THE ADIRONDACK MOUNTAINS 1 5 



represented by an inch on the map. The most vakiable feature of 

 these maps is the fact that the rehef (topography) of the country 

 is so accurately represented, this feature being explained by the 

 accompanying figure and the description generally printed on the 

 back of each map. The relief is shown by contour lines in brown, 

 every point on a given contour being at the same altitude above 

 sea level. On the Adirondack maps the contour interval, that is, 

 vertical distance represented between any two contour lines, is 20 

 feet. Water features are shown in blue. Artificial features, such as 

 roads, trails, railroads, boundary lines, houses, villages etc., are 

 shown in black. Each quadrangle map is designated by the name 

 of some geographic feature. The maps are published by the United 

 States Geological Survey, and orders for them should be sent to 

 the director of that bureau at Washington, D. C. They are sold at 

 ten cents each when fewer than fifty are purchased, but in lots of 

 fifty or more of the same or dififerent maps, the price is six cents 

 each. Orders should be accompanied by cash or a post office money 

 order. All except the northwestern border of the Adirondack 

 region has been covered by these topographic maps. Figure 2 is an 

 index to both the topographic and geologic maps thus far published. 

 Any person interested in the geographic setting of any portion of 

 the Adirondacks should procure the proper topographic sheets of 

 that region and thus be provided with the best map of the sort in 

 existence. It would be difficult to overestimate the value of these 

 maps to teachers and pupils of geography, and every school should 

 be provided with a supply of them. 



