weeks ] PALEONTOLOGY, PETROLOGY, AND MINERALOGY, 1896. 25 
97 Campbell (Marius R.). Drainage modifications and their interpre- 
tation. 
Jour, of GeoL, vol. iv, pp. 567-581 ami 657-678, 1896. 
Discusses the principles of drainage modification, the criteria for deter- 
mining stream modifications, and the characteristics of Appalachian 
drainage. 
98 Rapid section work in horizontal rocks. 
Am. Inst. Mg. Engrs., Trans., vol. xxvi, pp. 298-315, pis. i-iv, 1896. 
Describes methods of studying areal geology in regions where the 
strata lie in a nearly horizontal position. 
99 and Mendenhall (Walter C). Geologic section along the 
New and Kanawha rivers in West Virginia. 
U. S. Geol. Surv., 17th Ann. Rept., Pt. II, 39 pp., pis. xxxviii-xlix, 
1896. 
Describes the physiography, geologic structure, and stratigraphic 
features of the members of the Carboniferous series, and the occurrence 
of coal, and gives chemical analyses. Includes a sheet of geologic cross 
sections. 
100 Carlyle (William A.). Report on Trail Creek Mining District, 
British Columbia. 
Mining and Scientific Press, vol. lxxiii, pp. 236-237; Mining, vol. ii,pp. 
95-100, 124-128, and 143-151, 1896. 
Describes briefly the occurrence of the gold, silver, and copper ores 
and the associated igneous rocks on pages 144-147. 
101 Report on the Slocan, Nelson, and Ainsworth mining districts 
in West Kootenay, British Columbia. 
Bureau of Mines, B. C, Bull. No. 3, 95 pp. with map, 1896. 
Describes the general geology of the region, the occurrence of the 
igneous rocks, and of the gold and silver lead ores. 
102 Carnot (Adolphe). Sur les variations observees dans la composi- 
tion des apatites, des phosphorites, et des phosphates sedi- 
mentaires. Remarques sur le gisement et le mode de forma- 
tion de ces phosphates. 
Annales des Mines, vol. x, pp. 137-231, 1896. 
Discusses the character and formation of the South Carolina and Flor- 
ida phosphate deposits. 
103 Chalmers (Robert). Report on the surface geology of eastern 
New Brunswick, northwestern Nova Scotia and a portion of 
Prince Edward Island. 
Canada Geol. Surv., new ser., vol. vii, Rept. M, 149 pp., 5 pis., 1896. 
Describes the physiography, the character and distribution of the 
Pleistocene deposits, and glacial geology of the region. Discusses the 
evidences of Tertiary and post-Tertiary changes of level. 
101 Pleistocene marine shore lines on the south side of the St. 
Lawrence Valley. 
Am. Jour. Sci., 4th ser., vol. i, pp. 302-308, 1896. 
Describes the topographic character of the region and the occurrence 
of the terraces. Gives a table showing the elevation of the shore lines 
along the north side of Notre Dame range, south of the St. Lawrence. 
