Bombyx cynthia, proportion of the sexes in; pairing of.
Bombyx mori, difference of size of the male and female cocoons of;
pairing of.
Bombyx Pernyi, proportion of sexes of.
Bombyx Yamamai, M. Personnat on; proportion of sexes of.
Bonaparte, C.L., on the call-notes of the wild turkey.
Bond, F., on the finding of new mates by crows.
Bone, implements of, skill displayed in making.
Boner, C., on the transfer of male characters to an old female chamois;
on the habits of stags; on the pairing of red deer.
Bones, increase of, in length and thickness, when carrying a greater
weight.
Bonizzi, P., difference of colour in sexes of pigeons.
Bonnet monkey.
Bonwick, J., extinction of Tasmanians.
Boomerang.
Boreus hyemalis, scarcity of the male.
Bory St. Vincent, on the number of species of man; on the colours of
Labrus pavo.
Bos etruscus.
Bos gaurus, horns of.
Bos moschatus.
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