Will be grateful for facts from Mr Linton on numbers of eggs from goldfinch–canary crosses.
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Will be grateful for facts from Mr Linton on numbers of eggs from goldfinch–canary crosses.
CD finds Alphonse de Candolle very useful, though JDH has low opinion.
CD argues for accidental introductions explaining some odd distributions, e.g., New Zealand vs Australian plants.
CD’s method.
Diverging affinities in isolated genera.
Thanks AG for 2d part of "Statistics [of the flora of the northern U. S.", Am. J. Sci. 2d ser. 22 (1856): 204–32; 2d ser. 23 (1857): 62–84, 369–403].
Is glad AG concludes species of large genera are wide-ranging, but is "riled" that he thinks the line of connection of alpine plants is through Greenland. Mentions comparisons of ranges worth investigating.
Believes trees show a tendency toward separation of the sexes and wonders if U. S. species bear this out. Asks which genera are protean in U. S.
Congratulations [on Mrs H’s delivery].
Balanus balanoides positively identified by CD.
Thanks for a kind note, and asks not to answer until better.
Thanks for information, which is just the amount he wanted.
Will not go to the BAAS meeting in Dublin: the frightful voyage deters him.
CD will advise W. F. Daniell on collecting.
Asks THH question on flow of glaciers after ice has been fractured and fragmented.
CD had to leave Royal Society lecture [joint paper by THH and J. Tyndall, "On the structure and motions of glaciers", Philos. Trans. R. Soc. Lond. 147 (1857): 327–46] before the end because of headache.
CD will advise Daniell not to apply for Royal Society grant.
CD’s experiment: fish fed seeds, which germinated when voided.
Feels unqualified to offer advice on research by the expedition; he has never attended to natural history of the region. Suggests collecting Carboniferous plants and studying the geographical extension of sea-borne erratic boulders.
Dining with the Lubbocks.
JL’s paper on respiration of insects ["On the distribution of the tracheae in insects", Trans. Linn. Soc. Lond. 23 (1860–2): 23–50].