92 



GERMINATION 



extended into the seed substance and seemed to provide 

 protection if not additional insulation to the plumule . Tested 

 galvanometrically, however, the only part distinctly positive 

 was the foliage, the rest being of negative sign ; I am 

 adhering to the natural polarity. 



Where the plumule issued from the seed it was tongue- 

 like and the collar continuous with the radicle, the former 

 being seated in a species of cup, the sides of which connected 

 with the root, thus : 



. /^i//nc//e 



/f<7c//a'e 



/7^.;ra 



and when cut in section 



and further : 



• /^os/f/ae 



'iXy) 



/7e^af/i/e 



/yjr.72 



Notwithstanding the fact that speculative reasoning 

 very frequently leads nowhere there is great temptation to 

 indulge in it. The following is pure theory : 



