...Kidd calls an "undesigned experiment," which to my mindgoes far to prove that the effects of prolonged friction on the humanbody during many generations is not heritable... 
Peter Nielsen 「The Black Man's Place in South Africa」
...It is highlysmooth and polished, and secretes a watery fluid which contributes topreserve that smoothness, and to prevent all friction and concussionduring the different motions of the animal...
Robert Jennings 「Sheep, Swine, and Poultry」
...The dry stage is followed by the exudation offluid into the heart sac, and the friction is not heard until the fluid isabsorbed sufficiently to allow the surfaces to come in contact again...
U.S. Department of Agriculture 「Special Report on Diseases of Cattle」
...At times, however, they show more or less flattening with roundedangular edges, caused by the contact and mutual friction of two calculi...
U.S. Department of Agriculture 「Special Report on Diseases of Cattle」
...They must beinvariably warmed before they are introduced, and they should be smeared withlard or oil to make them pass easily and without friction...
U.S. Department of Agriculture 「Special Report on Diseases of Cattle」
...The influence of thegrooming process appears to be somewhat like that obtained by massageand friction of the skin in the training of an athlete...
Nathaniel Southgate Shaler 「Domesticated Animals」
... Such things remind one of the waste, the friction that is going on all about us, even when the wheels of life run the most smoothly...
John Burroughs 「Birds and Bees, Sharp Eyes and, Other Papers」
...The two bows, the toothed nervures, engage obliquely one with the other,and their mutual friction causes the sonorous vibration of the twostretched membranes...
J. H. Fabre Bernard Miall 「Social Life in the Insect World」
...In this condition small skinsmay be sealed in glass jars or friction top tinsand kept damp thus for some time...
Leon Luther Pray 「Taxidermy」
...Perpetualfires, kindled with the wood of certain oak-trees, were kept up inhonour of Perkunas; if such a fire went out, it was lighted againby friction of the sacred wood...
Sir James George Frazer 「The Golden Bough」
...Insome cantons of Switzerland children still kindle a need-fire bythe friction of wood for the sake of dispelling a mist...
Sir James George Frazer 「The Golden Bough」
...Is not this in part the cause of the friction that has arisen in recent years over the administration of funds and lands and houses held by Japanese for mission purposes?...
Sidney L. Gulick 「Evolution Of The Japanese, Social And Psychic」
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