Authors' Catalogue. 125 
Ashley, G. H. (Blatchley, W. S. and) 
Geological scale of Indiana. (22iKi Ann. Rept. Dept. Geol. and Nat. 
Resources of Indiana, pp. 17-23, pl- 2, 1898.) 
Bagg, R. M. 
Report upon the foraminiferal deposits near Bujio, and of the 
Empire limestone. [In R. T. Hill's paper on the isthmus of Panama.] 
(Bull. Mus. Comp. Zool., vol. 28, Geol. ser. vol. 3, no. 5, p. 275, Jung- 
1898.) 
Bell, Robert. 
On the occurrence of mammoth and mastodon remains around 
Hudson bay. (Geol. Soc. Amer.. Bull., vol. 9, pp. 369-390, June 22, 
1898.) 
Blatchley, W. S., andAshley, G. H. 
Geological scale of Indiana. (22nd Ann. Rept. Dept. Geol. and 
Nat. Resources of Indiana, pp. 17-23, pl. 2, 1898.) 
Blatchley, W. S. 
The geology of Lake and Porter counties, Indiana. (22nd Ann. 
Rept. Dept. Geol. and Nat. Resources of Indiana, pp. 25-104, pis. 3-8, 
I map, 1898.) 
Blatchley, W. S. 
The clays and clay industries of northwestern Indiana. (22nd Ann. 
Rept. Dept. Geol. and Nat. Resources of Indiana, pp. 105-153, pis. 9-11, 
1898.) 
Blatchley, W. S. 
The petroleum industry in Indiana in 1897. (22nd Ann. Rept. Dept. 
Geol, and Nat. Resources of Indiana, pp. 155-184, pis. 12-14, 1898.) 
Coleman, A. P. 
Fourth report on the West Ontario gold region. (Rept. Bureau 
of Mines of Ontario, vol. 7, pt. 2, pp. 109-145, 1898.) 
Coleman, A. P. 
Notes on the petrology of Ontario. (Rept. Bureau of Mines of 
Ontario, vol. 7, pt. 2, pp. 145-150, 1898.) 
Coleman, A. P. 
Clastic Huronian rocks of western Ontario. (Rept. Bureau of 
Mines of Ontario, vol. 7, pt. 2, pp. 151-160, 1898.) 
Crawford, J. 
Recent severe seismic disturbances in Nicaragua. (Am. Geol., vol. 
22, pp. 56-58, July 1898.) 
Cummings, E. R. (Prosser, C S. and) 
Sections and thickness of Lower Silurian formations on West Can- 
ada creek and in the Mohawk valley. (15th Ann. Rept. State Geolo- 
gist of New York, pp. 615-659, pis, 1-12.) 
Dall, W. H. 
Report upon the paleontology of the collections. [In R. T. Hill's 
paper on the isthmus of Panama.] (Bull. Mus. Comp. Zool., vol. 28, 
Geol. ser. vol. 3, no. 5, pp. 271-275, June 1898.) 
