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H. S. REED AKD F. F. HALMA 



(1) the young shoots remain unbranched for a long time if the 

 apical bud remains active; (2) when a portion of a shoot is am- 

 putated, the buds immediately below the point of amputation 

 are not only the first to develop into shoots, but they produce 

 the largest shoots. 



Fig. 1. The type of regeneration resulting from amputating young branches 

 of the pear tree. 



A. Two shoots very unequal in length which developed from two buds just 

 back of the point of amputation. The lower shoot started much later than the 

 upper. 



B. Two shoots which started at the same time, yet the upper shoot is larger 

 than the lower. The upper shoot produced one lateral late in the summer fol- 

 lowing the cessation of growth of the terminal bud. 



So long as the apical bud of a shoot grows uninterruptedly, 

 there is seldom any development of lateral branches, as is shown 



