Capria, [321]

Caravella, [308]

Carbohydrates, formation of, [33]

Carbon dioxide, attracts Paramecium, [23];

excretion of, [8], [13] f.;

secreted by Arcella, etc., [53]

Carchesium, [138];

feeding of, [145], [158]

Carinal ossicle of Asteroidea, [436]

Carlgren, [378] n.