Recoed of Gteology op Texas, 1887 -1896. 
219 
Eoesler, F. E. 
Semi-arid Region, District No. 2. That part of Texans lying between the 
one-hundredth and one-hundredth and third meridians north of the Pecos 
and after its junction with the Rio Grande north of. that river to the one- 
hundredth meridian. Lisit of Railway Stations and their Altitudes. Flow- 
ing Artesian Wells. Negative Artesian Wells. Stratification of wells. 
_ District No. 1, Subhumid Region. Flowing Artesian Wells, Common 
Wells, Lakes, Storage Reservoirs, and other Waters used for irrigation. 
District No. 3, Arid Region. That part of the State lying west of the one- 
hundredth and third meridian and sorith of the Pecos from its junction with 
this meridian to its mouth. Railway Stations and their Altitudes. Flow- 
ing Artesian Wells at Pecos City. Flowing Wells at Toyah. Other Deep 
Wells in District No. 3. Stratification of Wells in District No. 3. List 
of Wells drilled by Lanoria Mesa Company, ten miles northeast of El 
Paso. 
Prices per foot paid for well borings in Texas. 
Local Opinions as to the presence or absence of Artesian Waters. 
District No. 2, Semi-arid Region. 
Springs West of the Ninety-seventh Meridian, District No. 1. Springs 
in District No. 2. 
‘District No. 3, and Region. 
345. Eolker, Charles M. 
The Production of Tin in various Parts of the World. 
16th Annual Eept. of the U. S. Geol. Surv., Pt. Ill, pp. 458- 
538. Washington, 1895. 
(Tin in Texaa), pp. 528-5,29. 
“In 1889, Professor Theo. R. Comstock announced that he had received 
a small crystal of cassiterite from Llano county. Later, in the Second 
Annual Report of the Geological Survey of Texas, Professor Comstock 
announced the result of his geological examination of the territory in Cen- 
tral Texas likely to prove stanniferous. In this report Dr. W. von Streeru- 
■witz also recorded his discoveries in Western Texas, and to these accounts 
the reader is referred for detailed information. Protfessor Comstock points 
out the faet that the mineral keilhanite (littrotitanite) is likely to be mis- 
taken for tin, except after close testing, but as it, like garnet, tourmaline, 
etc., occurs in bands different from those in which cassiterite is found, a 
knowledge of the structural geology of the district will make prospecting 
easier.” Then follows an account of the belt by Professor Comstock, from 
which this statement is taken: 
“The most favorable points, judging from the knowledge thus far 
acquired, are in the region about Barringer Hill and westward in Llano 
county, and in the country about the head waters of Herman and Willow 
creeks, in Mason county.” P. 529. 
