Method of study of the life-cycle, of organisms of putrefaction, etc., [44];
of Flagellata, [116];
of Ciliata, [147]
Metopus, [137];
M. pyriformis, [154];
M. sigmoides, [154]
Metridium, [381] (= Actinoloba, q.v.)
Metschnikoff, [167], [178], [237] n., [296]
Microbes, [44]
Microciona, [225]