The porifera and coelentera . Fig. 4. Fig. Fio. 2.—YounK sppriniPiis of Clnthrino, corimra., Mont., xO. a, ; h, older stage,with tliree diverticula commencing to form ; c, .still older stage, with diverticula anastomosingto form the tubar system ; d, small colony with two oscula ; osc, osculum ; iliv, diverticula. Fio. 3.—Small colony of Lciicosolenia Lieberkiihnii, , X6. osc, osculum ; div, diverticula. Fio. 4.—Arborescent colony of Leiicosolenia complicata, Mont., x6. Fio. 5.—Creeping colony of Leucosolcnia variahilis, H., with numerous erect, and for themost i)art simple, oscu
The porifera and coelentera . Fig. 4. Fig. Fio. 2.—YounK sppriniPiis of Clnthrino, corimra., Mont., xO. a, ; h, older stage,with tliree diverticula commencing to form ; c, .still older stage, with diverticula anastomosingto form the tubar system ; d, small colony with two oscula ; osc, osculum ; iliv, diverticula. Fio. 3.—Small colony of Lciicosolenia Lieberkiihnii, , X6. osc, osculum ; div, diverticula. Fio. 4.—Arborescent colony of Leiicosolenia complicata, Mont., x6. Fio. 5.—Creeping colony of Leucosolcnia variahilis, H., with numerous erect, and for themost i)art simple, oscular tubes, arising from a creeping stolon, x 6. single—that is to say, where the sponge retains a single osculum andgastral cavity. The wall of a primitive vase-like sponge may increase duringgrowth either in superficial extent or in thickness, or in both ways atonce. We may consider first the results of an increase in the 6 SPONGES surface of the body wall. In the first place, such increase may takeplace mor
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Keywords: ., bookcentury1900, bookdecade1900, booksubje, booksubjectctenophora
