Page 171 - 1915, Springs of CA.

CARBONATED SPRINGS. 155

The conditions that were observed at the springs in California well
bear out the facts that have been recorded of springs elsewhere at
which there are notable deposits. They show that the temperature
of the water and its rate of cooling, the amount of carbon dioxide that
is present, and the concentration of the solution in other constitu-
ents as well as calcium all influence the deposition of calcium car-
bonate.
CARBONATED SPRINGS.
NUMBER AND LOCATION.
The number of carbonated springs popularly known as soda
springs in California is larger than the number of hot springs, but
few of the former class have been improved to greater extent than to
form drinking springs at summer resorts. Most of them are of small
flow, but they usually furnish good drinking waters.
The carbonated springs (see PI. Ill, in pocket) are confined mainly
to the coastal ranges north of San Francisco Bay and to a belt along
the Cascade-Sierran uplift. The rocks of these regions have been
briefly described (pp. 7-13) but are discussed in greater detail in
connection with the description of the springs.

JACKSONS NAPA SODA SPRINGS (NAPA 12).
One of the best known and most extensively developed mineral-
spring resorts of the State is at Jacksons Napa Soda Springs, on the
mountain side 650 feet above Napa Valley. The principal buildings
here, which were erected during the eighties, are made of a volcanic
tuff quarried near the springs. A bathhouse and a pavilion are
frame structures of more recent date. The property is open during
the summer and provides accommodations for about 250 guests.
In 1892 Anderson 1 mentioned 27 springs at this place, but in 1910
only four were improved and made use of. Pagoda Spring, which
rises in a hemispherical basin covered by a roof supported on stone
pillars, is the principal drinking spring, but when visited its visible
overflow was only about one-eighth of a gallon a minute. The water
is strongly carbonated and has deeply iron stained its basin. Lemon
Spring, which is similar in character to the Pagoda Spring, issues
in a stone-roofed basin at the side of the driveway, 25 or 30 yards
below the Pagoda Spring. Two other springs rise in a stone house
and are covered by tanks that collect the carbon dioxide that is
given off. This gas is used to more heavily carbonate the water,
which is piped to a large bottling house near by. The water has not
been extensively marketed east of the Pacific coast States, but has
been shipped to Asiatic ports.
i Anderson, Winslow, Mineral springs and health resorts of California, p. 202,1892.