138 



Moore : The study of winter buds 



in the present investigation were drawn after a comparative study 

 of more than a thousand slides of serial sections representing over 

 five hundred buds. It will be seen by reference to the plates that 

 the leaf fundaments or lobes of homogeneous tissue, and the 

 young leaves, which increase in size and in degree of development 



Figure K. Temperature curve. 



Fahr, 



48^ 

 47° 



43 



35 



27 



19 



toward the periphery of the bud, are arranged in acropetal order 



around the menstematic point (figures 1,8, 30). • 



In the species under investigation, growth of the leaf bud by 

 addition of new tissue does not take place during November, 

 December, or January. It seems apparent, however, that a 

 stretching of cells occurs in many instances and manifests itself in 

 the greater convexity of the meristematic point and its consequently 



