Publication Date:1880Title:Map showing a portion of western North America showing the distribution of Vegetation with reference to the Multiplication of and means of subduing the Rocky Mountain Locust.,li>Cartographer:Henry GannettPublisher:Department of the Interior, U.S. Entomological SurveyBrief Description:Prepared under the direction of the U.S. Entomological Commission by Henry Gannett E.M. 1879. Map 1. North Eastern section. Imp. map of forts R.R.s and settlements in northern Dakota and Manitoba. From: Second Report of the United States Entomological Commission for the years 1878 and 1879, relating to the Rocky Mountain Locust, and the Western Cricket and treating of the best means of subduing the locust in its permanent breeding grounds, with a view of preventing its migrations into the more fertile portions of the trans-Mississippi country, in pursuance of appropriations made by Congress for this purpose... An important series of maps that in addition to the subjects stated by the title locates nearly all the forts ever constructed in the Rocky Mountain West. Also all railroads, built or projected. Shows western Canada east to Manitoba. From 1873 to 1877, many Western States and territories were invaded by grasshoppers from the Northwest. In some states their destruction of crops was so serious that it caused starvation among pioneer families. Sweeping across North America, flying hordes of Rocky Mountain locusts were once an awesome and horrifying sight, huge glittering clouds of insects laying waste countless acres of crops. Throughout the 1800's, the whirring swarms periodically ravaged farm fields from California east to Minnesota and south to Texas. The locusts were easy to please, eating barley, buckwheat, melons, tobacco, strawberry, spruce, apple trees -- even fence posts, laundry hung out to dry and each other. Charles V. Riley studied this plague and published results in his last three Missouri annual reports and worked to bring it to the attention of Congress. In March 1877, he succeeded in securing passage of a bill creating the United States Entomological Commission, the Grasshopper Commission administered under the Director of the Geological Survey of the U. S. Department of the Interior. Riley was appointed chairman, A. S. Packard, Jr., secretary, and Cyrus Thomas, treasurer. 6 Forts, incl. A. Lincoln, in Northern Dakota; Northern Pac. R. R. to Yellowstone R. 4 Forts, R. R. in Canada. Fold repair.Height:14Width:15
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