[307]

Orange Gourd. Dec. 17 & 18th /77/

Traced on Horizontal glass in Hot-House— protected from light.—

Dec. 17th Arc of hypot. cot just visible on a little beneath level of ground —, cleared away soil from little little above .2 of inch way all round to depth of about rather more than .2 & fixed glass filament rather obliquely to basal part of stem with shell-lack & placed triangle on ground. The filament dropped off on 2d day but I believe was about 1/2 inch from mark & as Horizontal glass was was 12.75 inches, after filament affixed, hollow filled up with crumbling earth, except minute conical hollow round base of filament.

[insertion:] I then tied with sil silk the apex of stem bearing the Cots to the basal parts.

Diagram magnified about 25 times. The first great movement between 9º am & 3º 4º 15 was zig-zag. showing tendency to [illeg] "circumnutation", but was chiefly the bending of the basal part from the seed & from the side where the Cots lay— If this had not be tied no doubt they wd have risen, owing to the unbending of the arc. From 3º. 5' to 6º went to left & then came back to 8º 15' & then back again to 10º 10'. Here we have clear circumnutation — Course during night shown by broken line, but no doubt nutated. By 10º next day (18th) the Cots. were out of ground & now fine circumnutation was exhibited, reaching by 10º P.m, nearly same spot as on previous night — By this time basal part of stem had grown greatly.

Cu. aurantia