[74]

Passiflora quadrangularis. Aug' 30

Tendrils thick sensitive on concave side & not on convex.— Move slow & only towards light. becomes straight again.—

Tendrils arise from axes of leaves in Viniferæ opposite to leaves.— in neither any movement of internodes.

Aug 31st — Movement of tendril irregular, sometimes reversed; sometimes moving perpendicularly up & down & travelling at very irregular rates.

Performed one circle, reverse of watch in 3° & second circle in same direction in 4°. —

Again I have tried cl the concave side alone is sensitive of the uppermost part alone of tendril. — 6 rubs produced no effect on convex side; 3 on concave side caused it to be hooked.—

[75]

Aug 4th In Hothouse hot weather t. made 2 € in from 8° 10' to 12°. 53' ie 4°. 43'

Each € in 2° 22'— This more trustworthy than old observations in study—

Passiflora quadrangularis —

A stick placed in contact for hours with middle of t. no effect.─

[76]

Young t. of Passiflora quadrangularis of same age as younger one which corkscrewed in

2 (?) days — on tied up on 27th — full-grown on in 4 days (Augt 1') flexuous in 6 more days & 2 more (ie 12 days from tying up. had one complete spire — in one more day several spires — The spire began near base for basal part does not corkscrew.

Entirely closed on 17th. = 21 days!!

[77]

April 29th 64. Passiflora quadrangularis— thicker tendril Vines do, painted red line with thin paint, on much bowed side, & the red line was repeatedly on the concave & then on convex side; showing the demonstration that in rotation, whole curvature of t. changes, except extreme tip. In the Anguria the same thing partially happened.) with a black line. — With Tacsonia the paint, though thin, when it dryed formed minutest crust & this sufficed to cause permanent curvature

[77v]

I am sure that in Cobæa & Echinocystis t. straightened & bowed itself during revolution.─

In Passiflora flower pedun ─ & Echinocystis tips of tendril do not reverse ─ & both sensitive as concave side ─ In Cissus & Cobæa sensitive on all sides ─