ti 
weeks.] PALEONTOLOGY, PETROLOGY, AND MINERALOGY, 190-4. 51 
Foerste (August F.). 
1. Variation in thickness of the subdivisions of the Ordovician of 
Indiana. With notes on the range of certain fossils. 
Am. Geol., vol. 34, pp. 87-102, 1 pi., 1904. 
2, The Ordovician-Silurian contact in the Ripley Island area of south- 
ern Indiana, with notes on the age of the Cincinnati geanticline. 
Am. Jour. Sci., 4th ser., vol. 18, pp. 321-342, 2 pis. (maps), 1904. 
Discusses the stratigraphic evidence for the time of formation of the Cincinnati 
geanticline, the occurrence, character, and relations of Ordovician and Silu- 
rian formations in Ohio, Indiana, and Kentucky, and gives observations 
upon the stratigraphic position of various fossils, the relationships of Silurian 
faunas of Indiana with those of New York, and lists of Niagara fossils of 
Indiana. 
5. Description of the rocks formed in the different geological periods 
in Indiana: Ordovician and Silurian. 
Ind., Dept. Geol. & Nat. Res., 28th Ann. Rept., pp. 21-39, 1904. 
oote (W. M.). 
Complete mineral catalog. Part I, Mineral collections and material 
for the laboratory. Part II, Descriptive account of choice 
specimens. Meteorites. Price list of individual specimens. 
Classified table of minerals, according to Dana's System, with 
index. Metallurgical classification of minerals. 
Philadelphia, Foote Mineral Company. 215 pp., 29 pis. [1904]. 
f'orstner (William). 
Genesis of ore deposits at the Royal mine, Hodson, Cal. 
Mg. & Sci. Press, vol. 88, pp. 314-315, 7 figs., 1904. 
Describes the occurrence and geologic relations of the ore bodies and discusses 
their origin. 
The quicksilver deposits of California. 
Eng. & Mg. Jour., vol. 78, pp. 385-386, 426-428, 5 figs., 1904. 
Discusses the occurrence and origin of quicksilver ore deposits of California. 
•''owler (George L.). 
The coals and coal-mining methods of the Pocahontas field. 
Eng. Mag., vol. 27, pp. 217-232, ill., 1904. 
Describes the geologic occurrence, fuel value, and mining methods of the 
Pocahontas coal. 
'raas (E.). 
. Geologische Streifziige durch die Prarien und Felsengebirge 
Nordamerikas. 
Wiirttemberg, Jahreshefte des Vereins fur vaterliindische Naturkunde, Stutt- 
gart, Jahrg. 58, pp. LXV-LXVIII, 1902. 
Contains observations on the Jurassic strata of Wyoming and their vertebrate 
fossils, and the Bad Lands of South Dakota. 
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