118 
Transactions Texas Academy oe Science. 
Geological and Scientific Bulletin. 
“Tlie iState Geologist, in company with Dr. Penrose, made a trip down 
the 'Colorado river from lAiistin to La Grange to secure as complete a 
section of the Tertiary formation as possible, and to determine the true 
sequence-of the different beds already known to occur in it. The trip was 
made in a row boat, and required nearly six days for its completion. The 
results were highly satisfactory, and will go very far toward giving us a 
correct idea of the Tertiary history of the State. Lignites were found 
in abundance. 'Many fine beds , of fossils were observed, and as full col- 
lections made as the time permitted. 'Near La Grange a fine deposit of 
palm imipressions was found in a bed- of sandstone, accompanied by pieces 
of the trunks and stems silicified. Among the fossils taken were those 
of the characteristic iEocene species of shells with shark teeth and corals.” 
iBrief mention is made of the work of Messrs. Penrose, Streeruwitz, 
Cummins, Jermy, Taff, and Huppertz. 
173. Gilbert, G. K. 
Administrative Report. 
'Eleventh Ann. Rept. JJ. S. Geol. Survey, Part I, Geology. 
Washington, 1890. 
(Work in Texas, pp. 58-59.) 
“A study of the Cretaceous formations in Texas, begun some years ago 
by Mr. Robert T. Hill and temporarily discontinued, was resumed last 
summer as a joint woik of the iGeological Survey of Texas and the 
U. iS. Geological Survey. The upper and lower boundaries of the system 
were traced and mapped from the Colorado river northward to the Red 
River, and the principal subdivisions also were outlined between the 
Brazos and Red rivers. The larger share of the expense of the recent 
work was borne by the State Survey, and it is arranged that the most 
comprehensive publication of the scientific results shall appear in the 
forthcoming first annual report of the !State Geologist.” 
174. Goldsmith, E. 
Gadolinite from Llano County, Texas. 
Proc. Acad, of Eat. Sciences, Phila., Part II, pp. 164-165. 
iMay-'Sept., 1889. 
‘The specimen so called which came from the above locality is in the 
r\Vm. M. Vaux collection of the Academy, and is of unusual size. It 
appears as a rough orthorhomibic crystal. A piece broken off at one end 
revealed the fact that the crystal was not homogenous throughout. Within, 
a glassy material, surrounded by a rather thick layer of perfectly dull 
appearance, indicated that it was made up of at least two different min- 
erals. I procured from the minerial dealer fragments of these two sub- 
stances for investigation. The inner or vitreous substance proved to be 
Gadolinite. Iln mass the color is deep black and opaque, but wihen a thin 
plate is prepared by grinding, it appears green. Beneath the microscope 
apparently all is homogenous, only a few minute black spots are noticed. 
“Fracture Qonchpidal and uneven. Hardne3s=6. tSp. gr.==4.276, It 
