( 544 - ) 
Number of 
the Strata. 
Thickneh of j 
Stratum. 
Feet. Inches. 
Proportion to 
Water, 
XVIII. 
2 
0 
as 305 to 129 
XIX. 
O 
9 
920 
266 
XX: 
I 
6 
192 
76 
XXI. 
O 
6 
675 
2l6f 
XXII. 
I 
? 
428 
^5 
XXIII. 
O 
6 
828 
231 
XXIV. 
2 
0 
333 
MI 
XXV. 
I 
0 
198 
154 
XXVI. 
6 
0 
238 
141 
XXVII. 
6 
0 
298 
236! 
XXVIII. 
0 
1 
267 
1 86 
XXIX. 
2 
0 
3 H 
240 
XXX. i 
0 
6 ( 
• j *44 
M 3 1 
Or Specific^ 
Gravity. 
as 336 to loo 
346 
M? 
3 M 
290 
358 
218 
i. 
1 69 
12^ 
144 
Mi 
18} 
By which it is evident, that the Gravities of the fe- 
veral Sfrate are in no manner of Order 5 but purely 
cafual, as if mixt by chance* 
T - 
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