Roemer, [199] n.

Romanes, on physiology of Echinoidea, [519], [521]

Rompel, on Spirochona, [144] n.

Rosette, -aggregate, of Treponema, [120];

of Antedon rosacea, [584]

Ross, on intermediate host of malarial parasites, [103]

Rotalia, [59], [65]

Rotaliaceae, [59]

Rotifers, bladder of, [14] n.;

rheotaxy of, [21];