Page 370 - 1915, Springs of CA.

850 SPRINGS OF CALIFOEIsriA.
LA MESA SPRING (SAN DIEGO 14).
La Mesa Spring is beside a small drainage swale half a mile south-
east of La Mesa railroad station, or 11 miles by railroad northeast of
San Diego. It was formerly known as Indian Spring, as it was a
favorite camping place for a few families of Mission Indians. A few
years ago the spring was inclosed by a small building, and a bottling
house was erected, but when the spring was visited in the summer of
1908 the water had not been placed on the market. A faucet near
the house enabled campers and local residents to obtain the water.
It is slightly alkaline and has a faint odor of hydrogen sulphide. At
the spring the granitic rock is much decomposed, and the bed of the
swale is covered with dark-colored alluvial soil.

EL GRANITO SPRING (SAN DIEGO 13).
El Granito Spring is at the base of the granitic slopes at the southern
border of El Cajon Valley, 16 miles by railroad northeast of San Diego.
The water issues in a small tunnel in decomposed granite at the side
of a ravine and is piped about 50 yards to a bottling house. It has
been on the local market for several years as a table water. The fol-
lowing analysis indicates that the water is primary saline and sec-
ondary alkaline in character and also has notable primary alkalinity.
Analysis of water from El Granito Spring, San Diego County, Cal.
[Analyst, Joseph Luce. Authority, advertising matter. Constituents are in parts per million.]
17° C. (62° F.)
Properties of reaction:
55
°0
14
31
14
By Reacting
Constituents. weight. values.
138 5.98
«190 4.87
4.8 .24
58 4.80
Trace. Trace.
5.4 .54
Sulphate ( SO4) ...................................................................... 383 7.98
Chloride (Cl) ..................*.................................................... 26 .72
208 6.95
snica(SiOs). ........................................................................ 16 .53
1,029.2
38 1.73
» Probably too high, since as reported it is considerably in excess of the sodium.

BRADLEY SPRING (SAN DIEGO 7).
Bradley Spring is 6 miles.by road northward from the railroad ter-
minus at Foster station, or 30 miles northeast of San Diego. The
water issues at the base of a granitic bowlder in a steep brushy