WED reports on studying the pollen of grass and Valerian through his microscope.
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WED reports on studying the pollen of grass and Valerian through his microscope.
Lenny [Leonard Darwin]’s illness.
Polymorphism in valerian and Lythrum salicaria.
Leonard’s illness.
Polymorphism in valerian and Erythraea.
Sends observations on Valeriana officinalis.
Asks WED to send some specimens [of Lythrum?].
[Letter from Emma Darwin to WED on verso.]
Asks for advice on where a local chemist can send his brother’s meteorological observations from Missouri.
WED has been collecting Lythrum plants. Numerical proportions of the three forms.
Sends specimens of the three forms of Lythrum. Remarks on the numerical proportions of different forms.
Discusses Lythrum, "a really wonderful case"; asks WED to make observations and collect specimens; sends a diagram which shows what crosses he believes are fertile.
Would like George to watch bees visiting the flowers; wants some pods from different forms to compare shapes and count seeds.
Discusses a crossing experiment.
Has been counting the seeds in pods [of Lythrum?].
Has read CD’s long letter on Lythrum and agrees with it. Is examining the pollen of the different types.
Gives advice as to whether certain meteorological observations would be worth making.
Discusses length of pistils, and measuring seeds and pods for botanical work.
Sends comments on Lythrum.
Effect on seed production of differences in distance between Lythrum plants.
Sends observations on Lythrum. Reports bad health of Maud Atherley.
Asks WED to make some observations on differences in pods of Lythrum.
Distances between Lythrum plants.
Thanks WED for observations on Lythrum.
Discusses family affairs.
Has found Lythrum, and sends some. Wants to know what CD thinks of frog discussion between Sandars and James. Asks CD to send objects for microscope demonstration. Means to go see the London Exhibition again. Has finished reading Orley Farm and returns it.