Thanks for cotton seeds.
Germination of Megarrhiza.
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Thanks for cotton seeds.
Germination of Megarrhiza.
Suspects WTT-D is the author of a good review of Erasmus Darwin in Nature [21 (1880): 245–7].
Asa Gray wants seeds of a variety of cotton known as vine cotton.
Wants Ipomoea seeds for observing germination.
WTT-D’s suggestion about absorbent function of pegs in Abronia suggests origin of pegs in Welwitschia, which deeply interests CD. Previously could not see how pegs became large enough to be of mechanical use. Now thinks tissue between hypocotyl and radicle absorbs fluid, which would favour rise of peg to expose larger surface.
Rejects German contempt for investigating use of organs.
Asks WTT-D to observe how worms draw Robinia leaves into burrows.
CD may not mean same thing as WTT-D by absorbent pegs in Abronia.
F. O. Bower’s paper on Welwitschia [germination] [Q. J. Microsc. Sci. 21 (1881): 15–30] will appear in January.
Has observed earthworms for CD: they do not draw Robinia leaves into burrows by the petioles.