weeks.] PALEONTOLOGY, PETROLOGY, AND MINERALOGY, 1901. 25 
137 Chibas (Eduardo J.). Manganese mining in Cuba. 
Mines and Minerals, vol. 21, pp. 295 296, 1901. 
Abstract of report on the manganese mines near Santiago. 
133 Cilley (Frank H.). Some fundamental propositions in the theory 
of elasticity. A study of primary or self-balancing si cesses. 
Am. Jour.,Sci., 4th ser., vol. 11, pp. 269-290, 1901. 
Discusses briefly the application of the theory to the study of the inner 
condition of the earth. 
139 Clapp (Frederick Gr.). Geological history of the Charles River 
[Massach usetts] . 
Tech. Quart,, vol. 14, pp. 171-201, figs. 1-13, 255-269, figs. 14-17, 1901. 
Describes the various stages of the river's development and their 
causes, its relation to the geologic structure and the Tertiary and < rlacial 
history of the region. 
14:0 Clark (William Bullock) and Martin (George Curtis). The 
Eocene deposits of Maryland. 
Md. Geol. Surv., Eocene, pp. 21-92, pis. 1-14, 1901. 
Describes the general stratigraphic relations, distribution, characters, 
origin of the materials, and the stratigraphic and paleontologic charac- 
teristics of the Eocene strata. Discusses their correlation. 
141 Eocene Mollusca. 
Md. Geol. Surv., Eocene, pp. 122-203, pis. xvii-lvii, 1901. 
14:2 Eocene Molluscoidea (Brachiopoda). 
Md. Geol. Surv., Eocene, pp. 203-205, pi. 58, 1901. 
143 Eocene Echinerdomata. 
Md. Geol. Surv., Eocene, pp. 232-233, pi. 62, L901. 
144: Clarke (John M.). The Oriskany fauna of Becraft Mountain. 
Columbia County, N. Y. 
N. Y. State Mus., 53rd Ann. Kept., vol. 2, pp. 6-101, pis. L-9, and 
geologic map, 1901. 
SeeClarke(J. M.), No. 971. in U. S. Geological Survey Bulletin, V> 
188. 
14-5 Limestones of central and western New York interbedded 
with bituminous shales of the Marcellus stage, with notes 
on the nature and origin of their faunas. 
N. Y. State Mus., Bull. No. 49, pp. 115-138, pi. 8, figs. 1-2, 1901. 
140 Now Agelacrinites. 
N. Y. State Mus., Bull. No. 49, pp. L82-198, pi. 10, figs. 1 7. 1901. 
Reviews the literature regarding these forms and describes three new 
species. 
147 Value of Amnigenia as an indicator of fresh water deposits 
during- the Devonic of New York. Ireland and the Rhine- 
land. 
N. Y. State Mus.. Bull. N T o. 49, pp. 199 203, pi. II. 1901. 
