atolls, [390] f.
Regeneration, [35];
of Stentor, [35];
of Thalassicolla nucleata, [79] n.;
of Infusoria after division, [145];
of oral apparatus of Ciliata during conjugation, [151]
Regular Urchins, [529], [530] = Endocyclica, q.v.
Relapses of malarial fevers explained, [106]
Relapsing fever, inoculated by Zambezian Tick, [121] n.
Relationship, cellular, explained, [10]