30 se G. W. Hawes—Albany Granite, 
a foreign variety of quartz porphyry, and all are cemented 
together with the granitic material. The feldspar crystals in 
this granite are all broken to fragments,* and the whole mass 
is impregnated with tourmaline, but the constituent minerals 
iy), 
Te 
Wy 
yy, 
Yi 
Y 
y 
pausaeres, Y° _ aoe cpeares, 
Junction of Argillitic mica schist and Albany Granite. 
are all easily recognized. Fig. 3 — the appearance of 
the contact, as seen upon the ‘cliff at n easily accessible point, 
about 150 feet below the summit. The different zones that I 
have described are here all sharply defined. To recapitulate, 
here zones are as follows: 
4 
a of the argillitic nin ah nee (chloritic). 
. Zone of the mica a schist itic). 
TD OV & bo 
NW 
° 
=] 
@ 
2 = 
tt 
5 
28 
ia 
Q 
aS 
3 
Qa 
ag 
3 
= 
= 
It will thus be seen that the succession of zones is different 
from those that have been described about other granitic 
masses, but ek the effects hla aa are of the same nature 
and referable to the same ca 
Following the line of last (down the cliff, the phenomena 
of the contact ever become more extensive and remarkable. 
At a point just above the spot figured, a long arm of the 
porphyritic granite, from two to three feet wide and eighty 
feet long, extends into the schist at nearly a right angle to its 
* The crystals of orthoclase found in the small branches of granitic masses 
where they woul be subjected to friction have been often found broken. In the 
eo pire: d Elba for example. Credner Geologie, p. 285. 
+ The zones in the Jee as described by Rosenbusch are 
Clay s 
2 Knotty clay slate. 
3. saa Bee 
schist, 
rnstone e,usually rai ie hornstone. 
The knotty character i is have entirely abse 
: 
