BIBLIOGKAPHY OF NORTH AMERICAN GEOLOGY, 1906-1907. 19 
Bain, H. Foster— Continued. 
105. What should appear in the report of a stale geologist? — Eeon. Geology, 
vol. 1, no. 5, pp. 484-487, no. 7, pp. 702-705, 1900. 
106. Some relations of paleogeography to ore deposition in the Mississippi 
Valley. — Congr. geol. intern., C. R. 10 e sess., Mexico. 1906, pp. 4X3-41M), 1907. 
Econ. Geology, vol. 2, no. 2, pp. 128-144, 1007. 
Discusses concentration of metals in sedimentary rocks, and more especially the con- 
centration of zinc and lead ores of the Mississippi Valley as affected by geographic con- 
ditions prevailing during Paleozoic sedimentation. 
107. I Review of] Special report on lead and zinc, hy B. Haworth and others 
(Kansas Univ. Geol. Survey, vol. 8). — Econ. Geology, vol. 2, no. 2, pp. 186-192, 
1007. 
108. The work of the [IllinoisJ State Geological Survey. — Western Soc. 
Bngrs., Jour., vol. 12, pp. 233-230, April, 1007; Illinois Soc. Engrs. and Survey- 
ors, 22d Ann. Rept., pp. 51-50, 1007. 
109. Petroleum in Illinois. — Eng. and Min. Jour., vol. 83, pp. 755-756, 2 
figs., April 20, 1907. 
110. Administrative report for 1906. — Illinois Stale Geol. Survey, Bull. no. 
4, pp. 0-35, 1 pi., 1007. [Also issued separately.] 
Includes notes on economic resources. 
111. Analysis of certain silica deposits. — Illinois State Geol. Survey, Bull, 
no. 4, pp. 185-180, 1007. 
112. Contributions to the study of coal. — Illinois State Geol. Survey, Bull, 
no. 4, pp. 187-188, 1007. 
113. The mineral industry in 1906 [Illinois]. — Illinois State Geol. Survey, 
Bull. no. 4, pi). 245-24(5, 1907. 
The production in the United States in 1005 of zinc and lead ores. — See no. 
2418. 
Baker, H. P. 
114. The holding and reclamation of sand dunes and sand wastes by tree 
planting.— Iowa Acad. Sci., Proc, vol. 13, pp. 200-214, 1906. 
Describes the origin of dunes. 
Baker, J. Willard. 
115. Monograph on meteorites. — Mineral Collector, vol. 12, no. 6, pp. 81-87, 
no. 7, pp. 97-103, 1905. 
Baker, M. B. 
116. Clay and the clay industry of Ontario. — Ontario, Bureau of Mines, 
Rept. 1906, vol. 15, pt. 2, 127 pp., 71 figs., 1906. 
Baldacci, L. 
117. II giacimento solfifero della Louisiana. [-The sulphur deposits of Louisi- 
ana.] — Italia, Ministero di Agricoltura, Industria e Commercio, PublicazionJ del 
Corpo reale delle Miniere, Roma, Tipografia Nazionale di <:. Bertero, 1906. 
43 pp., 9 pis. 
Baldwin^ A. L. 
The earth movements in the California earthquake of 1000.— See Hayford and 
Baldwin, no. 1114. 
Ball, Sydney H. 
118. Pre-Cambrian rocks of the Georgetown quadrangle, Colorado. -Am. 
Jour. Sci., 4th ser., vol. 21, pp. 371-389, May. 1906. 
Describes the topography and general geology, and the occurrence, character, and rela 
tions of the pre-Cambrian formations. 
