classification, [183];
forms of, [184], [222], [224];
development, [232];
of Alcyonaria, [334] f., [336]
Spindle, in cell-division by mitosis, [25] f.;
intranuclear, of Euglypha, [29]
Spines, of pelagic Foraminiferal shell, [66], [69];
of Globigerina bulloides, [69];
of Asteroidea, [454];
of arms of Ophiothrix fragilis, [479];