(1

Oct 17. (Ipomœa) Phaslitis nil. (Convolvulus

Is it a climber?

Oct 17 Fixed bristle to the 2. Cots & tied stem to stick & observed on vertical glass. first dot at 8°. 55, & both Cots, then rose so greatly that at 12° out of glass at 8° 12' P.m were descending & on glass again. Next morning Oct 18 at 6° 45 were lower on glass than at 8° 55' on previous day, & began rising in exactly same manner.

Traced on Horizontal glass (diagram 1) stem tied movements little, & such as they were, were due I believe to the Cots, being oblique towards light so that upward movement would cause a lines such as those traced. It follows from this diagram, that the downward movement commenced at about 4° P.m., & continue in night or very early morning the upward movement begins.

Whether any lateral movement I know not, but I think so from some zigzagging in Right-Han Cot in Diagram (1).

At early night the 2 Cots looked rather more open or depressed than during day— but scarcely distinguishable & can be of no use.

(The upward & downward movement of Cot. much influenced by light, for I cover protected by concave card with roof, but open to back of room, the plant above experimented on, & made dot at 10° 30', continue to rise normally till 11° 45, but at 12° 15' had gone down considerably & continued to sink till 4° P.m, when almost out of glass. Therefore sinking began at about 12°, instead of at about 4° as seems the normal time.)

(2

Ipomœa nil

Oct 22d Nutation of ax 2 Plants; with very small plumule & good Cots Plant kept dark [sketch] traced on Horizontal glass. — See diagram 2. The air got damp & gummed bristle slipped down, after 2 or 3 Hours; but there is manifest nutation in stem. The left-hand Plant moved thrice in one direction & twice in a nearly opposite one in course of 3°. 15.— The right-hand plant rises twice in 1 direction & twice in nearly opposite one in 2°. 22'.—

On the whole diurnal movement of cotyledons & nutation of axis.