PL IIL 
- 
- chalk area 
eel 
m 1 mi 
mcture of 1 . 
'J. the sooth « 
" f 
I*he thieknes- of the chalk in : . 
t kno 
__ I I 
_ : ■ i 
|e east s 3 . ~ - 
tween the sources of ] 3 - - 
t. and 
le * indicated by the ; t the rocks 
>ul northeast throng ■ ■ " 
lion of this 
d in PL III. 
halk bluff at Saline Lan ling is 20 _ 
iid abot;~ feet long. W 
xL so that less 
porti f th Ik as 
-' " . - I feet being 
earth. Specinu 
hich woi at the us 
sis 10 (p. Ill) of this 
£ the lower g 
anon suggests! 
- 
.■halk has been quarried 
e formation in the northw --• - 
11 S 
iari shows it 1 s 
1 
- top of 1 in this • 
i. then through nearly 
