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1877 Jan 10' Vegetable marrow Radicles

Seed germ. on sand— shell cracked at one end, with radicle curling down a little towards ground & projecting .07 beyond beyond shell— fixed seed vertically in wet sand & fixed with shell-lac glass filament to do near base of radicle, which as radicle & the glass filament as radicles was inclined projected at about angle of 45° with mark below & traced in darkness on Horizontal glass. [sketch] First dot 11° 25'

Tracing magnified 13.61 times; besides increase from length of filament

First dot 11°. 25, last 10° 27' (ie 11°). during day moved moved in general direction governed by apo-geotropism, but clearly circum circumnutated at first as as if to discover how geotropism would act best. During night tip of radicle moved so much down that the glass filament was nearly horizontal where at first was about 45° above horizon

Jan 11th another seed with radicle projecting .35 was turned upside down & covered with damp sand, with filament attached to distal part of radicle & observed as before.—filament stood at about 45°. or 50° above horizon.

Jan 12. another seed with radicle projecting .35 of inch, turned it upside down & fixed glass filament, which projected at angle of above 45° & traced & magnified as in last case — Diagram B traced from 8°. 35 to 8° 15'. First movement probably from disturbance.— Course decidedly zig-zag, due to geotropism, influencing circumnutation. — N. B glass-filament fixed to tip of radicle, & which was injured by the shell-lac & affixing.—