..."We willobey the law, but to ask for voluntary segregation is to insultourselves... 
W. E. B. Du Bois 「Darkwater」
...With this peculiarly uninviting coast line and the difficulties ininterior segregation must be considered the climate of Africa...
W.E.B. Du Bois 「The Negro」
...Under this last mentioned solution of the Negro problems wemay put the attempts at the segregation of Negroes and mulattoesin the United States and to some extent in the West Indies...
W.E.B. Du Bois 「The Negro」
..., the segregation of the two colours is strictly a case of reversion by bud-variation...
Charles Darwin 「The Variation of Animals and Plants Under Domestication, Vol. I.」
...Examination of 18 specimens from Costa Rica shows no differences in scutellation, nor geographic segregation of two populations...
William E. Duellman 「Amphibians and Reptiles of the Rainforests of Southern El Peten, Guatemala」
...As I have mentioned previously, ecological segregation andinterspecific competition probably is highly developed in the tadpolesof Ptychohyla...
William E. Duellman 「A Review of the Middle American Tree Frogs of the Genus Ptychohyla」
...The parrot minnow also was common in thisgeneral area; nevertheless, these two species were seldom numerousin the same seine-haul, indicating segregation of the two...
James Everett Deacon 「Fish Populations, Following a Drought, in the Neosho and Marais des Cygnes Rivers of Kansas」
...A bimodal size-distribution of young-of-the-year was noted alsoin 1958 and 1959; but, no segregation of the two sizes occurredon riffles in summer...
James Everett Deacon 「Fish Populations, Following a Drought, in the Neosho and Marais des Cygnes Rivers of Kansas」
...Many forms of segregation may be specified, under each of which evolution proceeds on a different principle...
Sidney L. Gulick 「Evolution Of The Japanese, Social And Psychic」
...The intermittent character of occupancy is alsoshown by the distinct segregation of numerous successive layers ofkitchen refuse...
Gerard Fowke 「Archeological Investigations」
...Where teeth were to be expected, long parallel ridges of what lookedlike bare bone, appeared, without even a rudimentary segregation intoteeth...
Victor Rousseau 「Astounding Stories of Super-Science January 1930」
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