veeks] PALEONTOLOGY, PETROLOGY, AND MINERALOGY, 1904. 57 
3-rant (U. 8.). 
Investigations on the Lake Superior iron ore deposits. 
Mg. Mag., vol. 10, pp. 175-183, 6 figs., 1904. 
Describes the general geology of the region, and the occurrence, geologic rela- 
tions, character, and origin of the iron ore deposits. 
Field work in the Wisconsin lead and zinc district. 
Abstract: Geol. Soc. Am., Bull., vol. 15, pp. 552-558, 1904; Science, new ser., 
vol. 19, p. 526, 1904; Sci. Am. Suppl., vol. 57, p. 23446, 1904; Eng. & Mg. 
Jour., vol. 77, p. 74, 1904. 
Describes briefly the method adopted in a combined topographic, geographic, 
and geologic survey in this region. 
A pre-Glacial peneplain in the driftless area. 
Abstract: Science, new ser., vol. 19, p. 528, 1904; Sci. Am. Suppi., vol. 57, p. 
23446, 1904. 
xratacap (L. P.). 
Vade mecum guide. A popular guide to mineral collections. With 
a chapter on the development of mineralogy. 
New York, The Broadway Press, no date. 178 pp., illus. 
Geology of the City of New York (Greater New York), with geo- 
logical map. Second edition. For use in schools, institutes, 
and classes. 
New York, Brentano's, 1904. 119 pp., 35 figs, and geol. map. 
reene (George K.). 
Contribution to Indiana paleontology. Part XVII. 
New Albany, Ind., pp. 168-175, 3 pis., 1904. 
Contains descriptions of Devonian and Carboniferous corals by George K. 
Greene, and of Carboniferous echinoderms by R. R. Rowley. 
Contribution to Indiana paleontolog}^. Part XVIII. 
New Albany, Ind., pp. 176-184, 3 pis., 1904. 
Contains descriptions of Devonian and Carboniferous corals by George X. 
Greene, and of Devonian and Carboniferous echinoderms by R. R. Rowley. 
I. Contribution to Indiana paleontology. Part XIX. 
New Albany, Ind., pp. 185-197, 3 pis., 1904. 
Contains descriptions of Devonian, Silurian, and Carboniferous corals by G. K. 
Greene, and of Carboniferous and Devonian echinoderms by R. R. Rowley. 
The latter contributes a review of Dr. G. Hambach's Revision of the Blas- 
toideas. 
Contribution to Indiana paleontolog3 T . Part XX. 
New Albany, Ind., pp. 198-204, pis. 58-60, 1904. 
Contains specific descriptions of Devonian corals by George K. Greene. 
Parts I-XX, February, 1898, to September, 1904, form volume 1 of the "Con- 
tribution to Indiana paleontology." 
2-reger (D. K.). 
The distribution and synonymy of Ptychospira sexplicata (White and 
Whitfield). 
Am. Geol., vol. 33, pp. 15-17, 1904. 
