The porifera and coelentera . Fifi. :...Vetulina stalactites, (After Agassiz). |. diverticula along its whole length, which form new oscula at theirextremities when still quite short, and the daughter individualswhich are thus formed repeat the same process, throwing outdiverticula rapidly on every side. In this way arises an arborescent.

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Keywords: ., bookcentury1900, bookdecade1900, booksubje, booksubjectctenophora