...It has been alate fashion for English and Frenchwriters—Verlaine, Mallock, OscarWilde, and even that rare genius RobertHichens—to intermingle religion andspirituality with the sexual instinct... 
Various 「Ainslee's magazine, Volume 16, No. 2, September, 1905」
...Europe can at least boast of a bold art and literature which delvedeeply into the social and sexual problems of our time, exercising asevere critique of all our shams...
Emma Goldman 「Anarchism and Other Essays」
... Yet a prostitute, if properly defined, means nothingelse than "any person for whom sexual relationships are subordinatedto gain...
Emma Goldman 「Anarchism and Other Essays」
...Regarding the shedding of these horns, it is supposed that theoperation is connected with the sexual functions...
Robert A. Sterndale 「Natural History of the Mammalia of India and Ceylon」
...Take the matrix of a female fox taken in the running season or, in other words, cut out the entire sexual organs and place them in a pint of alcohol, and the result will be the best scent ever made...
A. R. (Arthur Robert) Harding 「Fox Trapping」
...Beneath the eye a spot of white downy feathers, with a dusky border above and below; there is a little difference between this and Illiger's bird, but it may be only sexual...
William Swainson 「Zoological Illustrations, Volume II」
... The number of caudal scales showed some degree of sexual dimorphism; the average was 45...
Ray D. Burkett 「Natural History of Cottonmouth Moccasin, Agkistrodon piscovorus (Reptilia)」
...With our Geese and Swansthere is no sexual difference in color...
Frank M. Chapman 「Color Key to North American Birds」
...So it is with the breeds of the fowl, as we have already seen, as far as the colour of plumage is concerned, and so it is with the other secondary sexual characters...
Charles Darwin 「The Variation of Animals and Plants Under Domestication, Vol. I.」
...Some members of the Cincinnati Horticultural Society, especially appointed to investigate this subject, report that "few varieties have the flowers perfect in both sexual organs," &c...
Charles Darwin 「The Variation of Animals and Plants Under Domestication, Vol. I.」
...716) remarks that he knows no species which presents any remarkable sexual distinction; but it is stated ('Naturalist's Library, Birds,' vol...
Charles Darwin 「The Variation of Animals and Plants Under Domestication, Vol. I.」
...It may be manifested by a constant or frequent erection, by attemptsat sexual connection, and sometimes by the discharge of semen withoutconnection...
U.S. Department of Agriculture 「Special Report on Diseases of Cattle」
...In bull or cow which is becomingunduly fat and showing indications of sexual indifference, the treatment mustbe active...
U.S. Department of Agriculture 「Special Report on Diseases of Cattle」
...Themembrane of the sexual parts of the cow is strongly injected, and of adull red colour...
Honoré Bourguignon 「On the cattle plague: or, Contagious typhus in horned cattle. Its history, origin, description, and treatment」
...Thelarge opening at the extremity of the queen, which you have observed inso particular a condition, seems to correspond to the singular size ofthe sexual parts of the male...
Francis Huber Anonymous 「New observations on the natural history of bees」
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