DEPARTMENT OF GEOLOGY 
41 
Relief map of Yellowstone National Park, showing canyons 
of the Yellowstone and Madison rivers, etc. Horizontal and 
vertical scale, i inch equals i mile, or i :63,36o. 
Relief map of the Yosemite Valley from surveys made by 
Captain of Engineers, George M. Wheeler, U. S. A., scale, i inch 
equals 1000 feet. 
Relief map of Eureka District, Nevada, colored to show 
geological formations, scale, i in. equals 16,000 feet. 
Relief map of the island of Porto Rico. Horizontal scale, 
I inch equals 4 miles. Vertical scale, i inch equals 2 miles. 
Relief map of the Hawaiian Islands. Horizontal scale, i 
inch equals 4 miles. Vertical scale, i inch equals 2 miles. 
Relief map of the Niagara river. Horizontal scale, i inch 
equals i mile. Vertical scale 4:1- The entire course of the 
Niagara river is shown. 
Relief map of Niagara Falls and vicinity on a larger scale 
than the preceding. Horizontal and vertical scale the same, 
I inch equals 500 feet. This map, besides exhibiting the famil- 
iar features of the Falls and Gorge, also makes plain the ancient 
shore of Lake Erie and the old channel leading from the Whirl- 
pool. 
Relief map of the United States and the Gulf of Mexico, 
modeled on a section of globe 16 K feet in diameter. Horizontal 
scale, I inch equals 40 miles. Vertical scale, i inch equals 8 
miles. This map is colored to show average annual rainfall and 
lines of equal temperature. 
Relief map of the Grand Canyon of the Colorado and the 
cliffs of southern Utah, colored to show geological formations. 
Horizontal scale, i inch equals 2 miles. Vertical scale, i inch 
equals 5000 feet. 
Relief map of Palestine. Horizontal scale, H of an inch 
equals i mile. Vertical scale, 3>^ times the horizontal. 
Mounted on easels and occupying the floor of the hall will 
be found the following : 
Contour map, in relief, of the Washoe, Nevada, mining region, 
50 foot contours. Scale, i : 20,000. 
This form of map illustrates how a relief map is constructed 
from a printed contour map. By filling the contours here shown 
the ordinary relief map is obtained. 
Relief model of Leadville and vicinity, showing geological 
structure. Scale, i inch equals 800 feet, or i : 9,600. 
