16 BIBLIOGRAPHY AND INDEX OF N. A. GEOLOGY, [bull. 162. 
9 Adams (George I.). Physiography of southeastern Kansas. 
Kan. Univ. Quart., vol. vii, pp. 87-102, 2 maps, 1898. 
Describes the general physiography of the Great Plains, the geologic 
structure of Kansas, and the physiographic features of the southeastern 
portion of the State. 
10 A geological reconnaissance in Grant, Garfield, and Woods 
counties, Oklahoma. 
Kan. Univ. Quart., vol. vii, pp. 121-124, pis. xi-xii, 1898. 
Describes the general geologic and geographic features of the region. 
11 Aguilar y Santillan (Rafael). Bibliografia geologica y minera de 
la Republica Mexicana. 
Inst. Geol. de Mexico, Bull. No. 10, 158 pp., 1898. 
11a Aguilera (Jose G.). Catalogo sistematico geografico de las espe- 
cies mineraiogicos de la Republica Mexicana. 
Inst. Geol. de Mexico, Bull. No. 11, 157 pp., 1898. 
12 Aldrich (T. H.). Some new Eocene fossils from Alabama. 
The Nautilus, vol. xi, pp. 97-98, 1898. 
13 Ami (Henry M.). Note on the physiography and geology of Kings 
County, Nova Scotia. 
Ottawa Nat., vol. xii, pp. 149-150, 1898. 
Gives brief notes on the geology of the county. 
14 The mastodon in western Ontario. 
Abstract, Science, new ser., vol. vii, p. 80 (i p.), 1898. 
15 Andrews (C. I.). The volcanic rock of Alum Hill, Boulder County 
[Colorado]. 
Colo. Sci. Soc, Proc, vol. v, pp. 148-155, 1898. 
Describes the megascopic, microscopic, and chemical characters of 
two varieties of eruptive rock. 
16 Ashley (George H.). Note on an area of compressed structure in 
western Indiana. 
Geol. Soc. Am., Bull., vol. ix, pp. 429-430, 4 figs., 1898; Abstracts, Jour, 
of Geol., vol. vi, pp. 118-119; Science, new ser., vol. vii, p. 84 (9 1.), 1898. 
Describes occurrence in the Indiana coal field. 
17 Note on fault structure in Indiana. 
Ind. Acad. Sci., Proc. 1897, pp. 244-250, pis. i-ii, 1898. 
Describes faults in the Coal Measures of Indiana. 
18 Blatchley (W. S.) and. Geological scale of Indiana. 
See Blatchley (W. S.) and Ashley (G. H.), No. 92. 
19 Austin (W. L.). Copper deposits of Mora County , New Mexico. 
Abstract, Eng. and Mg. Jour., vol. lxv, p. 370 (£ p.), 1898. 
Describes the occurrence and origin of the deposits. 
