Hoffmann, on the inheritance of acquired characters, [93-4], [114].
Hydromedusae, Weismann on generative cells of, [71], [109];
illustrate continuity of germ-plasm, [73-73].
I.
Identical twins, [41].
Idio-plasm, Nägeli’s term, [31];
A and B, [31-32];
self-multiplication of, [34];
amount of idio-plasm A in the nucleus, [40].
Ids, [123].