Dodge, Mary Mapes, 1830-1905 · [New York : Scribner & Co.] · leaf 232
tionhas been found in lobsters, crayfishes and otherrelated Crustacea. This variation is not particularly rare, thoughnot the commonest variation in the big claws.The points to notice about it are, that it is not acase of duplex claws (doubling of the claw), butof duplex fingers, or to be painfully… … THE PECULIAR CRAB CLAW.The two upper points are extra fingers. The next lower (shortand curved downward) is the regular right finger. The lower projec-tion is the regular right thumb. The causes of such deformities are somewhatobscure, but seem to be in some way concernedwith injuries, and the…
Children's literature
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