Page 74 - 1915, Springs of CA.

70 SPRINGS OP CALIFORNIA.

The place has long been resorted to on holidays by picnic parties
from the neighboring sheep and cattle ranches; but it has been com-
paratively seldom visited by campers, as it is not a desirable spot for
a vacation retreat.

SAN LTTIS HOT SPRING (SAN LTJIS OBISPO 8).
Southward from San Luis Obispo and near the ocean is a resort
of considerable importance that utilizes the artesian flow of an unsuc-
cessful oil well. This well was begun in the fall of 1885 and abandoned
in March, 1887, when at a depth of 937 feet. Quantities of gas and
warm, sulphureted water were obtained, but no oil was yielded. A
number of years ago the water is reported to have had a tempera-
ture of 103° and discharge of 100 gallons a minute.1 In 1908 a
temperature of 107° was recorded. The discharge seemed to have
materially decreased but was not measured. The following is an
analysis of the water:
Analysis of water from San Luis Hot Spring, San Luis Obispo County, Cal.
[Analyst, E. W. Hilgard (1885). Constituents are in parts per million.]
39° C . (103° F.)
Properties of reaction:
Primary salinity ................................................................ 45
Secondary salinity .............................................................. 0
0
32
23
Tertiary alkalinity. . ............................................................ 210
By Reacting
Constituents.
weight. values.
Sodium (Na)....... ................................................................ 182 7.91
20 1.01
17 1.41
49 1.74
16 .57
96 2.00
CMoride(Cl)........................................................................ 94 2.64
1.2 .01
206 12.82
171 5.69
3.1 .07
Silica (Si02).......................................................................- 27 .91
881.3
120 5.44
42 2.48
This analysis is stated'in per cent in the thirteenth report of the
California State Mining Bureau and in grains per United States
gallon in an advertising folder, but the figures are the same in both,
except that arsenic is given as 16.06 in the report of the mining
bureau and 0.06 in the folder. The recomputation to the foregoing
statement was made on the assumption that in the original state-
ments the gases were expressed in cubic inches per gallon and other
constituents in grains per gallon, the value 0.06 being taken for
arsenic. The most notable feature of the analysis is the large pro-
i California State Mineralogist Tenth Kept., p. 577,1890.