Page 40 - 1915, Springs of CA.

38 SPEINGS OF CALIFOKNIA
SAN JACINTO HOT SPRINGS (RIVERSIDE 9).
San Jacinto Hot Springs, formerly known as Relief Hot Springs,
are situated at the valley edge, 6 miles southeast of the Eden springs.
About half a dozen springs here issue from a bank of granitic allu-
vium and form a marshy area several acres in extent.
The place has been a resort for more than 20 years, a frame hotel
and cottages and tents forming a little settlement in a grove adjacent
to the springs. Besides the usual tub baths there are mud baths that
use material from the tule marsh.
The waters are sulphureted and they also taste distinctly alkaline.
Efflorescent alkaline salts form in small amounts on the banks beside
the springs, and the iron and sulphide contents cause the water to
stain the towels and enameled tubs. The following partial analysis
of the water that is used chiefly for bathing shows the general char-
acter- of the water, though the several springs differ somewhat in
chemical characteristics:

Analysis of water from Black Spring, San Jacinto Hot Springs, Riverside County, Cal.
[Analyst, E. W. Hilgard (?). Authority, advertising matter. Constituents are in parts per million.]
Properties of reaction:
Primary salinity...................................... Dominant.
Secondary salinity...................................... (?)
Tertiary salinity........................................ 0
Primary alkalinity..................................... (?)
Secondary alkalinity................................ Prominent.
Tertiary alkalinity..................................... Present.
Residue:
Soluble in water........................................ 3, 770
Insoluble in water...................................... 2,120
5,890
Portion soluble in water.
Sulphate (S04)........................................... 366
Chloride (Cl)........................................... 1,920
Carbonate (C03)........................................ 30
Metaborate (B02)....................................... Trace.
Nitrate (N03)........................................... Trace.
Sodium and potassium (Na+K), chiefly sodium........... 1,454
Portion insoluble in water:
Silica (Si02)............................................ 20
Calcium (Ca), magnesium (Mg), carbonate (C03), and sul-
phate (S04), chiefly calcium........................... 2,100
Hydrogen sulphide (H2S).................................... Present.
The analysis indicates that the water is highly concentrated, is
chiefly primary saline in character, and has secondary alkalinity as
a prominent property. The water is unsuited for industrial or
agricultural use.