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2") - Preliminary notes on the physiology of Sponges. 3) - The collar-cells of Heterocœla.

4) Balfour (F.M.). Morphology te. of the Spongida.

5) Masterman (A.T.). Nutritive excretory processes in Pori 6) Kambe (K.M.). Sponges from the Atlantic coast of Canad

7) Vosmaer (G.C.J.) & A.C. Pekelharing. On Sollas's momb s

in Sponges.