650 EDITORIAL 
5. Atlantic Estuarine Tides. By M.S. W. JEFFERSON. 
6. The Forestry Conditions of Washington State. By HENRY GANNETT, 
Washington, D. C. 
7. The Five Civilized Tribes and the Topographic Survey of Indian Ter- 
ritory. By CHARLES H. FitcH, Washington, D. C. 
8. Bitter Root Forest Reserve. By RICHARD U. GOODE, Washington, 
Da (Cy 
The foregoing has been kindly furnished by Mr. Warren 
Upham, secretary of Section E, A. A. A. S: 
eons 
GEOLOGISTS visiting the exposition at Omaha, and teachers 
everywhere, will find particularly valuable the topographic map 
of Omaha and vicinity, published by the United States Geologi- 
cal Survey and gratuitously distributed in the Mines and Mining 
building. The map bears the date of June 1898, and is an 
example of the excellence of the maps now being made. The 
main features are the Missouri River bottom land and valley, 
and the loess topography. The former is a most characteristic 
bit of river work. The cut-off lakes, the great bends of the 
river, the sharp bluffs where the stream impinges against the 
bank, and other features are shown so clearly as to make the 
map especially valuable in the class,room. The apparent simi- 
larity in width of the Platte and the Missouri rivers and the 
dissimilarity in their valleys, will likewise call forth questions. 
It is, however, the loess topography which is most interesting, 
since within the limits of the quadrangle there is an excellent 
example of the contrast between the wind-shaped loess near, and 
the water deposited away from, the vicinity of the stream. On 
the west side of the river, in Omaha and near it, the map shows 
open contour, gentle slopes, and obvious erosion topography and a 
rectangular system of roads. The hills rise easily to 1200 or 1250 
feet A. T. Immediately across the river the contours are close, 
the slopes sharp, the roads follow streamsand ridges and disregard 
land lines, and the hills rise abruptly to 1300 or 1350 feet, A. T. 
A very characteristic feature, well shown on the map, is the large 
number of small detached peaks. Another is the interference 
