Page 332 - 1915, Springs of CA.

312 SPRINGS OF CALIFORNIA.

Analyses of water from Isham and Nuvida springs, San Diego County, Cal.
[Authority, advertising matter. Constituents are in parts per million.]

]I S '
Properties of reaction:
36 5
38 79
0 0
Primary alkalinity.......... . ...... . . . ............ 0 0
26 1ft
12 25
By Reacting By Reacting
Constituents. weight. values. weight. values.
Sodium (Na) .................................................. 110 4.78 19 .84
18 .45
95 4.73 139 6.93
Magnesium (Mg) ............................................... 57 4.71 108 8.91
.3 .01 2.0 .07
Aluminum (Al)..... ........... .... ....... .8 .09 7.9 .87
1.4 .05 20 .73
Sulphate (SO<).... ............................................ 52 1.08 55 1.15
Chloride (Cl). .................................................. 346 9.76 454 12.79
Iodide (I)..... ................................................. .1 9.1 .07
Carbonate (CO3) ............................................... 117 3.89 104 3.47
rp-po/iA
Phosphate (PO<)........ ......................................
Silica (SiOj)....-- ............................................. 63 1.76 i02 3.37
850.6 1,020.0
1. Isham Spring. Analysts. Price & Son.
2. Nuvida Spring. Analyst, C. E. Munroe.
IRON SPRINGS.
SPRINGS PREVIOUSLY DESCRIBED.
A few of the springs of California deserve separate consideration
because of the exceptionally large quantities of iron deposited by
their waters. Among those that have already been described prob-
ably the most noteworthy in this respect are Arlington Springs
(Plumas 12, p. 229), which have been mentioned among the carbonated
springs, though they might as properly be described as iron springs,
for their waters have deposited so much of the mineral that the sur-
rounding soil has been used locally as an ocher for the preparation of
paint.
IRON SPRINGS IN YOSEMITE VALLEY (MARIPOSA 4).
Probably one of the most frequently visited groups of iron springs
in the State is half a mile southwest of Mirror Lake in Yosemite
Valley, on the western side of the outlet of the lake. Two springs
rise at this place. At the lower one the water issues around the edge
of an oval depression a few yards in diameter, 2 or 3 feet below the
normal surface of the valley soil. A keg that has been sunk near the
center of the depression forms a drinking pool which yields about
10 gallons a minute of cold excellent water. The second spring rises
about 50 yards farther upstream, in an area of marshy ground a few