The porifera and coelentera . Vic. (IS. Ileteroivffma Hf)f?«.«/orrfi/, Pol., part of a iransvcrse spction. The external surface is upper-most ; tlie pastral surface towards tlie lower side ; the spicules are represented by straiphtcontinuous lines ; the Hat epithelium by (lotted lines ; the collar cells by numerous small circlesrendering the branching; nidial tubes dark. (After Pol^jaefJ, Challenger Reports.) xCO. The leuconoid tjpe of canal system has probably been evolvedfrom the syconoid tyjie in more ways than one. There are at leasttwo modes of evolution wiiich can be indicated with toler
The porifera and coelentera . Vic. (IS. Ileteroivffma Hf)f?«.«/orrfi/, Pol., part of a iransvcrse spction. The external surface is upper-most ; tlie pastral surface towards tlie lower side ; the spicules are represented by straiphtcontinuous lines ; the Hat epithelium by (lotted lines ; the collar cells by numerous small circlesrendering the branching; nidial tubes dark. (After Pol^jaefJ, Challenger Reports.) xCO. The leuconoid tjpe of canal system has probably been evolvedfrom the syconoid tyjie in more ways than one. There are at leasttwo modes of evolution wiiich can be indicated with tolerable. -Xvi>^
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Keywords: ., bookcentury1900, bookdecade1900, booksubje, booksubjectctenophora
