92 TENDRIL-BEARERS. Onar. IIL. 
The species last described, ascended a vertical stick 
by twining spirally and by seizing it alternately with 
its opposite tendrils, like a sailor pulling himself up 
a rope, hand over hand; the present species pulls itself 
up, like a sailor seizing with both hands together a 
rope above his head. 
The tendrils are similar in structure to those of the 
last. species. They continue growing for some time, 
even after they have clasped an object. When fully 
grown, though borne by a young plant, they are 9 inches 
in length. The three divergent toes are shorter re- 
latively to the tarsus than in the former species; they 
are blunt at their tips and but slightly hooked; they 
are not quite equal in length, the middle one being 
rather longer than the others. Their outer surfaces 
are highly sensitive; for when lightly rubbed with 
a twig, they became perceptibly curved in 4 m. and 
greatly curved in 7m. In 7 hrs. they became straight 
again and were ready to re-act. The tarsus, for the 
space of one inch close to the toes, is sensitive, but 
in a rather less degree than the toes; for the latter, 
after a sight rubbing, became curved in about half the 
time. Even the middle part of the tarsus is sensitive 
to prolonged contact, as soon as the tendril has arrived 
at maturity. After it has grown old, the sensitiveness 
is confined to the toes, and these are only able to curl 
very slowly round a stick. A tendril is perfectly ready 
to act, as soon as the three toes have diverged, and 
at this period their outer surfaces first become irritable. 
The irritability spreads but little from one part when 
