208 The Botanical Gazette. [July, 
moved, cut into convenient lengths and placed in 96 per cent. 
alcohol which was changed several times to remove the acid. 
Sections were made with a Cambridge rocking microtome, 
fastened to the slide in series and after the removal of the par- 
affin stained in a h toxylin-eosin mixture of the follow- 
fined longitudinal bands. It often disappears entirely from 
the lower surface, being hidden by the deeper tinge of the 
ll 
their appearance just below it, followed by companion and se 
cells. The point of most rapid growth passes backward w! 
When the tendril has reached this stage three ee 
regions may be distinguished: the base or a ae 
Part, 3-4 cm. in length; the middle region or couing Pe ally 
comprising the greater part of the organ, which is genet 
slightly curved ; and the sharply curved or hooked tip, 4 
