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Report on the Agriculture Experiment Stations of the University of California (PH 4-16)(1890) (211 pages)

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Page: of 211

CENTRAL EXPERIMENT STATION. 21
became available under the Act of Congress known as the ‘‘ Hatch law,”
establishing experiment stations in each State. This was an exceedingly
important enactment for our station, because the work had outgrown the
space and facilities which could be spared for it in the older University
buildings. Its requirements in work exceeded the compass of the old force
of assistants, and improved facilities for field, garden, and greenhouse cultures were alsoimperatively demanded. The addition of the United States
funds to those hitherto available from the University resources, also made
possible the establishment of outlying culture sub-stations, of which Professor Hilgard had early seen the need, and which he had advocated in his
reports and public addresses for the previous decade.
The most obvious results thus far attained by the realization of funds
from the Hatch law are: The increased force. and vastly extended and
improved facilities at the Central Station at Berkeley, and the establishment and equipment of the outlying stations.
General Climatic and Topographic Features of the Bay Region.
The “bay region” constitutes a climatic as well as a hydrographic and
topographic feature; for, insignificant as the break formed by the Golden
Gate may seem, it modifies profoundly the climate of the country lying
adjacent and opposite to it, not only by the influence of its cool tide water,
but as well by the correspondingly cool lower air currents sweeping through
it almost throughout the season, and carrying with them both the temperature and the moisture of the ocean, both modified by the cold Alaskan
current. In summer, the river of fog,a mile and a quarter wide and from
six hundred to fifteen hundred feet high, may be seen flowing in steadily
through the Gate in the afternoon, first submerging the city of San Francisco, and then broadening and sending off branches right and left up and
down the bay, and toward evening reaching the opposite shore, where the
Contra Costa Range forms a barrier fora time. Eventually this is surmounted, and finally the cloudy ocean may reach as far as Mount Diablo,
where it dissolves before the dry air of the Great Valley. The direct influence of this current extends about ten miles each way on the opposite
shore, causing an exceptionally low summer temperature, which fails to
eben the grape and the fig. On the western shore of the bay the high ranges
of the immediate coast form a barrier not surmounted by a considerable
proportion of the summer fogs; under the lee of these a warmer summer
temperature prevails on the bay-shore slopes of the counties of San Mateo
and Marin, as well as on both shores of the southern portion of San Francisco Bay, toward San José. The cold currents strike across San Pablo
Bay into the lower part of Napa and Sonoma Valleys, but are chiefly
deflected so as to form a steady and sometimes hard “ blow” through the
Straits of Carquinez, beyond which they enter the Great Valley and form
the regular ‘‘up-valley” winds of that region.
Back of the bold promontory that narrows the passage from San Pablo
into San Francisco Bay, begins the sloping plain (and in part the marsh
belt) that skirts the eastern bay-shore from San Pablo to San José, forming, with the corresponding plain lying south of San Francisco on the
western shore, an important and thickly populated agricultural region.
Opposite San Francisco this slope is about three miles wide, falling about
three hundred feet from the foot of the Contra Costa hills. Southward it
widens to seven or eight miles on either shore, a tide marsh belt of varying
width striking the bay shore; and the two belts, finally uniting at the lower
end of the bay, form the broad and fertile Santa Clara Valley, so noted for