...Their mode ofmarriage is thus:—both parties are usually betrothed when young bytheir parents, (though I have known the males to betroth themselves)... 
Olaudah Equiano 「The Interesting Narrative of the Life of Olaudah Equiano, Or Gustavus Vassa, The African」
...The males utter a loud succession of snorting grunts, which may be heard a mile off...
David Livingstone 「Missionary Travels and Researches in South Africa」
...This was the first instance I had ever seen of a comparatively young one with the males, for they usually remain with the female herd till as large as their dams...
David Livingstone 「Missionary Travels and Researches in South Africa」
...Some of the largest males advanced so close as to make a snatch at Omrah...
Captain Frederick Marryat 「The Mission; or Scenes in Africa」
...It is said that the proportion of female emigrants to males is as three and a half to one...
Horatio Bridge 「Journal of an African Cruiser」
...The satisfaction it seemed always to afford these guardians of the city to find either males or females trespassing in this particular, was unmistakable...
William Still 「The Underground Railroad」
...Then,—in order that the gastronomic regime may produce the results claimed for it,—not only must the females be fattened, but the males must be rendered impotent...
P. J. Proudhon 「What is Property?」
...—This institution is the fortunate possessor ofa small herd of ten buffaloes, of which four are males and six females...
William T. Hornaday 「The Extermination of the American Bison」
...Adult males attaina length of sixteen feet, and females eleven feet...
William T. Hornaday 「Our Vanishing Wild Life」
...All the photographs of elephantherds that were taken by Kermit Roosevelt and Akeley show a strikingabsence of adult males and of females with long tusks...
William T. Hornaday 「Our Vanishing Wild Life」
...Thestatement is made, however, that somehens kept for six years by Lady Essexgradually assumed an attire like thatof the males...
Various 「Birds Illustrated by Color Photograph [January, 1897]」
...The proportion of males isgenerally small, and some herds have been seen composed exclusivelyof females; possibly in consequence of the males having been shot...
J. Emerson Tennent 「Sketches of the Natural History of Ceylon」
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