Jenicz — Albuquerque, N. Mex. — Reagan. lOi 
Lithia ' ^ 
Silicic acid I 
Sulphate of lime f 
Potassa J 
0.2401 
These springs are known throughout America and Europe ; 
and it is not infrequent that one meets a foreigner here. 
The Soda Dam. — The Soda Dam is a long tavertine ridge 
built directly across the Jemez river at a point two miles above 
the Jemez Hot Springs. The ridge of tavertine has completely 
dammed the river. On it are situated 22 springs, or about one- 
half of the springs of this group. They all deposit tavertine 
and their charged waters running over the dam causes the cap 
of the dam to be built out farther and farther to the south each 
year, thus leaving rooms beneath the cap. These rooms are 
decorated with stalactites suspended from the roof. They are 
exceedingly picturesque. 
The waters of the springs come to the surface after en- 
countering a granite wall in their southern course, which cross- 
es the country in an east and west direction ; hence the line of 
springs. 
These springs existed in former geologic time and then 
dammed the river with their deposits the same as today. The 
remains of the first dam is nearly 1000 feet above the present 
one'; and, as the river has cut its channel down, a succession of 
dams in step-like order has been formed. These dams, there- 
fore, are evidence that Canyon San Diego was not formed al- 
together by a faulting of the strata; but that the Jemez river 
has here chiseled out for, itself the present channel. They also' 
indicate that the Jemez plateau has been raised by a series of 
uplifts, each dam marking a period of rest. 
The temperature of the gushing waters of these springs is 
from 75° to 105° F., the specific gravity is 1.0023; and the 
chemical analysis shows the following minerals in 100 parts of 
water :^^ 
.Chloride of sodium 0.2642 
Sulphate of soda 0.0059 
Carbonate of soda o.b2i9 
Carbonate of lime 0.0548 
Carbonate of magnesia 0.0057 
