85 
CG({ Tilton (J. L.). The area of slate near Nashua, N. H. 
Iowa Acad. Sci., Proc, vol. iii, pp. 66-71, pi. v, fig. 3, 1896. 
Describes the geologic features of the area and the gradations in the 
slate, schist, and gneiss. Accompanied by geologic map and cross sec- 
tion. 
GOT ]STotes on the geology of the Boston basin [Massachusetts]. 
Iowa Acad. Sci., Proc, vol. iii, pp. 72-74, 1896. 
Gives a brief statement regarding the geologic work done in this 
field and a map of the southwestern part of the Boston basin. 
668 Todd (James Edward). The moraines of the Missouri couteau 
and their attendant deposits. 
TJ. S. Geol. Surv., Bull. No. 144, 71 pp., 21 pis., 1896. 
Describes the moraines in North and South Dakota between the Mis- 
souri and James rivers and other glacial phenomena. Includes brief 
notes on the Fox Hills and Pierre formations of the region. 
669 Formation of the Quaternary deposits [Missouri]. 
Mo. Geol. Surv., vol. ix, pp. 114-217, pis. xii-xxii, figs. 20-24, 1896. 
Describes the drift loess and alluvial deposits and gives a summary of 
the Quaternary history of Missouri. 
G70 The Quaternary geology [Higginsville sheet, Missouri j. 
Mo. Geol. Surv., vol. ix, sheet rept., No. 1, pp. 54-59, 1896. 
Describes the character of the Pleistocene.deposits in the area of the 
Higginsville sheet, Missouri, accompanied by map showing their distri- 
bution. 
671 The Quaternary geology [Bevier sheet, Missouri]. 
Mo. Geol. Surv., vol. ix, sheet rept., No. 2, pp. 37-47, 1896. 
Describes the topography and the character and distribution of the 
Pleistocene deposits in the area of the Bevier sheet, Missouri. 
672 Log-like concretions and fossils shores. 
Am. Geol., vol. xvii, pp. 347-349, pi. xii, 1S96. 
Describes the occurrence of log-like concretions in the Laramie for- 
mation of South Dakota and discusses their origin. 
67.') [Review of a The formation of the Quaternary deposits of 
Missouri,' 1 by J. C. 0.] 
Jour, of Geol., vol. iv, p. 976 (f p.), 1896. 
674 Tower (G. W.). Naval erosion. 
Science, new ser., vol. iii, pp. 563-564 (-\ p.), 1896. 
Describes the erosion of stream banks produced by a steamer in the 
Kennebec River, Maine. 
675 Turner (H. W.). Further contributions to the geology of the 
Sierra Nevada. 
U. S. Geol. Surv., 17th Ann. Kept., Pt. 1, pp. 529-710, pis. xvii-xlvii, 
figs. 18-22, 1896. 
Describes the character and distribution of the igneous and metamor- 
phie rocks, the pre-Cretaceous sedimentaries, and the Gretaeeous, Ter- 
tiary, and Pleistocene beds in various parts of the Sierra Nevada region. 
Gives an account of the occurrence of gold and a description of the 
petrographic and chemical characters of a large number of rock 
varieties. Discusses the rock classification. 
