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®%|l|ed by figures showing altitude, 
fsuch as road corners, summits, 
larks—are also given on the map 
i to the nearest foot only. More 
marks—as well as the geodetic 
itions, are published in bulletins 
' JL - X 
y. 
ian are shown in black. Bound- 
I, county, city, land grant, town- 
li by continuous or broken lines 
s. Good motor or public roads 
J, poor motor or private roads by 
shed single lines. 
gibed by the name of a city, town, 
r within it, and on the margins of 
jnes of adjoining quadrangles of 
lied. Over 3,300 quadrangles in 
h surveyed, and maps of them 
her side of this sheet have been 
n i 
L CVJ 1 
thrown from the northwest 
purpose of giving the appeal 
he interpretation of the contoi 
sents an imaginary line on the 
>f which is at the same altitud 
30uld be drawn at any altitude] 
;0l| rs at certain regular interv 
-i ■ th e seacoast itsen is a coi 
sude being mean sea level. Th 
shore line if the sea should ris 
he shape of the hills, mountai 
iltitude. Successive contour 
jnap indicate a gentle slope; h 
;ate a steep slope; and lines th 
- ----m 
manner m w 
con tot 
md grade is shown in the figijil 
base on which the geologry and 
O o«/ 
tangle are represented, and the 
1® bound together with a descrip- 
he Geologic Atlas of the United 
lhave been published, 
fid of Alaska and Hawaii showing; 
CD 
jhic maps and geologic folios pub- 
jeological Survey may be obtained 
jopographic maps may be obtained 
11 maps are sold at different prices. 
ilimw 
"• ■ A- S ! I i. I 'VI MSv , -- 
