parasites in, [86] f., [161];

Dreyer's scheme of skeletal forms in meshes of an alveolar system, [84];

habitat, [87];

census of, [87];

palaeontology, [87];

students of, [88]

Radiolarian ooze, [87]

Radiomyaria, [324]

Radius, of Echinus esculentus, [503];

synonym of compass, [526];