716 REGINALD ALDWORTH DALY 
foliated, fine-grained, muscovite-biotite-schist with abundant 
mica. The molar contact is found on the eastern end of the 
hill. It strikes N. 25° W., and is parallel to the schistosity of 
the mica-schist and to the pronounced foliation of the por- 
phyritic granite. All the structure planes dip westward at a 
high angle. Going across the strike from the contact toward 
the porphyritic granite a remarkable series of elongated 
horses of the schist interrupt the continuity of the granite. 
They are usually much longer than their width, as, for example, 
a large one 150 feet long by 35 feet wide, which appears on the 
west side of the saddle. In most cases there is a definite ori- 
entation of the horses parallel to the contact line, while the 
foliation of the porphyritic granite wraps around the inclusion 
in a significant way. They are uniformly schistose with that 
structure as well developed as in the main body. Crumpling of 
the horses is also characteristic. For about two hundred yards 
east of the contact, the schist is cut by several intercalated 
sheets of porphyritic granite, varying from five to ten yards in 
thickness. Their phenocrystic feldspars lie parallel to the walls 
between which the sills were intruded. Similar sheets can be 
found in the pasture on the southern flank of the hill and west 
of Randlett Pond. 
Relation of the porphyritic granite to the Waterville eruptives.— 
It is probable that the porphyritic granite is older than all of the 
intrusive rocks of the Waterville Mountains. The contacts were 
discovered in only one place, namely, on the southern slope of 
Mount Whiteface; there the hornblende-granite composing the 
mountain distinctly cuts the porphyritic granite. In the path 
from the Elliott House, at Waterville, to the top of the Sand- 
wich Dome, many outcrops of several types of granitic rocks 
present a problem of correlation which the writer has had no 
opportunity to solve. It is possible that these rocks are chilled 
phases of the Conway granite; for there is, in the main, a ten- 
dency towards a porphyritic structure throughout, which on “the 
one hand becomes more pronounced as one approaches the por- 
phyritic granite, and is entirely lost in the very coarse Conway 
