Excerpt from Distribution and Movements of Desert Plants It is a matter of congratulation that the existing flora has been so little disturbed or modified by human agency. The few introduced weeds, though in some cases conspicuous, have made little real impression upon its character, and there is no evidence that extermination of species has followed the occupation of T umamoc Hill by the prehistoric people, the outlines of whose dwellings are still distinctly traced upon its summit, nor even through the ruthless work of modern quarrymen, by which its sides are here and there marred. Changes due to human agency have undoubtedly occurred, and are seen most plainly along the various trails and wagon-roads that have been constructed; but there is no reason to suppose that thus far they are of more than the most superficial character. Certain changes are beginning to follow the fencing of the reservation, coincidently with the exclusion of hunters and cattle; but the flora in all its essential features, as it now exists, is presented to us as the final phase, thus far, of the natural movements and adjustments that have been taking place, broadly speaking, Since early Pleistocene times. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.