[335]

Pinus pinaster (seeds from Kew) 1877

Nov. 24 25' seedling with 9 Cots. in circle.— observed in Hot-House surrounded by brown paper & cloths thrown over whole, so quite dark— coloured tip with chalk & put card with black dot on ground (& traced on Horizontal glass.)— fastened filament of glass to another cot. The stem was secured & I fixed filament of glass to free stem of other plant. [sketch]

Stem. The tracing greatly magnified, viz 65 times. I think no doubt represent represent. (see tracing A irregular nutation, though the stem moved towards me greatly in one direction, but began to move back next morning

(Used)

Cotyledons, 2 observed on same plant on opposite sides of same plant.

Left-Hand one with tip whitened (tracing B) with chalk & viewed obliquely so that I do not know how much magnified— see middle tracing —B made an irregular circle between 9°. 53' & 6°— moved greatly During night. —

Right-hand Cot. Tracing C with glass filament fixed to Cot. & magnified 21 3/10 times. We have here wen what apparently one circle, but with a great zi-zag which may represent a second; also moved greatly during night.

Though so much movement during night the tips of Cots do not approach each other as in sleeping plants; for I measured distance of 2 opposite one at 11° 30 & at 10° 10' P.m & distance was the same.