206 
Transactions Texas Academy of Science. 
Parker, Edward Wheeler. 
the miarked developmen'ts of tlie lignite beds in tbe vicinity of Rockdale, 
Milam county. Milam county i'S credited with an output very lititle ishort 
of 100,000 tons, and this had much to do with the falling off in the total 
value. * 
w * * » * -Sf •» 
“'Considerable attention was given in 1895 to the extensive lignite beds 
in the vicinity of Calvert, Robertson county, and work of a development 
nature was carried on by the Calvert Coal and Clay* Company, with prom- 
ises of this also becoming an important producing region. * * * The 
physical properties of the lignites will not permit transportation to a great 
distance, nor will they .stand much increased cost in the way of freight. 
Lignite coal is also mined in Medina county, the product from which, added 
to that of Robertson and Milam counties, made the total output of lignite 
in 1895 124,343 short tons. 
“The bitumindhs mines of Erath, Parker, Maverick and Webb counties 
contributed their usual quota to the product of 189b. Mines have also been 
opened in Coleman, Montague, and Palo Pinto counties, and from the 
last mentioned an output of 12,500 tons was obtained in the four months 
the mines were operated.’’ 
Tables are given showing the “Coal product of Texas since 1889,” and 
the “Coal product of Texas in 1895, by counties.” 
319. 
Art. Asiplialtum. Min. Eesources of the TJ. S., 1895. 
htonmeta'llic Prodncts except Coal. 
17th Ann. Kept., II. 'S. Greological Snrvey, Part III (con- 
tinned) . 
(Asphaltnm in Texas), p. 754. Washington, 1896> 
“Asphaltum in one form or another occurs in iseveral localities in Texas. 
Those which have been developed are in Uvalde county, about six miles 
south of Cline iStation, on the Southern Pacific Railroad. The asphaltum 
occurs here, impregnating a bed of fossiliferous limestone. The deposit is 
large and easily mined, as very little overburden has to be removed before 
the material can be stripped off the surface. Extensive works have been 
erected for treating the asphalt, which is prepared and sold in two con- 
ditions, as mastic and gum. ^ * ,The city of Houston, Texas, has 
paved a number of streets with asphalt sheets made from the Cline mastic. 
“The more valuable condition in which the material is sold is that of 
refined or gum asphaltum. The owners have given this the name of ‘litho- 
carbon.’ * * Pour hundred and fifty tons of litho-carbon were ship- 
ped in 4895. '' * 
“There are also extensive beds of bituminous sandstone in the same 
county, near the town of Uvalde, but they have not been thoroughly pros- 
pected, and the interested parties are at present unwilling to make public 
their plans. iDeposits have also been prospected somewhat in Montague 
county, but no output of commercial importance had been obtained at the 
close of 1895.” 
