...Contrasting pale and dark areas of the germinal layercorrespond to the pattern of markings on the scute removed... 
John M. Legler 「Natural History of the Ornate Box Turtle, Terrapene ornata ornata Agassiz」
...Hence, Wolff came to the view by 1768 whichPander developed in the Theory of Germinal Layers fifty yearsafterwards...
Ernst Haeckel 「The Evolution of Man」
...In 1867 and the following years thediscovery of the germinal layers was extended to other groups of theinvertebrates...
Ernst Haeckel 「The Evolution of Man」
...Many of the nuclei contain several of thesenucleoli (as, for instance, the germinal vesicle of the ova of fishes andamphibia)...
Ernst Haeckel 「The Evolution of Man」
...Finally, we find in many ova (but not in all) a stillfurther point within the germinal spot, a “nucleolin,” which goesby the name of the germinal point...
Ernst Haeckel 「The Evolution of Man」
...Its tread is composed of several cells, and isnow commonly called the germinal disc...
Ernst Haeckel 「The Evolution of Man」
...This encloses a darkergranule, the germinal spot, which shows a nucleolus...
Ernst Haeckel 「The Evolution of Man」
...The globular yelkis surrounded by the thick transparent germinal membrane (ovolemma, or zona pellucida)...
Ernst Haeckel 「The Evolution of Man」
...These two layers, which are the sole builders of the wholeorganism, are no other than the two primary germinal layers, or the primitivegerm-layers...
Ernst Haeckel 「The Evolution of Man」
...The two primary germinal layers were first distinguished by Pander in 1817 inthe incubated chick...
Ernst Haeckel 「The Evolution of Man」
...Twenty years later (1849) Huxley pointed out that in manyof the lower zoophytes, especially the medusæ, the whole body consiststhroughout life of these two primary germinal layers...
Ernst Haeckel 「The Evolution of Man」
...This was theprimitive gut; and the two primary germinal layers which form its wall mustalso be regarded as identical in all...
Ernst Haeckel 「The Evolution of Man」
...The circular border of the germinal disk which connects the roofand floor of the segmentation-cavity corresponds to the border-zone at theequator of the amphibian ovum...
Ernst Haeckel 「The Evolution of Man」
...At this spotwe have the most brisk cleavage of the cells; hence the cells are more numerousand smaller here than in the fore-half of the germinal disk...
Ernst Haeckel 「The Evolution of Man」
...At the same time, the segmentation-cavity gradually disappearsaltogether, the folded inner germinal layer (ik) placing itself fromunderneath on the overlying outer germinal layer (ak)...
Ernst Haeckel 「The Evolution of Man」
...60—Longitudinal section of the germinal diskof a siskin (discogastrula)...
Ernst Haeckel 「The Evolution of Man」
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