Asks whether crossing breeds of hive-bees is advantageous
and whether different pigeon breeds have different incubation periods.
Explains and apologises for the lack of detailed quotations in Origin.
Asks whether crossing breeds of hive-bees is advantageous
and whether different pigeon breeds have different incubation periods.
Explains and apologises for the lack of detailed quotations in Origin.
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Greatly praises AG’s discussion of Origin in Proc. Am. Acad. Arts & Sci. [4 (1860): 411–15; 424–6].
Mentions other reviews of Origin; believes the BAAS meeting at Oxford greatly advanced the subject. Has heard his views are gaining ground in Germany.
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CD mistaken, in Origin, p. 73, in saying that only humble-bees visit red clover.
Describes, using a diagram, how the solar protuberances appeared to him as a color-blind person when he observed a solar eclipse.
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On behalf of GW's wife, thanks for JH's gift of table and bedcurtains.
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[Government refusal to support five-year magnetic survey] has eliminated services of T. W. Blakiston and Thomas Hull as directors of two magnetic observatories. Instruments for Montreal observatory. Recent magnetic changes in North America. Success of elder B. C. Brodie's eye operation.
Thanks CH for correction of blunder in Origin about hive-bees sucking clover: "a greater kindness than a new fact".
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