Record op Geology of Texas, 1887-1896. 
197 
Marcou, Jules. 
Amer. Geologist, Vol. X, pp. 369-377. Minneapolis, Dec., 
1892. 
This paper is of a eointroversial character consisting mainly of a criti- 
cism of the work of Mr. iW. F. Cummins, as published in the Second and 
Third Annual iBeports of the iGeologieal Survey of Texas, with reference to 
the classification, noraenc-rature, lithology, and paleontology of the strata 
in Northwest Texas, in which the writer points out what he conceives to be 
errors. ‘Both Professor Cope and iMr. Cummins are severely criticised for 
not giving the localities and “minute stratigraphic position of the Texas 
fossil vertebrates.’^ The author disagrees with (Mr. Cummins in his identi- 
fication of Big Tucumcari Mountain (p. 372). The paper closes with a 
table giving Mr. Cummins’ Classificataon iof 'Strata in Northwest Texas 
and New Mexico, made in 1890-91, and Mr. Maroou’s, made in 1853, in 
parallel columns. 
300. 
Remarks on a part of the Review of the Third 'Texas Report. 
Correspondence. 
Amer. Geologist, Yol. XI, pp. 212-214. Minneapolis, 
March, 1893. 
Another paper of a controversial character concerning the age of the 
Tucumcari Beds in New Mexico, chiefly a criticism of the correlations of 
Professor 'Hill. Hill’s Series of 1892 and the author’s (Miaroou’s) of 1853, 
are published in parallel columns (p. 213). The author maintains the 
Jurassic age of the Tucumcari Beds. 
301. 
Growth of Knowledge concerning the Texas Cr'etaceou®. 
Amer. Geologisit, Yol. XIY, pp. 98-105. Minneapolis, Aug., 
1894. 
A criticism of Professor HiU’s paper entitled “Geology of parts of Texas, 
Indian Territory and Arkansas adjacent to Bed Biver” (Bull. Geol. Soc. 
Amer., Vol. V, pp. 297-338). The views of Professor Hill, the author 
contends, need many corrections, and he proceeds to review briefly the work 
of Boemer, G. G. Shumard, himself (Maroou) and Hill. The confusion 
arising from the incorrect determination of certain species of Gryphaea 
is pointed out. The paper closes with a “Table of Evolution of Knowledge 
of the Texas Gretaceous,” as conceived by the author. 
302. 
The Jura of Texas. 
Proceedings of the Boston Soc. of Xat. Hist., Yol. XXYII, pp. 
149-158. 1896. 
A historical sketch of the Jura in Texas with references to Oapt. John 
Pope’s “Beport of Exploration of Boute for the Pacific Bailroad near the 
Thirty-second Parallel,” 1854; Marcou’s “Geological Beport,” 1855; Mar- 
