Introduces J. P. Lesley, "the most accomplished geologist of the United States".
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Introduces J. P. Lesley, "the most accomplished geologist of the United States".
LA clarifies his opposition to CD’s views, which does not blind him to the great value of CD’s original researches.
Answers CD’s questions regarding sexual coloration of Amazonian fishes and the protuberances on the head of male Geophagus and Cichla during the spawning season [see Descent, pp. 520, 529].
Introduces his son Alexander; believes CD will find him "more tractable" on certain questions than LA himself is.
Thanks LA for Methods of study [1863].
Is gratified that he has not taken a personal dislike to CD, though he is strongly opposed to nearly everything CD has written.
Thanks LA for information on sexual differences in the coloration of Amazonian fish. CD was anxious to know how the sexes differed because they are unusual in that the male has the largest share in looking after ova and young.