54 BIBLIOGRAPHY AND INDEX OF N. A GEOLOGY, [bull. 149 
371 Kemp (James Furman). Illustrations of the dynamic metamor- 
pbism of anortbosites and related rocks in the Adirondacks. 
Abstract: Geol. Soc. Am., Bull., vol. vii, pp. 488-489, 1896. 
Gives a "brief description of intrusive gabbros associated with crys- 
talline limestones and gneisses of sedimentary origin. 
372 Lecture notes on rocks. 
School of Mines Quart., vol. xvii, pp. 38-56, 128-159, 267-295, and 401- 
434, 1896. 
Discusses the classification of rocks and the chemical and petio 
graphic characters of igneous rocks. Describes the formation and char- 
acter of sedimentary deposits and the rocks produced by contact and 
regional metamorphism. 
372a A handbook of rocks for use without the microscope. 
N. Y., 1896, 176 pp. 
373 The great quartz vein at Lantern Hill, Mystic, Conn., and its 
decomposition. 
Abstract: N. Y. Acad. Sci., Trans., vol. xv, p. 189, 1896. 
Gives a brief statement of the occurrence of the vein and the micro- 
scopic character of the material. 
374 The pre-Cambrian topography of the Adirondacks. 
Abstract: N. Y. Acad. Sci., Trans., vol. xv, pp. 189-190, 1896. 
Discusses briefly the evidences as to the general features of pre-Cam- 
brian topography. 
375 [Review of "Geologic Survey of New Jersey. Annual report 
of the State geologist for the year 1894."] 
Science, new ser., vol. iv, pp. 693-694, 1896. 
376 [Origin of ore deposits.] 
Can. Rec. Sci., vol. vii, pp. 189-191, 1896. 
Discusses briefly the origin of ore deposits in igneous magmas. 
377 An outline of the views held to-day on the origin of ores. 
Mineral Industry, 1895, pp. 755-766, 1896. 
Reviews the published opinions of certain geologists on the origin of 
ore deposits. 
378 Kempton (0. W.). The tin deposits of Durango [Mexico]. 
Am. Inst. Mg. Engrs., Trans., vol. xxv, pp : 997-998, 1896. 
In discussion of paper on the same subject by W.'R. Ingalls, mentions 
an occurrence of tin placers at Sain Alto, Zacatecas, Mexico. 
379 Kendall (Percy F.). The ancient and modern glaciers of Forth 
America. 
Abstract: Leeds Geol. Assoc, Trans., Pt. IX, pp. 37-41, 1895. 
Describes preexisting and present glacial phenomena in North 
America. 
380 Keyes (Charles Eollin). Organization and results of a State 
Geological Survey, embracing the Third Biennial report of 
the State Geologist [Missouri]. 
Mo. Geol. Surv., vol. viii, pp. 14-79, 1895. 
Describes the general plan of the organization, the progress of the 
work, prospective work, and the future operations of the Missouri Geo- 
logical Survey. 
