at first flexible and revolved, if they did not succeed in twining
round a support, become quite rigid, and supporting themselves
upright, carried on their summits the younger revolving internodes.

Here will be a convenient place to give a Table showing the direction
and rate of movement of several twining plants, with a few appended
remarks. These plants are arranged according to Lindley's 'Vegetable
Kingdom' of 1853; and they have been selected from all parts of the
series so as to show that all kinds behave in a nearly uniform
manner. {15}


The Rate of Revolution of various Twining Plants.

(ACOTYLEDONS.)

Lygodium scandens (Polypodiaceae) moves against the sun.

H. M.
June 18, 1st circle was made in 6 0
18, 2nd 6 15 (late in evening)
19, 3rd 5 32 (very hot day)
19, 4th 5 0 (very hot day)
20, 5th 6 0

Lygodium articulatum moves against the sun.

H. M.
July 19, 1st circle was made in 16 30 (shoot very young)
20, 2nd 15 0