36 
105 Ells (R. W.) The geology of the Ottawa and Parry Sound railway 
[Ontario]. 
Ottawa Nat., vol. x, pp. 165-173, 1896. 
Describes the local geology along the route. The rocks are mainly 
Silurian. 
196 and Barlow (A. E.). The physical features and geology of 
the route of the proposed Ottawa canal between the St. 
Lawrence River and Lake Huron. 
Canada Roy. Soc, Proc. and Trans., 2d ser., vol. i, sect, iv, pp. 163-190, 
with geologic map, 1896. 
Describes the drainage and physical features, and reviews the work of 
various geologists in this region. 
197 Elmore (O. J.). Fossil Diatomaceai from Nebraska and their rela- 
tions to modern species. 
Torrey Bot. Club., Bull., vol. xxiii, pp. 269-275, 1896. 
Describes the general features of the deposits, discusses the relation 
of the diatoms to modern species and gives a list of the species de- 
termined. 
198 See Barbour (E. H.), No. 31. 
199 Emerson (B. K.). Geology of Old Hampshire County, in Massa- 
chusetts. 
Abstract. Geol. Soc. Am., Bull., vol. vii, pp. 5-6, 1896. 
Describes briefly the character and distribution of the pre-Cambrian, 
Triassic, and Quaternary rocks. 
200 Emmons (Samuel Franklin). The mines of Ouster County, Colo- 
rado. 
U.S. Geol. Surv., 17th Ann. Rept. Part II, pp. 111-472, pi. xxxvii, iigs. 
38-43, 1896. 
Describes the character and mode of occurrence of the gold and silver- 
bearing ores and discusses their origin. Includes analyses of sinters and 
waters from 500 and 2,000 feet levels of the Geyser Mine. See Cross 
(W.) No. 149. 
201 Some mines of Eosita and Silver Cliff, Colorado. 
Am. Inst. Mg. Engrs., Trans., vol. xxvi, pp. 773-823, 1896. 
Describes the geologic history of the region, and the occurrence and 
character of the ore bodies in the principal mines. Discusses their origin. 
Gives chemical analyses of waters from deep levels in the Geyser mine 
and a discussion of the results. 
202 Cross (Whitman), and Eldridge (George H.). Geology of 
the Denver Basin in Colorado. 
U. S. Geol. Surv., Mon. xxvii, 556 pp., 31 pis., 102 tigs., 1896. 
Chapter I is a description of the physiography, and historical and 
structural geology of the region. Chapter II describes the lithologic 
characters, distribution, and structure of the Jurassic and Cretaceous 
subdivisions. Chapter III comprises an account of the stratigraphy 
and age of the Arapahoe, Denver, and Monument Creek formations. 
Chapter IV describes the character and distribution of the Pleistocene 
deposits. Chapter V is a description of the geological occurrence and 
petrographic characters of the igneous rocks. Chapter VI describes the 
occurrence of coal and clay and the artesian wells of the region. In- 
cludes topographic, geologic, structure section maps and columnar 
sections in pocket. 
