The Colorado Grasshoppers

Colorado is evidently dostinod to become a prominent name with the farmers of the Northwest. Wo have had the potato heetle from Colorado, and now thora ia the Colorado grasshopper or locust, which has proved evon more of a gift than the beetle, from which the farmers would be saved. A correspondent of the N. Y. Tribune, returning from Iowa, givës the following description of these insects and their habits : " As the Colorado grasshopper has become a national calamity, as much so as the Colorado beetle, it is important that the people know all there is to be knowu about the insect. I have been watchiug their movements and gathering information for twenty years. They are not like any grasshopper I have ever seen ; they are built with broad face, heavy head and ehoulders, with a large, transparent butterfly wing, and eau fly from four to fivo hundred miles without stopping to feed. They do not come down every yeivr ; it varies from three to five years. The reason why we have not heard more of this insect in former years is that where they stop to feed there has been no crops growing, or any one to disturb until very recently. Away up on the plains of Colorado is where theyhatch, mature, anddeposit eggs for another generation, and after eating up everything that is eatable rise on the wing. Their course is first east, then north-oast, then north, until they settle down in the northwest corner of Iowa ; here they will cover every inch of an area of sixty miles square, lapping over a little into Minnesota and a little in Dakota. In a few days they rise on the wing all at once, and now their course is a trine west of norih. In the northern part of Dakota they settle down again to feed. From here they rise on the wing and cruss over into her Majesty's Dominions. They have eaton up all the green fields in Iowa, the leaves from the tren, and gnawed the bark from the wood. It is estimated that $300,000 would not cover the damage done by them to the settlers in fonr days' time. Their numbera can only be estimated by the thousand millions. Their usual flight is from four to five hundred feet high, but when they come to rise up in Iowa millions of them could not rise higher than from three to ten feet. If they struck their heads against anything they feil back dead. A large barn in Dakota was standing in their way and they struck against it and feil back dead, a i'oot thick and ten feet back from the barn ; from thisbarn along aboard fence running three miles to the north, they were found dead, six inches deep, from four to five feet from the feuce. And so they kept fallirig all the way until theycamo down tho second time tofeed in the northern part of Dakota, and even here, in this f ar off región, wero many farms brought under cultivation which they stripped and left the ground as naked ás a new-plowed field. I havo conversed with a man that saw the grasshoppers pass over our boundary line into British America. He said they darkened the sun for nearly all one day.