weeks] PALEONTOLOGY, PETROLOGY, AND MINERALOGY, 1894. 61 
321 Keith (Arthur). Harpers Ferry folio. Maryland, Virginia, and 
West Virginia. 
U. S. Geol. Surv., Geologic Atlas of the United States, folio 10. 
Describes the geography and drainage of the region, the occurrence 
of quartz-porphyry, andesite, Catoctin schist, and diabase, the occur- 
rence and distribution of the Cambrian, Juratrias, and Tertiary strata, 
the geologic structure and the deposits of iron, copper, and building 
stones. Includes topographic, colored areal geologic, economic geo- 
logic, and structure section maps. 
322 Geology of the Catoctin belt. 
TJ. S. Geol. Surv., 14th Ann. Rept., pt. 2, pp. 285-395, pis. xix-xxxix, 
' fig. 43. 
Describes the physical features and reviews the literature of this 
region — the eastern mountain belt of Maryland and Virginia. De- 
scribes the occurrence and composition of the granite, quartz- 
porphyry, andesite, and Catoctin schist, and discusses the relations 
of these igneous and volcanic rocks. Describes the occurrence and 
lithologic composition of the sedimentary beds of Cambrian, Silu- 
rian, and Juratrias age. Discusses the geologic structure and the 
geomorphology of the region. 
323 Kemp (James Fnrinan). Preliminary report on the geology of 
Essex County [N. Y.]. 
N. Y. State Mus., 47th Ann. Rept., pp. 627-666. 
Gives a list of 38 papers on the geology and mineralogy of the 
Adirondacks. Discusses the general geologic relations and reviews 
the schemes of classification of rocks of this region previously pub- 
lished. Describes the geology of the different townships of the county, 
illustrated by maps showing the distribution of the crystalline and 
sedimentary formations. 
324 [Relation of deformation to ore deposition.] 
Geol. Soc. Am., Bull., vol. v, p. 32 (£ p.). 
In discussion of paper by W. P. Blake on the " Wisconsin lead and 
zinc deposits." 
325 Gabbros on the western shore of Lake Champlain [N. Y.\. 
Geol. Soc. Am., Bull., vol. v, pp. 213-224. 
Abstracts: Am. Geol., vol. xiii, pp. 214-215 (4 p.); Am. Nat., vol. 
xxviii, pp. 947-948. 
Reviews the previous descriptions of the geology of the Adiron- 
dacks; describes the distribution of the gabbros, the composition of 
the anorthosytes, the occurrence and petrographic character of the 
basic gabbros, the titaniferous magnetite ore bodies and the contacts 
of gabbro and limestone. 
326 The ore deposits at Franklin Furnace and Ogdensbnrg, N. J. 
N. Y. Acad. Sci., Trans., vol. xiii, pp. 76-96. 
Abstract: Am. Geol., vol. xiv, p. 202 (£ p.). 
Describes the minerals and ore bodies of these localities; describes 
the general geologic relations, the character, and the structure of the 
ore bodies and discusses the origin of the ore. Gives a list of all minerals 
and a list of 32 papers on minerals and ores found at these localities. 
