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Show DESCRIPTION OF THE COLORADO. 433 the Jabesuas falls in the Rio de San Antonio, 23 which rather can be called an arroyo than a river. Among the Jalchedunes and Jamajabs falls in the Rio de Santa Maria, 24 which also is usually dry. Among the Yumas falls in the Gila, which though it is so voluminous, yet is not so all the year. I inquired likewise if, on the part of the north and northwest, there entered into the Colorado any other; and all answered me nay, reducing their information solely to those ( rivers) mentioned. In the parts where I have observed this river, only in one can it be forded on horseback, and that is at the Yumas, when it goes down; but for fording ( is it even then) very risky and shifty, as we experienced the past year [ 1775], finding no transit where we had crossed it the preceding year [ 1774]. It has copious woods on its banks, with the exception of the situations where it flows walled up ( encaxonado, " canonated " ) between cliffs; it grows on them willows, cottonwoods, mezquites, and screws. 28 It is " GarceV name of Cataract Canon and creek: note M, p. 335, and text of June 20, p. 336. ** GarceY name of Bill Williams' river: note *, p. 419, Aug. 5. " The willows of the Colorado bottoms are not well determined. The cottonwood is Populus frenumii. The mesquite is Prosopis julifloro, for which another Spanish name is algarroba, source of the botanical generic name under which the tree used to be classified as Algarohia gUmdulosa. The tornilla or screw mesquite is Prosopis pubescens. Among various grasses which |