222 
Transactions Texas Academy of Science. 
Schmitz, E. J. 
the copper ores of the former occur prevailingly as separate pieces, nug- 
gets and nodules, collected or grouped to irregular pockets or deposits, the 
copper ore of the Kupferschiefer is concentrated in one continuous thin 
layer of that formation. 'Moreover, the copper ores of the Texas Permian 
.are principally carbonates and silicates or silicious carbonates; while 
those of the German Permian are mostly sulphurets, deposited in very fine 
particles. 
“But somewhat similar conditions must have existed during the process 
of deposition in both form'ations.” 
347. Science. 
Texas Asplialtum. 
Yol. XIII, p. 295. Apr. 19, 1889. 
See No. 114, Dumble, E. T., “Texas Asphaltum,” Geologic and Scientific 
Bulletin, Vol. I, No. 11, March, 1889. 
348. Scott, W. B. 
A Question of Priority. 
(Correspondence.) 
Amer. Geologist, Vol. XVII, p. 58. Minneapolis, Jan., 
1896. 
A statement from Professor iScott concerning the use of “Palo Dura” for 
certain Tertiary deposits that (unknown to him at the time) had been pre- 
viously designated by W. F. Cummins, oif the Geol. Surv. of Texas, as the 
“Goodnight beds”; also an explanation of the use of Palo Duro in the 
Fourth Edition of Dana’s Manual of Geology. 
“iSo far as I am aware, the name ‘Goodnight beds’ has not yet been used 
by others than Mr. Cummins; it is, therefore, quite within his power to 
change it for one less objectionable, and it is much to be hoped that he 
will do so. As the credit of the discovery is entirely his, whatever name 
he decides to employ will stand.” P. 58. 
See Title No. 82. 
349. Shaler, X. B. 
Evidences as to Change of Sea Level. 
Bull. Geol. Soc. Amer., Vol. VI, pp. 141-166. 1895. 
Reference to Texas, p. 154. 
“Beginning the consideration of this continent with the isthmus of 
Darien and proceeding northward, we observe that the coast line shows 
little evidence which can be interpreted as indicating flooded valleys, or, 
in other words, a recent depression of the shore, until we reach the northern 
limit of Mexico. Then along the eastern side of the continent to the north- 
ward the signs indicating recent downw;ard movement appear to me evident 
and to indicate a progressive subsidence of a uniform nature to near the 
pole. Keentrant valleys begin to be indicated along the Texas shore.” 
