...In appearance and intellect he represented the ordinary Maryland slave, raised on a farm, surrounded with no refining influences or sympathy... 
William Still 「The Underground Railroad」
...Clotelle found in Georgiana more a sister than a mistress, who, unknownto her father, taught the slave-girl how to read, and did much towardimproving and refining Clotelle's manners, for her own sake...
William Wells Brown 「Clotelle: a Tale of the Southern States」
...Civilization has been the refining agent of our qualities...
Various 「Mother Earth, Vol. 1 No. 4, June 1906」
...They arestill susceptible of more refining...
Various 「Mother Earth, Vol. 1 No. 4, June 1906」
...The bulk of thebone product was converted into phosphate for fertilizing purposes, butmuch of it was turned into carbon for use in the refining of sugar...
William T. Hornaday 「The Extermination of the American Bison」
...In refining sugar as inrefining salt (coarse bay salt containing a little iodine), anerror may be committed in abstracting matter designed by nature fora useful purpose...
J. Emerson Tennent 「Sketches of the Natural History of Ceylon」
...On the top of this mass theregradually came into shape the delicate structureof her nest, compacting and refining till its delicatecarpet of hairs and threads was reached...
John Burroughs 「Bird Stories from Burroughs」
... is used in the formation of mastic; also in the refining of sugar,oil, &c...
George Vasey 「Delineations of the Ox Tribe」
..."When calcined they are used as an absorbent to carry off the basermetals in refining silver...
George Vasey 「Delineations of the Ox Tribe」
... Furthermore, this profound experience is not utilized as it is in the West as a refining and elevating influence in the life of a young man or woman...
Sidney L. Gulick 「Evolution Of The Japanese, Social And Psychic」
...And then, of course, there is his treatise on ocrite: how he happenedto find the ore, the probable amount available on L-472—or Ibit, if youprefer—and an explanation of his new method of refining it...
Various 「Astounding Stories of Super-Science September 1930」
... spent hours improving and refining the apparatus, but in the end heconfessed himself beaten...
Sterner St. Paul Meek 「The Solar Magnet」
...Sugar, the way of refining it in Brazil with clay...
William Dampier 「A Voyage to New Holland」
...Without companions—or refining influences...
Henry Handel Richardson 「Australia Felix」
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