83 
Record of Geology of Texas, ISSl-lSOG. 
Bumble, Edwin T. 
“Among the specimens colleeted by Ool. J. L. Tait, on his trip to iSouth- % 
west Texas last November, was a small piece of dark-blue limestone thor- 
oughly imipregnated with bitumen. The rains were so continuous, how- 
ever, that no detailed examination could be made, but later advices inform 
us that the quantity is equal to all demands, and a somewhat larger spec- 
imen was obtained and subjected to analysis, with the result of proving 
it almost identical in composition with that of Val-de^Travers, as will 
be seen by the following: 
“Val-de-'Travers : 'Bitumen, 20 per cent.; limestone, 80 per cent. Uvalde 
county: Bitumen, 20.35 per cent.; limestone, 79.65 per cent. 
“This, we think, will prove to be of great and lasting benefit to the 
iState. .In addition to this, many deposits of bituminous sands or shales 
occur, which yield ten per cent., and sometimes a larger amount, of bitu- 
men.” 
115. 
PetTified' Wood. 
Geol'Ogical and Scientific Bulletin, Vol. I, No. 12. Houston, 
April, 1889. 
“Dr. Boemer, in ‘Kreidebildungen von Texas,’ ascribes the origin of the 
silicified wood he observed in Texas to Tertiary time on two grounds. 
First, because it was found in large quantities at Booneville, near the 
iBrazos river, in a sandstone which was immediately underlaid by un- 
doubted Tertiary strata ; and, second, because of its generic character, but 
states that nowhere was the presence of wood in Tertiary strata determined 
by direct observation. 
“It was the good fortune of Dr. Penrose and myself, on our late trip 
down the Colorado, to prove the corrfectness of this opinion, and supply the 
missing evidence. Below Bastrop, in undoubted Eocene strata, we found 
petrified wood in place. It was of the usual grayish color. Further down 
the river, in the lignite beds, we had still stronger proof. Here we found 
many large logs imbedded in the lignite, and on careful examination we 
found that while the outer portion was in most instances converted into 
lignite, the centre, although equally black in color, was silicified. The 
interior portion corresponded exactly with specimens found some years ago 
in the drift in the vicinity of La Grange, the source of which is now 
readily apparent. As I have stated before in these columns, the specimens 
of petrified wood in Eastern Texas, which seemed to be in place, were 
usually in the red clay underlying the gravel.” 
116. , State Geologist. 
Texas Geological and Mineralogical Survey. First Report of 
Progress, 1888, 78 pp. Austin;: State Printing Office, 1889. 
Letter of Transmittal by L. L. Foster, Commissioner of Agriculture, 
Insurance, Statistics and History. Letter of Transmittal by E. T. Dumble, 
(State Geologist* (First Beport of Progress by E. T. Dumble. Report of 
the Geologist for Western Texas by W. von Streeruwitz, iC. E., M. E. 
(Table showing Rainfall at Fort Davis and Surrounding Circle of Coun- 
