CRAGiN.] HISTORY OF GEOLOGICAL STUDIES. 11 
No opportunity for further investigation of the Malone fauna was 
presented until 1895. In March of that year the late Mr. Robert W. 
Goodell, assisted by his father. Mr. R. R. Goodell, made a journey to 
Guaymas, Mexico, to obtain recent marine invertebrates from some 
rich collecting grounds on which I had worked in the winter of 
1882-83. In returning, he very kindly undertook to visit Sierra 
Blanca and Quitman mountains, Bluff and other mesas, and the 
hills north to east of Malone, to seek further evidence concerning 
the age of the rocks that had yielded the Wyschetzki collection. 
From the Sierra Blanca Mountains and several other of the eleva- 
tions visited, which did not include Malone Mountain, the Messrs. 
Goodell brought back a large number of fossils, all of which were 
of the Comanche series save those from the hills a mile and a half 
Bast of Malone station. Those from the latter locality included, 
besides several of the species obtained there by Mr. Wyschetzki in 
1890, some specimens which the writer recognized as specifically 
identical with the Mexican Jurassic fossil, Pleuromya inconstans 
Castillo and Aguilera, and one example of an undescribed Trigonia 
~)i the Jurassic section Undulatae. A restudy of Trigonia vyschetzkii, 
)f which the Messrs. Goodell had obtained new material, led me to 
he conclusion that the affinities of that fossil also were Jurassic 
ather than Cretaceous. In 1896-97, therefore, I prepared a brief 
>aper on the "Discovery of marine Jurassic rocks in southwestern 
Texas," assigning to the Malone formation a stratigraphic place 
somewhat different from that given to the original "Malone beds" 
)f Mr. Taff, and announcing its Jurassic age. This article, which 
ncluded, from the field notes of Mr. Robert W. Goodell, the hitter's 
>ection of the hills northeast of Malone station, was published in the 
Journal of Geology, Volume V. pages 813-820. 
It was noted in this article that a comparison of the observations 
)f Mr. Goodell with those of Mr. Taff seemed to show petrographical 
pounds for a formational correlation of the hills northeast of Malone 
tation with the Malone beds of Malone Mountain. Such correla- 
ion, for a part of these hills and a part of the mountain, was con- 
irmed paleontologically by me in August, 1897, when I visited El 
'yschetzkii in profusion, has failed to yield a single fragment of the T. taffli. On the 
ther hand the fauna with which T. taffii is associated was examined by Doctor Stanton 
nd by me in 1897, both by a joint excursion to Bluff Mesa and by our independent 
xaminations of the W. F. Cummins Red Bull Canyon collection in the museum of the 
eologieal Survey of Texas, and was found to include, with some species hitherto unde- 
!ribed, others of the Glen Rose Cretaceous. 
In 1894 Mr. Cummins made a collection of fossils, including Trigonia taffli, near the 
outhern end of the Quitman Mountains, labeling it " Mule Canyon." An excursion to 
lule Canyon was made by Doctor Stanton and myself in 1897, but the fossiliferous rocks 
a its vicinity were found to contain Cretaceous fossils unlike those collected by Mr. 
ummins. Further search by Doctor Stanton in 1898 resulted in his discovering the 
)cality of the Cummins collection, which was found to be Red Bull Canyon, the designa- 
on, " Mule Canyon," having been used by Mr. Cummins on his labels through some 
aadvertence. 
