To W. E. Darwin [19 May 1864]1
My dear Wm
Yr observation on the 1 big anther with its differently sized pollen grains is a quite new & most extraordinary discovery.2 I remember distinctly seeing one anther much larger than all the others; but I never dreamed of the pollen-grains differing.
Never mind whether it kills you or not search more flowers & measure pollen & keep memorandum how many times you succeed for I shall lay great stress on this to me most unexpected discovery.
I return your letter (which keep most safely) & it may be of service to you, but more especially because I think you have written one, or 2 words wrong which I have pencilled for correction.3
Never mind Menianthes Rhamnus4 or your life but work this out. Goodbye | what weather | C. D.
I wish you many ever get the little mare.5 She does beautifully—
Mentions WED’s extraordinary discovery of some pollen-grains of different sizes. The observations must be followed up.
Please cite as
Darwin Correspondence Project, “Letter no. 5333,” accessed on 25 April 2017, http://www.darwinproject.ac.uk/DCP-LETT-5333