’ 
| Church — Underground Temperatures on the Comstock Lode. 289 
_ Other measures, with the mean results of Dembowski’s obser- 
vations, are: 
Newcomb _-........P=162° D=1"-10 1874°8 Qn 
Dembowski.._. ._..- 174°5 1°24 1875°1 37 
Dembowski.._.-___- 170°5 1°32 1875°7 2n 
Dembowski.._. ..__. 161°5 1°24 1876°8 Qn 
ME ee ee 166°9 1°62 1876°9 27 
LO" Set acta co 160°2 1°03 1776°9 2n 
Dembowski.-__. .___. 155°3 1°26 1877°7 8n 
a. Durnham- -...... .-- 150°0 1:06 1878°4 In 
There is a third extremely faint star: 
Newcomb __.. 222... P=261°°7 D==15"'10 §=1874°7 In 
BAT Oc. Sti Sea 260°3 1568 18769 In 
No. 14. 78 Pegasi. 
. n unequal, but not very difficult pair, discovered in Nov., 
1875, with the 12-inch glass now at the Morrison Observatory, 
Glasgow, Missouri. Dembowski gives its magnitudes: 5°0 
yellow, 8-1 olive. The only measures are: 
Dembowski..._._...P==192°-0 D=1"-45 18766 4n 
Purnhat .... ..- ao. 190°8 154 18788 In 
Chicago, March 1, 1879. 
RT. XO Views Underground Temperatures on the Comstock Lode ; 
by Jonn A. Cuurca, Professor of Mining, Ohio State Uni- 
versity, Columbus, Ohio. 
ottest water reported in a Welsh mine had a temperature of 
125° F. (J. A. Philli ps). All of these observations are su 
by the extraordinary conditions of the Comstock. 
is examinati de in connection with the United States Survey of the 
Territories west othe: 4000 taatiliet in charge of Lieut. Geo. M. Wheeler, 
Corps of Engineers, U. 8. A. 
