276 
Transactions Texas Academy of Science. 
ADDITIONAL CITATIONS. 
141. Birkenbine^ John. 
Art. Iron Ores. 
Eeport on Mineral Industries in the U. S. at the Eleventh 
Census, 1890. 
(Produot and Yalne of Iron Ore in Texas, 1889), p. 4. 
Washington, 1892. 
Extract from a table showing the ‘‘Product and Value of Iron Ore in 
1889, by States and Territories”: 
(Long Tons.) 
STATUS. 
Number 
of Mines 
reporting. 
Number 
of Mines 
producing. 
Amount 
produced. 
Stock on 
hand Jan. 
1, 1889. 
Stock on 
hand .Jan. 
1. 1890. 
Total 
value of 
production. 
Value 
j per ton. 
Texas 
B 
2 
13,000 
200 
1,300 
$ 19,750 
$ 1 52 
442. (Day, David T.) 
Art. Tin. 
Eeport on Mirueral Inldnstries in thie U. S., ait the Eleventh 
Census, 1890. 
(Tin in Texas), p. 251. ^Washington 1892. 
An announcement of the discovery of eassiterite in Llano and Mason 
counties by Professor Theodore B. Comstock. 
443. Day, William C. 
Art. Stone. 
Eeport on Mineral Industries in the U. S., at the Eleventh 
Census, 1890. 
(Production of G-ranite in Texas), p. 603. Washington, 
1892. 
'Extract from a table showing the “Production of Granite in the United 
States for the Calendar year 1889, by States and Territories”: 
STATES AND TERRITORIES. 
Number of 
firms pro- 
ducing in 
1889. 
Number of 
Product. 
quarries. 
Cubic feet. 
Total value. 
Texas 
8 
8 
20,400 
$ 22,550 
