732 REVIEWS 
Maryland Geological Survey, Vol. V, 1905. By Witt1am BULLOCH 
CLARK, State Geologist. Baltimore, 1905. 
Contains reports on magnetic observations, county boundaries, high- 
ways, coals, coal formations and their correlation, coal mines, and on the 
chemical and heat-producing properties of Maryland coals. 
The Configuration oj the Rock Floor of Greater New York. By Wi1- 
LIAM HERBERT Hosss. (Bulletin No. 270, U. S. Geological 
Survey. Pp. 96, 5 plates. Washington, D. C., 1905.) 
This paper is a record of existing data on the form of the rock surface 
of New York. The waterways about Manhattan Island are described as 
steep rock canyons 200 to 300 feet deep, partially filled with drift. The 
main lineament of the rock topography is assigned to faulting. 
C. W. W. 
Tertiary and Quarternary Pectens of California. By RaLtpH ARNOLD. 
(U. S. Geological Survey, Professional Paper No. 47. Pp. 264, 
53 plates. Washington, D. C., 1906.) 
This paper is a monograph of the California fossil Pectens, and con- 
tains also descriptions of Pectens from other localities on the Pacific Coast, 
with a summary of California Marine Tertiary paleontology. 
C. W. W. 
Cretaceous Section in the Moose Mountains District, Southern Alberta. 
By D. B. Dowttnc. (Bulletin of the Geological Society of 
America, Vol. XVII, pp. 295-302. 1906.) 
The formations described are: the Kootanie, Dakota, Colorado, Eagle, 
Claggett, Judith River (Belly River), Bearpaw (Pierre), and Edmonton 
(Saint Mary River). A fuller report will be made by Mr. D. D. Cairnes. 
C. W. W. 
Status of the Mesozoic Floras oj.the United States. By LESTER F. 
Ward, with the collaboration of W1LL1AM M. FoNTAINE, ARTHUR 
Bipsins, and G. R. WIELAND. Second Paper. (U.S. Geologi- 
cal Survey, Monographs, Vol. XLVIII. Part 1, text, 616 pp.; 
Part II, 119 plates. Washington, D. C., 1905.) 
This report contains descriptions of the Triassic flora of Arizona; the 
Jurassic floras of Oregon, Alaska, California, Montana and Wyoming; 
