36 BIBLIOGRAPHY AND INDEX OF N. A. GEOLOGY, [bull. 146. 
131 Ells (E. W.). The Rensselaer grit plateau. 
Ottawa Nat., vol. ix, pp. 9-11. 
Reviews a paper by T. Nelson Dale on the same subject and refers to 
the work of J. W. Dawson in the same region and in the vicinity of 
Quebec. 
132 How rocks are formed. 
Ottawa Nat., vol. ix, pp. 157-106. 
Discusses the theories of rock formation and describes the process of 
formation of the deposits in the vicinity of Ottawa, Canada. 
133 Notes on recent sedimentary formations on the Bay of Fundy 
coast [Nova Scotia]. 
Nova Scotian Inst, of Sci., Proc. and Trans., vol. viii, pp. 416-419. 
Describes beds of limestone and shale overlying the trap rocks of the 
region. 
134 Emerson (Benjamin Kendall). A uiiueralogical lexicon of Frank- 
lin, Hampshire, and Hampden counties, Mass. 
U. S. Geol. Surv., Bull. No, 126, 180 pp. 
Consists of a condensed history of minerals occurring in these coun- 
ties, chemical analyses of some of the species, and a bibliography of the 
literature. 
135 Illustrations of peculiar mineral transformations. 
Geol. Soc. Am., Bull., vol. vi, pp. 473-474. 
Mentions the occurrence of serpentine pseudomorphs after olivine and 
calcito pseudomorphs after salt, and describes the puckering of corundum 
crystals around allanite. 
13G Emmons (Samuel Franklin). Economic geology of the Mercur 
mining district, Utah. Introduction. The Oquirrh Moun- 
tains. 
U. S. Geol. Surv., 16th Ann. Kept., part ii, pp. 349-369. 
Describes the topography and gives an account of the discovery, de- 
velopment, and production of the mining district. Describes the struc- 
ture of the range, the occurrence of the sedimentary and igneous rocks 
and the general economic geology of the district. 
F. 
137 Fairbanks (Harold W.). On analcite diabase from San Luis 
Obispo County, California. 
Univ. of Cal., Dept. of Geol., Bull., vol. i, pp. 273-300, pi. 16. 
Describes the field relations, contact metamorphism, and the micro- 
scopic and chemical characters of these rocks. 
138 The stratigraphy of the California Coast ranges. 
Jour, of Geol., vol. iii, pp. 415-433. 
Describes the character, position, and faunal relations of the Golden 
Gate series and discusses the evidences of a nonconformity between the 
Knoxville and Golden Gate beds, between the Chico and Knoxville, and 
between the Miocene and Chico-Tejon series. 
