318 BOTANICAL GAZETTE [APRIL 
Analogy in support of this view is not wanting, in general sup- 
port of which may be cited also the apparently rather ready pro- 
duction of proliferations from spur shoots, with or without injury, 
in pine seedlings found. by THomson. These seedlings grew in 
nurseries, probably under unusually favorable conditions for this 
Fic. 2.—Proliferated spur shoots of Pinus Taeda: A, development of the 40 
below the whorl of fascicled leaves; B, a permanent branch formed. by proliferation. 
reason, especially as regards water supply. The likelihood that 
the spur shoots of mature trees do not proliferate, or if so more 
rarely than those of young trees or seedlings, is little lessened by 
my observations of Pinus radiata, since the trees were all young, 
or at any rate were not mature. 
