Carpenter, William Benjamin, 1813-1885 · Philadelphia : Blakiston · leaf 692
RlMii!fcffsometimes one individual >\Hydra developes only themale cysts or sperm - cells,while another developes only / … WM Hydra fusca in gemmation ; a, mouth;&, base; c, origin of one of the buds. the female cysts or ovisacs;but the general rule seems ^-j^X ^ \X^^\\\,to be that the same indivi- r^dual forms both organs. Thefertilization of the ova, how-ever, cannot take-place untilafter the rupture of the…
Microscopy · Biology
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