HCW is trying to define what CD means by "variable" genera.
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HCW is trying to define what CD means by "variable" genera.
Comments on transport of ducks to Jamaica by hurricanes,
fish feeding on seeds,
and sterility of birds in captivity.
Describes problems of classifying species in highly variable genera. Lists highly variable genera. Comments on the list of Asa Gray. Says species may be made to appear more or less variable according to whether a genus is divided into few or many species.
Separation of sexes in trees [U. S.].
Do plants offer positive evidence for "continuous land" theory?
Protean genera.
Ranges of species in large vs small genera: Asa Gray’s compilation fits CD’s expectation.
CD studies seedling mortality in his weed garden.
JDH’s work on Indian flora.
Sends account of his successful experiments in feeding wheat seeds to minnows.
Voting to elect JL [a member of Athenaeum].
Thinking about HF’s paper on Plagiaulax [Q. J. Geol. Soc. Lond. 13 (1857): 261–82]. Owen might answer that all Purbeck mammals are marsupials.