Show AN american A DESERT one of the driest parts of 0 the united states Is what Is called the papago country a region including about square miles in southwestern arizona so called because it was long ago inhabited by the no luadie papago indians this broad expanse of desert country which lies between gila river and the Alexi mexican cau boundary contains many groups ot of volcanic and other mountains separated by broad alluvial basins which though the rainfall is small aud and the temperature Is high sustain a scant growth of desert plants including orchard like groups of strange trees here the bold boid slopes of the mountains the general at ab bonce of watering places and the peculiar forms of the vegetation impress the trave traveler lei strongly with the majesty and the mystery of the desert and excite his wonder as to the origin tand land history of the natural features A report on this by kirk bryan has just beon bean published by the united states geological survey department of the interior as bulletin Bullet ln 13 under the title erosion and sedimentation in the papago country arizona the report describes the geology briefly as a setting tor for a consideration ot of the agencies that agencies that have produced the forms of the land and presents detailed conclusions as to the mode of origin ot of the desert landscape the paper Is illustrated with diagrams views and maps and should be of interest to all students of topography and particularly those who are endeavoring to lo solve problems of 0 erosion by wind and water in desert regions |