Reviezv of Recent Geological Literature. 3,2^ 
488 pages, with 57 plates and 271 figures. It discusses the measurements 
of the flow of many streams throughout the United States, partly 
obtained from the engineer officers of the Army, and from individuals 
and corporations, but mostly from the field work of the hydrographers 
of the Geological Survey. The data are presented in diagrammatic 
form, as well as by statistical tables. Surveys of reservoir sites have 
been continued, and also various investigations relating to the utiliza- 
tion of water for irrigation, power, and other industrial purposes. 
The largest consideration is directed toward the reclamation of the 
arid lands in the western half of the United States, of which the 
greater part, about 56 per cent, remains vacant. It is estimated that 
78,000,000 acres, comprising a seventh part of the vacant lands, are 
capable of irrigation sufficient for agriculture- 
Mr. N, H. Darton, in the second paper, gives a "Preliminary De- 
scription of the Geology and Water Resources of the Southern Half 
of the Black Hills and Adjoining Regions in South Dakota and Wy- 
oming," pages 489-599, with plates 58-112, and figures 272-299. This 
report describes an area of about 5,500 square miles, in respect to its 
structural and economic geology, water supply for irrigation and 
stock-raising, timber, climate, and the history of its topographic devel- 
opment. 
The entire Cretaceous period is found to be represented in this 
district, with an aggreate thickness of at least 5,000 feet of sediments. 
The sandstone series forming the lower part, until recently regarded 
as a single formation, named the Dakota sandstone, is found, within 
the last few years, to comprise not only a formation carrying an Upper 
Cretaceous flora, to which the term Dakota is now restricted, but also 
extensive Lower Cretaceous deposits. In their descending order, these 
are named the Fuson formation, of sandstone, shale, and mudstone; 
the Minnewaste limestone ; and the Dakota formation, mainly sandstone. 
All the Cretaceous formations are uplifted by the Black Hills dome, 
often to steep angles- The principal epoch of the uplift was probably 
Early Eocene ; and the larger topographical outlines, as truncation of 
the dome and valley erosion, were far developed before the White 
River epoch of the Oligocene period. 
In the third and last paper of the volume, Mr. Willard D. Johnson 
treats of "The High Plains and their Utilization," pages 601-741, with 
plates 1 13-156, and figures 300-329. A lengthy review of an advance 
copy of this paper was published in the American Geologist for last 
January. w. u. 
Glacial Formations and Drainage Features of the Erie and Ohio Ba- 
sins. By Fr.\nk Leverett. (U. S. Geological Survey Monographs, 
Vol. XLL, Washington, 1902, 802pp., 20 pi., 8 fig. Price $i-75.> 
This great volume is a worthy successor to the same author's Mon- 
ograph XXXVIII, "The Illinois Glacial Lobe," published in 1899. 
Alone it would establish the reputation of any geologist. And it dis- 
plays not only the author's ability and superior skill in the diagnosis 
