The porifera and coelentera . Fig. ), Setidium obtcctum, (».S., g. /;, Olinelln ins<-ripta, , 3. (Both after Agassiz.) of budding. In the spreading fiirms (Fig. 5) the diverticula at thebase of the sponge person come into contact with the substratumand grow to a great length, forming a stolon-like basal network, SPONGES 19 ramifying only in one plane, from which arise erect diverticula atintervals which acquire osciila at their extremities, and thus assumethe characters of new individuals. In the arborescent forms, onthe other hand (Fig. 4), the erect oscular tube sends out numerou
The porifera and coelentera . Fig. ), Setidium obtcctum, (».S., g. /;, Olinelln ins<-ripta, , 3. (Both after Agassiz.) of budding. In the spreading fiirms (Fig. 5) the diverticula at thebase of the sponge person come into contact with the substratumand grow to a great length, forming a stolon-like basal network, SPONGES 19 ramifying only in one plane, from which arise erect diverticula atintervals which acquire osciila at their extremities, and thus assumethe characters of new individuals. In the arborescent forms, onthe other hand (Fig. 4), the erect oscular tube sends out numerous. 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
