Floristic work. — Great Southwest. 29 
cation on the Algae of the Northiwestern America by WILLIAM A. SETCHELL 
and NATHANIEL L. GARDNER in University of California Publications Botany 
(Volume I: pp 165—418. 1903) and CHas. V. PiPER published in 1906 a Flora 
of the State of Washington as Contributions from the U. 5. National Herba- 
rium, vol. XI. 
The botanic centers on the Pacific Coast are three in number located 
at the University of California at Berkeley, at the San Francisco Academy of 
Sciences and at the Leland Stanford Junior University at Palo Alto. The 
botanists connected with the University of California are E. W. HILGARD, 
Wırrıam A. SETCHELL, WirLıs L. JEPsON with the San Francisco Academy 
as Curator of the herbarium, ALICE EASTWOOD with the Stanford University, 
DoucLass H. CAMPBELL, WILLIAM R. DUDLEY and GEORGE J. PEirce. A 
botanic garden is maintained at Berkeley and also experimental grounds in 
connection with the agricultural experiment station. 
VI. Great Southwest. 
In addition to the reports and papers issued by the government, which 
contain the results of the botanic survey of the great Southwest should be 
mentioned one by GEORGE ENGELMANN, on the Character of the Vegetation 
of Northwestern Texas printed in the Proceedings of the American Asso- 
ciation for the Advancement of Science for 1851, and by the same botanist, 
Geography of the Cactus Region of the United States, published in the third 
volume of the Proceedings of the American Academy of Arts and Sciences. 
O. LOEW published in the sixth volume of the report upon the geographic 
and geologic explorations and surveys west of the one hundredth meridian in 
charge of Lieutenant GEORGE M. WHEELER investigations upon mineralogic 
and agricultural conditions observed in portions of Colorado, New Mexico and 
of the region visited, and later in 1876 a Report on the Geographical Distri- 
bution of Vegetation in the Mohave Desert. GEORGE VASEY in the thirteenth 
volume of the Botanical Gazette gives an account of the characteristic vegetation 
of the North American desert. The most important work on the botany of 
the arid region of the southwestern United States up to the publication of 
J. M. Courrter’s Manual of the Phanerogams and Pteridophytes of Western 
Texas, issued as volume II of Contributions from the United States National 
Herbarium 1891 —-94, is without question the Catalogue of Plants collected ın 
the years 1871, 1872 and 1873 with Descriptions of New Species known 
usually as ROTHROCK’s Botany of the Wheeler Survey, published by the 
government in 1874. As Contributions from United States National Herbarium 
were published by J. N. ROSE lists of plants collected by EDWARD nn 
in New Mexico and Arizona in 1890, and J. W. TOUMEY in the a 
Gazette for 1892 contributes a. List of the Flora of Central Arizona. ai 
question of the bacterial content of the air of desert regions Bas geh 
attention, JoHN WEINZIRL publishing in ıgoo in the Proceedings © 
