206 BIBLIOGRAPHY OF NORTH AMERICAN GEOLOGY, 1900-1907. 
Wright, Charles Will. 
2639. Nonmetallic products of southeastern Alaska. — U. S. Geol. Survey, 
Bull. no. 284, pp. 55-00, 1900. 
Gives notes upon the occurrence, character, production, etc., of marble, limestone, 
granite, gypsum, coal, and mineral and thermal springs. 
2640. A reconnaissance of Admiralty Island. — U. S. Geol. Survey, Bull. no. 
287, pp. 138-101, 3 pis., 4 figs., 1900. 
Describes the general geology, the geologic structure and stratigraphy, and the occur 
rence and character of deposits of gold and coal. 
2641. Lode mining in southeastern Alaska. — U. S. Geol. Survey, Bull. no. 
314, pp. 47-72, 1 pi., 1907. 
Gives an account of the geology, the occurrence and character of gold, silver, and 
copper ores, and the mining conditions of the various mining districts of southeastern 
Alaska. 
2642. Nonmetalliferous mineral resources of southeastern Alaska. — U. S. 
Geol. Survey, Bull. no. 314, pp. 73-81, 1907. 
Gives a brief description of the known workable deposits of granite, marble, and 
gypsum. 
2643. Recent changes in the ice fields of Glacier Bay, Alaska. — Abstract: 
Science, new ser., vol. 20, pp. 148-149, August 2, 1907. 
Lode mining in southeastern Alaska. — See Wright and Wright, no. 2054. 
Recent changes in the glaciers of Glacier Bay, Alaska. — See Wright and 
Wright, no. 2055. 
Wright, Fred Eugene. 
2644. [Report on] the Unuk River mining region of British Columbia. — 
Canada, Geol. Survey, Summ. Rept. for 1905, pp. 40-53, 1900; British Columbia, 
Ann. Rept.' Minister of Mines, for 1900, pp. OS-74, 1907. 
Describes briefly the geography, geology, and mineral deposits of the area. 
2645. Artificial wollastonite and pseudo-wollastonite. — Abstract: Science, 
new ser., vol. 23, pp. 32-33, January 5, 1900. 
2646. The determination of the feldspars by means of their refractive in- 
dices.— Am. Jour. Sci., 4th ser., vol. 21, pp. 301-303, May, 1900. 
2647. A modification of the Lasaulx method for observing interference figures 
under the microscope. — Am. Jour. Sci., 4th ser., vol. 22, pp. 19-20, 2 figs., July, 
1906. 
2648. Schistosity by crystallization. A qualitative proof. — Am. Jour. Sci., 
4th ser., vol. 22, pp. 224-230, 3 figs., September, 1900. 
2649. Optical study of the lime-silica series of minerals. — Am. Jour, Sci., 
4th ser., vol. 22, pp. 293-302, October, 1900. 
2650. Artificial mngnesian-pyroxenes and amphiboles. — Abstract: Science, 
new ser., vol. 25, pp. 389-390, March 8, 1907. 
2651. Methods of igneous intrusion. — Abstract: Science, new ser., vol. 25, 
p. 623, April 19, 1907. 
2652. Artificial production of gneissic structures by crystallization under 
stress. — Abstract: Science, new ser., vol. 25, p. 768, May 17, 1907. 
2653. The measurement of the optic axial angle of minerals in the thin 
section.— Am. Jour. Sci., 4th ser., vol. 24, pp. 317-369, 2 pis., 29 figs., October, 
1907. 
On wollastonite and pseudo-wollastonite, polymorphic forms of calcium meta- 
silicate; optical study.— See Allen and White, no. 27. 
Minerals of the composition MgSi0 3 ; a case of tetramorphism. — See Allen, 
Wright, and Clement, no. 28. 
