« iTurarre 
'•t*- rgi t? f i'c^ w 4 *H 
or prominent natural feature within it, and on the marg 
the map are printed the names of adjoining quad ran. 
lieh it 
the United States have been surveyed, and maps of 
similar to tliej one on the other side of this sheet have 
• % 
The -topographic map js the base on which the geolog 
mineral resources of a quadrangle are represented, am 
maps showing these features are bound together with a dej 
tive text to form a folio or tire ifeologic A tlas of the U 
% 
States. More than 200 folios ha ve been published. 
Index maps of each State and ol-Alaska and Hawaii sh 
the areas covered toy topographic maps and geologic folio? 
lished by the United States Geological Survey mav he obtj 
free. Copies of the standard topographic maps may 
for 10 cents each; some special maps are sold at different jj 
A discount of 40 per cent is allowed on an order for 
amounting to $5 or more at the rctai 1 price. The ge 
folios are sold for ‘Jo cents or more each, the price depe 
on the size of the folio. A circular describing the folio. 5 
be sent on request 
Applications for maps or folios should be accompatvi 
cash, draft, or money order (not postage stamps) and shoe 
addressed to 
THE DIRECTOR 
J 
logical Survey 
Washington, J 
January. 1924. 
j > 3 
