1887. ] 
NEW YORK ACADEMY OF SCIENCES. 
33 
The quarrymen of the compact crystalline rocks of Maine 
have long been accustomed to make distinctions of the same 
general purpose, the splitting directions of the same stone dif- 
Locality. 
H. Blue Hill, 
Deer Island. 
Mt. Waldo. 
Swanville, 
Waldo Co. 
Lincolnville, 
Har bor Qy., 
Vinal Ha- 
ven. 
Sands Qy., Vi- 
nal Haven. 
Duschane. 
Hurricane I. 
Dix Island. 
Spruce Head. 
Round Pond. 
Hallowell. 
Biddeford. 
fering widely in even neighboring quarries. 
Remarks. 
Regular sheets 
1 to 4 feet 
thick. 
feet thick, 
feet thick. 
lar. 
Indistinctly 
laminated. 
Thick sheets. 
Sheets, 1 to 10) 
feet thick. 
Sheets irregu- 
Rift. Grain. 
\Vert.,E. & W. 
'Vert., FN & 8. ‘ 
_ paral lel t coy 
| joints. 
On lift, par. to 
‘Sheets, 3 to 8Very good, 
jts. 
Sheets, 4 to 8/Vert., N.W. & 
S. 75 E., par. to 
| sheets, dip-| head joints. 
ping off 
from Mt. 
Vert., N. & S. |Vert.,E. & W., 
par. to head 
| joints. 
|Vert., par. to 
vert, joints. 
vert., E. & 
| W. par. to 
| S.E., par. to 
joints. 
‘Vert., par. to|/Vert., N. & S. 
| E. & W. ii 
E. ee W., par. Horizontal. 
to main jts. | 
On the lift. 
Vert., E. & W., 
to head jts. 
‘On the lift, or 
| hor. 
zontal, dip-| 
ping to Was) 
north. 
‘Oblique to the’ 
2 sets of vert. 
joints. 
quarry on Pleasant River, Maine: 
nearly par.) 
Nearly hori- 
| 
|Vert., par. to 
| the joints. 
E.& W., par.to 
main seams. 
iMorizontale 
| Hardest split- 
iting direction, 
In the lift. 
Parallel to 
main N.E. 
SES EWE 
joints. 
Thus, in a trap 
