例文・使い方で印象づける「boll」の覚え方
スポンサーリンク...The newly hatched boll worm walks like a geometrical larva or looper, a measuring worm as it was called... 
Louis Hughes 「Thirty Years a Slave」
...I have often watched the newly hatched boll while in the cotton fields...
Louis Hughes 「Thirty Years a Slave」
...As the boll worms increase in size a most wonderful diversity of color and marking becomes apparent...
Louis Hughes 「Thirty Years a Slave」
...They deserve to paytwenty cents a pound for their cotton when the boll weevil has cutdown the normal supply...
William T. Hornaday 「Our Vanishing Wild Life」
...The corn-root worm is charged with causing an annual loss of two per cent of the corn crop, or $20,000,000; the chinch bug another two per cent; the boll or ear-worm two per cent more...
William T. Hornaday 「Our Vanishing Wild Life」
...
—The great enemies of the cotton-planter are the cotton boll weevil, the bollworm and the leaf worm; but other insects inflict serious damage...
William T. Hornaday 「Our Vanishing Wild Life」
...In 1904 the loss occasioned by the boll weevil, chiefly in Texas, was conservatively estimated by an expert, Mr...
William T. Hornaday 「Our Vanishing Wild Life」
...The boll worm of the southwestern cotton states has sometimes caused an annual loss of $12,000,000, or four per cent of the crops in the states affected...
William T. Hornaday 「Our Vanishing Wild Life」
...The cotton boll weevil invaded the United States from Mexico in 1894...
William T. Hornaday 「Our Vanishing Wild Life」
...The cotton boll weevil strikes at the heart of the industry by destroying the boll of the cotton plant...
William T. Hornaday 「Our Vanishing Wild Life」
... Birds Useful In The War Against The Cotton Boll Weevil...
William T. Hornaday 「Our Vanishing Wild Life」
...Investigations by the Biological Survey show that thirty-eightspecies of birds eat boll weevils...
William T. Hornaday 「Our Vanishing Wild Life」
...Theirpeculiar value to the cotton grower consists in the fact that, likethe nighthawk, they capture boll weevils when flying over thefields, which no other birds do...
William T. Hornaday 「Our Vanishing Wild Life」
...It is not, of course, claimed that birds alone can stay the ravagesof the cotton boll weevil in Texas, but they materially aid inchecking the advance of the pest into the other cotton states...
William T. Hornaday 「Our Vanishing Wild Life」
...The boll weeviland clover-leaf weevil are eaten by the upland plover and killdeer...
William T. Hornaday 「Our Vanishing Wild Life」
...To-day, the people of Texas donot need to be told that forty-three species of birds feed on thecotton boll weevil; for they know it...
William T. Hornaday 「Our Vanishing Wild Life」
...The squirrels wind a swift ruddy chainabout a boll in their love chase, andeven now you may surprise the vixenfox watching the first gambols of hertawny cubs by the sunny border of thewoods...
Rowland E. Robinson 「In New England Fields and Woods」
...He was in charge of a Governmentdepartment having to do with Orientalbeetles, Hessian flies, boll weevils andsuch, and it seemed his life had beenjust one bug after another...
Various 「Astounding Stories of Super-Science April 1930」
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