AM. JOUR. SCI. Vol, XXIX, 1885. 
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205° 103° 
Plate 1. 
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= | ay ® grea a oy mop f 4 A A a ; Spee A * BATION lL oe a sy 
A a A\ \ 7 Gite ae tal Se eens ica 4a 4 : 
Ss Fs : @ Re 7 4 & = fal J Red. 
: § by A oN se AA . 
Si a= U.S.GEOLOGICAL SURVEY *¥ , 
f 
a 
PA 
NORTH TRANSCONTINTS SUR | 
| HAYDENS SURVEY 
LER'S SURVEY x | o Wy Be 
KING'S. SURVEY . : 
NS 
IN STATE SUR. 
eH 
— ON A SCALE SUITABLE FOR THE USE 
ULATED AREAS. 
OF THE WW — 2 Mi = 
Wid U.S.GEOLOGICAL SURVEY Vj Es 
sf HH} 1884 
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wr as az" 
