...The segmentation of the body is very clear,especially on the abdomen... 
J. H. Fabre Bernard Miall 「Social Life in the Insect World」
...The segmentation is plainly visible...
Jean Henri Fabre Alexander Teixeira de Mattos 「The Glow-Worm and Other Beetles」
...But the special form of segmentation and layer formation which we find in themammal is by no means the original, simple, palingenetic form...
Ernst Haeckel 「The Evolution of Man」
...We may take as an illustration thepalingenetic segmentation and germinal layer-formation in an eight-fold insularcoral, which I discovered in the Red Sea, and described as MonoxeniaDarwinii...
Ernst Haeckel 「The Evolution of Man」
...In all real animals (that is, excluding the unicellularprotists) the segmentation of the ovum produces either a pure, primitive,palingenetic gastrula (Fig...
Ernst Haeckel 「The Evolution of Man」
...Both the segmentation of the ovum and the subsequentgastrulation have in this way been considerably changed...
Ernst Haeckel 「The Evolution of Man」
...Although this unequal segmentation of the cyclostoma, ganoids, and amphibiaseems at first sight to differ from the original equal segmentation (forinstance, in the monoxenia, Fig...
Ernst Haeckel 「The Evolution of Man」
...29), they both have this in common, that thecleavage process throughout affects the whole cell; hence Remak calledit total segmentation, and the ova in question holoblastic, or“whole-cleaving...
Ernst Haeckel 「The Evolution of Man」
...In spring they are to be found in clusters in every pond, andcareful examination of the ova with a lens is sufficient to show at least theexternal features of the segmentation...
Ernst Haeckel 「The Evolution of Man」
...Also the upper and darker hemisphereremains in this position throughout the course of the segmentation, and itscells multiply much more briskly...
Ernst Haeckel 「The Evolution of Man」
...Unequal total segmentation follows the same lines in the oldest fishes, theselachii and ganoids, which are directly descended from the cyclostoma...
Ernst Haeckel 「The Evolution of Man」
...The segmentation of the lens-shaped formative yelk (b) proceeds quiteindependently of the nutritive yelk, and in perfect geometrical order...
Ernst Haeckel 「The Evolution of Man」
...When the fertilisation of the bird’s ovum has taken place within themother’s body, we find in the lens-shaped stem-cell the progress of flat,discoid segmentation (Fig...
Ernst Haeckel 「The Evolution of Man」
...57—Diagram of discoid segmentation in the bird’sovum (magnified)...
Ernst Haeckel 「The Evolution of Man」
...In any case, the latter were developed from the former, andso the segmentation of the ovum in the Amphioxus has a great interest for us(cf...
Ernst Haeckel 「The Evolution of Man」
...The oldest Amœbæ lived isolated lives, and even the amœboidcells that were formed by the segmentation of these unicellular organisms musthave continued to live independently for a long time...
Ernst Haeckel 「The Evolution of Man」
...Thus the chief advantage in organisation by whichthe earliest Vertebrates took precedence of the unsegmented Chordonia consistedin the development of internal segmentation...
Ernst Haeckel 「The Evolution of Man」
...This segmentation of the muscles wasthe momentous historical process with which vertebration, and the developmentof the vertebrate stem, began...
Ernst Haeckel 「The Evolution of Man」
...From these segmentalmuscle-plates, which are chiefly concerned in the segmentation of theVertebrates, proceed the lateral muscles of the stem, as we find in thesimplest form in the Amphioxus (Fig...
Ernst Haeckel 「The Evolution of Man」
...Out of thisagitation arises a little spot, that is usually round, and enlargesprogressively to reach a maximum, after which it diminishes, withfrequent segmentation and shrinkage...
Camille Flammarion Frances A. Welby 「Astronomy for Amateurs」
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