Instructions on measuring pollen of dimorphic plants.
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Instructions on measuring pollen of dimorphic plants.
Thanks WED for measuring cowslip pollen. Sends dimorphic flowers.
Thanks for DO’s Lessons in elementary botany [1864].
Asks him to inquire whether there are any twining species of Passiflora.
Experiment instructions.
Discusses WED’s observations on polymorphic flowers.
CD finishing Lythrum paper [Collected papers 2: 106–31].
Pleased at Bates’s appointment
and Wallace’s paper.
CD’s pleasure at JDH’s willingness to help Scott find a position in India.
Naudin underrates contamination of his experiments by insects. Thus CD doubts Naudin’s results on rapidity and universality of reversion in hybrids.
Wallace’s paper on man [see 4494] reflects his genius, although CD does not fully agree with it.
Thanks HCW for Lythrum specimens.
CD has at last finished his Lythrum paper. ["Three forms of Lythrum", Collected papers 2: 106–31.]
Forwards two character references for John Scott, for position JDH is arranging in India.
Request for climbing plants.
Writes of dimorphic plants.
Mentions WED’s extraordinary discovery of some pollen-grains of different sizes. The observations must be followed up.
CD much obliged for specimen and drawings.