Authors Catalogue. 389 
Gallouedec, M. L. 
Man's dependence on the earth. (Appletons' Pop. Sci. Monthly, 
vol. 53, pp. 99-107, May 1898.) 
Gilbert, G. K. 
Description of the Pueblo quadrangle. (U. S. Geol. Survey, Geo- 
logic Atlas of the U. S., folio z^, Pueblo folio, Colo., 1897.) 
Goldsmith, E. 
VoJcanic rocks of Mesozoic age in Pennsylvania. (Acad. Nat. Sci. 
Phila., Proc, 1898, pt. i, pp. 90-97, pis. 2-5, 1898.) 
Goldsmith, E. 
The petrifaction of fossil bones. (Acad. Nat. Sci. Phila., Proc, 
1898, pt. I, pp. 98-100, 1898.) 
Grant, U. S. 
Sketch 01 the geology of the eastern end of the Mesabi iron range 
in Minnesota. (Engineers' Year Book. University of Minnesota, pp. 
49-62, 1898.) 
Griswold, L. S. 
The geology of Helena, Montana, and vicinity. (Jour, of the Ass. 
of Engineering Soc, vol. 20, no. i, Jan. 1898; 18 pp.) 
[Hawn, Frederick.] 
Major Frederick Hawn, by G. C. Broadhead. (Am. Geol., vol. 21, 
pp. 267-269. pi. 16, May 1898.) 
Hull, Edward. 
Professor J. W. Spencer on changes of level in Mexico. (Geol. 
Mag., new ser., dec. 4, vol. 5, pp. 193-195, May 1898.) 
Iddings, J. P. 
Chemical and mineralogical relationships in igneous rocks. (Jour. 
Geol., vol. 6, pp. 219-237, pis. 9-10, Apr. -May 1898.) 
Jaggar, T. A., Jr. 
Some conditons affecting geyser eruption. (Am. Jour. Sci., ser. 
4, vol. 5, pp. ZiyzzZ, May 1898.) 
keyes, C. R. 
Modern stratigraphical nomenclature. (Science, new sen, vol. 7, 
pp. 571-572, Apr. 22, 1898.) 
Keyes, C. R. 
The myth of the Ozark isle. (Science, new ser., vol. 7, pp. 588-589, 
Apr. 29, 1898.) 
Kirchhoff, Chas. 
Copper. (U. S. Geol. Survey, i8th Ann. Rept., pt. 5, pp. 185-235, 
1897.) 
Kirchhoff, Ghas. 
Lead. (U. S. Geol. Survey, i8th Ann. Rept., pt. 5, pp. 237-i262, 
1897.) 
Kirchhoff, Chas. 
Zinc. (U. S. Geol. Survey, i8th Ann. Rept., pt. 5, pp. 263-280, 
1897.) 
