Protomastigaceae parasitic in, in fever, [119] f.

Blood-corpuscle, entered by Haemosporidae and Acystosporidae, [102] f., [104] f.;

by Treponema and Trypanosoma, [120]

Blood-system, of Asterias rubens, [449] f.;

of Echinus esculentus, [529];

of Holothuria nigra, [567];

of Antedon rosacea, [587]

Bloody rain, [125]

Blowflies, alleged spontaneous generation of, [42]

Bodo, [111], [119];