...While these subtle forces have generallyfollowed the natural cleavage of common blood, descent and physicalpeculiarities, they have at other times swept across and ignored these... 
W. E. Burghardt Du Bois 「The Conservation of Races」
...Inten eggs (KU 62154 from San Salvador, El Salvador) the average diameterof the embryos in first cleavage is 1...
William E. Duellman 「Neotropical Hylid Frogs, Genus Smilisca」
...In view of this cleavage, it was difficult in the beginning of the struggleto characterize the situation...
Various 「The Journal of Negro History, Vol. I. Jan. 1916」
...The same direct cleavage of the nuclei is also witnessed in thereproduction of many other protists, while other unicellular organisms show theindirect division of the cell...
Ernst Haeckel 「The Evolution of Man」
...The stem-cell that proceeds from the impregnated ovumalways passes by repeated cleavage into a number of simple cells...
Ernst Haeckel 「The Evolution of Man」
...Now, however, each of them subdivides into twoequal halves, the cleavage of the nucleus again preceding that of thesurrounding protoplasm...
Ernst Haeckel 「The Evolution of Man」
...
The number of segmentation-cells thus produced increases geometrically in theoriginal gastrulation, or the purest palingenetic form of cleavage...
Ernst Haeckel 「The Evolution of Man」
...When the cleavage is thus ended, the mulberry-like mass changes into a hollowglobular sphere...
Ernst Haeckel 「The Evolution of Man」
...In these cases the cleavage of the ovum begins atthe upper pole, and leads to the formation of a dorsal discoid embryo...
Ernst Haeckel 「The Evolution of Man」
...The cleavage surfacesbetween the segmentation-cells appear at the free surface of the tread asclefts...
Ernst Haeckel 「The Evolution of Man」
...Themuch larger food-yelk, which does not share in the cleavage, is left out andmerely indicated by the dark ring without...
Ernst Haeckel 「The Evolution of Man」
...Byrepeated cleavage of it a morula is formed, and from this a blastula, whichchanges in a very characteristic way into the greatly modified gastrula...
Ernst Haeckel 「The Evolution of Man」
...In thesecases the whole yelk undergoes cleavage at first, and forms a yelk-gland,composed of yelk-cells, in the ventral wallof the primitive gut...
Ernst Haeckel 「The Evolution of Man」
...(As to the womb and oviductsee Chapter XXIX) The cleavage and formation of the gastrula take place in theoviduct...
Ernst Haeckel 「The Evolution of Man」
...The whole life of these homogeneous globules of plasm consistsof simple growth and reproduction by cleavage...
Ernst Haeckel 「The Evolution of Man」
...They multiply by simple cleavage (Fig...
Ernst Haeckel 「The Evolution of Man」
...But gradually smallcommunities of Amœbæ arose by the side of these eremitical Protozoa, thesister-cells produced by cleavage remaining joined together...
Ernst Haeckel 「The Evolution of Man」
...Since the lines of cleavage are so widelydissimilar in the two cases, both methods of study are necessary to acomplete understanding of a picture...
Estelle M. Hurll 「The Madonna in Art」
...A winding passage showed between sheer walls of snow white, where giantcrystals had parted along their planes of cleavage...
Charles Willard Diffin 「Two Thousand Miles Below」
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