...Presently the translucency ofthe egg allows us to observe the fine segmentation of the tiny inmate...
J. H. Fabre Bernard Miall 「Social Life in the Insect World」
...This cell produces a cluster of cells by segmentation, and fromthese develops the multicellular organism, or individual of higher rank...
Ernst Haeckel 「The Evolution of Man」
...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」
...Hatschek rightly observes that the segmentation of the ovum in the amphioxus isnot strictly equal, but almost equal, and approaches the unequal...
Ernst Haeckel 「The Evolution of Man」
...In fact, thesevariations have become so great in the course of time that the segmentation wasnot rightly understood in most animals, and the gastrula was unrecognised...
Ernst Haeckel 「The Evolution of Man」
...The larger the accumulation of food, the more restricted is theprocess of segmentation...
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」
...To give a clearidea of the segmentation of this ovum, it is best to compare it with a globe,on the surface of which are marked the various parallels of longitude andlatitude...
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」
...57—Diagram of discoid segmentation in the bird’sovum (magnified)...
Ernst Haeckel 「The Evolution of Man」
...Onlythe latter exhibit the important processes of segmentation and gastrulation;and they alone have a primitive gut, and form germinal layers and tissues...
Ernst Haeckel 「The Evolution of Man」
...But apart from this, we have originally in allvertebrates an important articulation of the fore-gut, that is wanting in thelower gut, the segmentation of the branchial (gill) gut...
Ernst Haeckel 「The Evolution of Man」
...The segmentation of the Amphioxus is not entirely regular, as was supposedafter the first observations of Kowalevsky (1866)...
Ernst Haeckel 「The Evolution of Man」
...In the genealogical treeof the Vertebrates this palingenetic form of segmentation has been preserved inthe Amphioxus alone, all the other Vertebrates having cenogenetically modifiedforms of cleavage...
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」
...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」
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