88 BIBLIOGRAPHY OF NORTH AMERICAN GEOLOGY, [bull. 271. 
Michel-Levy (Auguste). 
1. L/eruption de la montagne Pelee et les volcans des Petites Antilles, j 
Revue gen. des Sciences, t. 13, pp. 554-557, 3 figs., 1902. 
Discusses the broad problems of volcanic activity in the West Indies and other 
parts of the world. 
Mickle (G. JR.). 
1. Volcanic origin of natural gas and petroleum. 
Can. Mg. Inst., Jour., vol. 6, pp. 123-126, 1904. 
Miller (G. W.). j 
1. Geology of the Butte mining district [Montana]. 
Ores & Metals, vol. 13, no. 10, pp. 15-16; no. 11, pp. 10-20, 3 figs., 1004. 
Describes the mining of silver and copper ores, the general geology and the 
occurrence, character, and origin of the veins and fissures. 
Miller (Willet G.). 
1. Cobalt-nickel arsenides and silver. 
Out. Bur. Mines, Rept,, 1904, pt. 1, pp. 96-103, 5 pis., 1904 
Describes the occurrence, character, an<l geological relations of ore deposits of 
nickel-cobalt arsenides and silver in the northern part of Ontario. 
2. Undeveloped mineral resources of Ontario. 
Canadian Mg. Inst., Jour., vol. 7 (advance separate), 20 pp., 1904. 
Discusses the occurrence of minerals of economic value in the Province of 
Ontario. 
Mills (S. Dillon). 
1. Some recent rock movements in the Laurentian and Huronian areasi 
[Ontario]. 
Can. Mg. Rev., vol. 23, pp. 174-177, 1904. 
Mills (W. Magoon). 
1. A physiographic and ecological study of the Lake Eagle (Winona 
Lake) region, Indiana. 
Ind., Dept. Geol. & Nat. Res., 28th Ann. Rept., pp. 377-394, 3 pis., 4 figs., 
1904. 
Includes observations on the physiographic features of the region. 
Moffit (Fred H.). 
1. The Kotzebue placer-gold field of Seward Peninsula, Alaska. 
U. S. Geol. Surv., Bull. no. 225, pp. 74-80, 1904. 
Describes the general geology, and the occurrence and mining of placer gold. 
Moissan (Henri). 
1. Sur la presence de I'argon dans les gaz des fumerolles de la 
Guadeloupe. 
Acad, des Sci. [Paris], Compt. rend., t. 138, pp. 936-938; 1904. 
Describes the chemical analyses of gas from fumaroles of Guadeloupe. 
2. Nouvelles recherches sur la meteorite de Canon Diablo. 
Acad, des Sci. [Paris], Compt. rend., vol. 139, pp. 773-780, 2 figs., 1904. 
Abstract: Am. Jour. Sci., 4th ser., vol. 19, p. 191, 1905. 
Describes the characters and composition of this meteorite. 
If 
H 
II 
