Table of the Density and Porosity of Kocks. 
Gallons of 
water absorbed 
per square mile 
of rock 3 feet 
thick. 
53.754.000 
52.000. 000 
60.538.000 
70.610.000 
7.254.000 
98.000. 000 
60.536.000 
70.610.000 
53.701.000 
59.651.000 
61.791.000 
8,66^000 
6.993.000 
4.853.000 
28.747.000 
18.892.000 
39.350.000 
45.142.000 
49.265.000 
93.625.000 
Gallons of 
water 
absorbed 
per cubic 
foot of rock. 
CM CMCOTt)COCMCO'^(MCOQOCOCOOO‘0 100030503 
Tfi tM(MT3300t>(M'^^rHCOOOOiOO CMt-COOOrH 
«0 O t- GO O tH t> 00 CO t' rH O O CO CM ^ O lO t-H 
rH r-4 
Volume of 
water 
absorbed by 
100 volumes 
of rock. 
O t> O CO 03 03 o CO O CO CO ^ CO O lO TiH 
sp cpC0»0Mt>C0O(M-^<X)CpC003l>’ coocp^i^ 
O OStHCOtHOOtHCOOtHtHiHth’ lb COt-ODOSt^ 
T— 1 1 — It— ( 1 — It— It— ItHi— It— < t— 1 
Specific 
gravity of 
the particles, 
water =1. 
03 CO CO O (M CO 'cH CO t> tH T-l tH Ttl o 03 tH O 03 
CO C»<:pOI^(M03O<pcp00Ocpcpl^ zo CO CO Ci rH 
<M (fqoqcbcMWcMcbdqoioqcbcMiMcfi (McicMCMcb 
Specific 
gravity of 
the mass, 
water =1. 
03 t>OCOCO(MOC001CO<MCOt>CSJ!0 000310C<I 
OCDCOCOCOCOCOCOCOTtlCO»OCOUO cocoococo 
CM CMCM(M(MCM(MCM(MCMCMCM(M(MCM (M(MCM(M<jq 
Size of grains in 
decimals of an 
inch. 
Irregular 
•009 to *004 
•007 
•008 
•003 
•003 
•006 
Very coarse 
and irregular 
in size 
•010 
•009 
•014 
•009 
•oil 
Locality. 
Bristol . . . 
5? . • . 
Gloucestershire 
” 
Caithness . . 
Gloucestershire 
)) 
?> ® 
5? • 
?5 • 
Bristol . . . 
;; ; ; ; 
S. Wales . . . 
Sheffield’ 
Forest of Dean . 
<3 
> 
Q 
! 
0 
e 
c 
1 
c 
c 
d 
i 
) 
i 
i 
3 
3 
3 
5 
3 
3 
f 
t 
3 
. .... <33 .... ... 
. . ^ .... ...... 
1 * 1 
1 ' = ll " “ ^ "1 , , , . . = . . 
ea pH O 
m Ph Q ^ 
® ® 03 o 
^ V. - ^ ^ ^ ^ 7. - 7 7-7- 
o oo g 
