Authors' Catalogue. 65 
Mathews, E. B. 
The first geological excursion along the Chesapeake in 1608. 
(Johns Hopkins Univ. Circulars, vol. 18, pp. 14-IS, Nov. 1898.) 
Mathews, E. B., (Gannett, Henry, and) 
Report on the cartography of Maryland. (Maryland Geol. Sur- 
vey, vol. 2, pp. 243-488, pis. 33-48, 1898.) 
Merrill, G. P., and Mathews, E. B. 
The building and decorative stones of Alaryland. (Maryland Geol. 
Survey, vol. 2,^ pp. 45-241, pls. 4-32, i8g8.) 
Ortmann, A. E. 
Preliminary report on some new marine Tertiary horizons discov- 
ered by Mr. J. B. Hatcher near Punta Arenas, Magellanes, Chile. 
(Am. Jour. Sci., ser 4, vol. 6, pp. 478-482, Dec. 1898.) 
Perkins, G. H. 
Report on the marble, slate and granite industries of Vermont. 
(68 pp.; The Tuttle Co., Rutland, 1898. [Biennial report of the state 
geologist.]) 
Perrine, CD- 
Earthquakes in California in 1896 and 1897. (U. S. Geol. Survey, 
Bull. 155, 47 pp., 1898.) 
Pratt, J. H. 
The occurrence, origin and chemical composition of chromite. [Ab- 
stract.] (Engineering and Mining Jour., vol. 66, p. 696, Dec. 10, 1898.) 
Pratt, J. H., (Hidden, W. E., and) 
On the associated minerals of rhodolite. (Am. Jour. Sci., ser. 4, 
vol. 6, pp. 463-468, Dec. 1898.) 
Ries, Heinrich. 
The kaolins and fire clays of Europe and the clay-working industry 
of the United States in 1897. (U. S. Geol. Survey, 19th Ann. Rept., 
pt. 6, pp. 1-114, 1898.) 
Russell, I. G. 
The great terrace of the Columbia and other topographic features 
in the neighborhood of lake Chelan, Washington. (Am. Geol., vol. 
22, pp. 362-369, Dec. 1898.) 
Russell, I. C, 
Rivers of North America. A reading lesson for students of geo- 
graphy and geology, (xix and 327 pp., 17 pis.; The Science Series, G. 
P. Putnam's Sons, New York, 1898.) 
Sardeson, F. W. 
The so-called Cretaceous deposits of southeastern Minnesota. 
(Jour. Geol., vol. 6, pp. 679-691, Oct.-Nov. 1898.) 
Scott, W. B. 
Memoir of Edward D. Cope. (Bull. Geol. Soc. Am., vol. 9, pp. 
401-408, Dec. I, 1898.) 
Shattuck, G. B. 
Two excursions with geological students into the Coastal plain of 
Maryland. (Johns Hopkins Univ. Circulars, vol. 18, pp. is-16, Nov 
1898.) 
