certainly was with 

 the fruits used for the next table. 



During the spring of 1913, twigs containing peaches, apples 

 and cherries were placed with the ends in glvcerine solution, sugar 



