(7x

Aristolocha gigas. July 22 upper internode above leaf 1/5 of full size, (& surmounted by little internode 2 inches long) performed a circle in 8° it then went on moving.

July 23d performed another circle in 7°. 15' & continued moving, always reverse of hand of watch.— The internode beneath the above leaf remained stationary.

Silk-thread tied to tip of shoot was not wound round it after 3 revolutions — I put a stick for 24° 36° to the stationary internode close beneath moving internode & it caused no flexure.— (This is great fact no moving, no climbing.) The shoot performed another circle in about 5°.—

July 24th A stick has now touched lower internode for 48° 1/2 inch below the leaf & no flexure has ensued. This morning I

(8x

put stick above leaf 1/2 inch off, so that the 2 sticks were 1 inch apart:—

The shoot, at once began, (though inclined at 35° to horizon) to curl round the stick & completed € in 9°. 15'.

A thread tied to tip was not wound up; but then I see this internode itself had become spirally wound twisted; & I doubt how far always in connection with this; for an old internode which had never clasped anything was spirally twisted; this may be like twisting of common tree. —