...I left the heather, scrambled up some yards of screes, andhad a difficult time on some very smooth slabs, where only the friction oftweed and rough rock gave me a hold... 
John Buchan 「Mr. Standfast」
...The first restrictive measurewas passed, after considerable friction between theCouncil and the House, in 1713; it laid a duty of £10, currency...
W. E. B. Du Bois 「The Suppression of the African Slave Trade to the United States of America」
...The result is so far satisfactorythat there is little or no class friction...
W.E.B. Du Bois 「The Negro」
...What effect, if any, the diggingand grading, the iron rails, the tension of steam in locomotives,the friction of metallic surfaces, the poles and wires, the actionof batteries, etc...
W. E. Webb 「Buffalo Land」
...As the inflammation extends, the friction ofthe parts causes pain, and the sheep limps...
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」
...The pain iscaused by the friction of the dry, inflamed pleural surfaces of the lung andchest on each other...
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」
...Some aresharp-cornered, with facets determined by chance fractures; some areround, polished by friction under water...
J. H. Fabre 「The Wonders of Instinct」
...In some parts ofSwabia the Easter fires might not be kindled with iron or steel orflint, but only by the friction of 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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