...These are about seven or eight feet deep, three or four feet wide at the mouth, and gradually decrease till they are only about a foot wide at the bottom... 
David Livingstone 「Missionary Travels and Researches in South Africa」
... As the population increases, the alligators will decrease, for their nests will be oftener found; the principal check on their inordinate multiplication seems to be man...
David Livingstone 「Missionary Travels and Researches in South Africa」
... But the great cause of the decrease of the slaves was in the non-residence of the planters...
Thomas Clarkson 「The History of the Rise, Progress and Accomplishment of the」
...This decrease in the island of Jamaica was but trifling, or, rather, it had ceased some years ago; and if there was a decrease, it was only on the imported slaves...
Thomas Clarkson 「The History of the Rise, Progress and Accomplishment of the」
...It appeared from the privy council report, that from 1698 to 1730 the decrease was three and a-half per cent...
Thomas Clarkson 「The History of the Rise, Progress and Accomplishment of the」
...This last decrease was not greater than could be accounted for from hurricanes and consequent famines, and from the number of imported Africans who perished in the seasoning...
Thomas Clarkson 「The History of the Rise, Progress and Accomplishment of the」
...Kitts the decrease for fourteen years had been but three-fourths per cent...
Thomas Clarkson 「The History of the Rise, Progress and Accomplishment of the」
...But for this, the decrease would have been trifling...
Thomas Clarkson 「The History of the Rise, Progress and Accomplishment of the」
...As night approached, however, the wind began to decrease, and the sea, having no great distance to run, went down...
W.H.G. Kingston 「The Two Supercargoes」
...Some had the feeling that in proportion as the Negro received education, in the same proportion would his value decrease as an economic factor in the state...
Booker T. Washington 「Up From Slavery: An Autobiography」
...Increase in size and decrease in number ofthe toes were not the only changes that wererequired to transform the progeny of the Hyracothereinto a horse...
Frederic A. Lucas 「Animals of the Past」
..., their numbers, in some states, seem to be on the increase rather than the decrease in face of the fact that heavy bounties are offered...
A. R. (Arthur Robert) Harding 「Wolf and Coyote Trapping」
... Another group of cottonmouths from which venom was extracted over a period of five years also showed no decrease in yield or toxicity...
Ray D. Burkett 「Natural History of Cottonmouth Moccasin, Agkistrodon piscovorus (Reptilia)」
...At present itis not as popular as in days of old, but we do not believe that itsvalue will decrease, as the catch becomes lighter each succeeding year...
A. R. Harding 「Fur Farming」
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