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 (prosopis juliflora) as many frost-resistant strains that are scattered from Texas to Patagonia." A Chemical and Structural Study of Mesquite, Carob, and Honey Locust Beans, by G. P. Walton, Assistant Chemist, Cattle Food and Grain Investigation Laboratory, Bureau of Chemistry, U. S. Department of Agriculture, Department Bulletin No. 1194.

"Mesquite grows over a wide range of territory and will flourish where the more valuable carob can not exist. It is common in Hawaii, where it was introduced in 1828 and is known as the algaroba or keawe bean [E. C. Shorey, in The Composition of Some Hawaiian Feeding Stuffs, Hawaii Agricultural Experiment Station Bulletin 13, published in 1906, says on pp. 12-13 that algeroba is the usual Hawaiian way of spelling and that this plant is not the true algaroba], and in Jamaica, where it has been called 'cashaw.' [Abrahams, C. R., 'Cashaw Poisoning,' in Journal of Jamaica Agricultural Society, 1897. Vol. I, pp. 319-21.] It is found also from the southern boundary of Utah and Colorado to Chile, and has been introduced into India and South Africa, where it is attracting favorable attention. [Brown, W. R., 'The Mesquite (Prosopis Juliflora), a Famine Fodder for the Karroo.' In Journal of the Department of Agriculture (Union of South Africa, 1923). Vol. VI, pp. 62-67.]"

According to C. V. Piper (letterL May, 1923): "The mesquites belong to the botanical genus prosopis, in which there are about 30 valid species, although many more than this have been proposed. One species occurs in Persia and India, one in the eastern Mediterranean region, two in Africa, and the rest in America. Argentina is richest in species, 15 occurring in that country. In one group of species, the pods are coiled and hence called screw beans. According to some botanists these constitute a distinct genus, strombocarpa. Two species of screw beans occur in the United States and four in Argentina. . . . P, juliflora is apparently the same as the older p, chilensis, which ranges from Patagonia to Texas. The species so abundantly introduced into the Hawaiian Islands is p. chilensis and is there known as kiawe or algaroba. The common species in the United States (p. glandulosa torr.) occurs from southern California to Texas and Oklahoma. In modern times it has spread greatly and now occupies extensive areas formerly prairie. This is probably due to the seeds being carried by horses and cattle and not being injured in passing through the intestinal tract."

According to F. V. Coville, Botanist, U. S. Department of Agriculture, letter. August 17, 1927:

"The range of each of the American species of mesquite and screw bean covers a wide area in our Southwest. All