Geology and Natural History. 293 
quarry. The author mentions a spontaneous fracture in a bed of 
gneiss three feet and nine inches thick, which was sixty-one feet 
ng, and mainly in the direction of the strike, but in the south- 
ern half with some abrupt transverse (to the east) turns. The 
transverse fractures were opened wider than the north and south, 
—in two and a half months, the former five-eighths of an inch, the 
latter nowhere over one-fourth—-showing that there was less resist- 
ance to motion in the direction of the strike. He mentions cases 
of anticlinals formed by movements in beds. In one instance a 
ha i 
? 
crack three-sixteenths of an inch wide. In another instance in a 
bed three inches thick, the amount of elevation at the center was 
one inch, and there was a fracture along the whole length of the 
crest, trending east and west. Prof. Niles observed a bend form 
ina bed and three-quarter inches thick; in a few hours 
the portion of the bed forming the crest was elevated three ee 
ad a 
Ity. ree other instances are mentioned of similar effects, on a 
smaller seale, 
6. Fossils from the so-called Huronian of Newfoundland.— 
r. E. Brutinas read a paper on this subject before the Natural 
ossils. Th 
-s ne is broad ovate (6 lines 
long by 5 broad), with a ring-like border, inside of this a groove, 
with an angular ridge or crest 
along the middle. In allusion to the shield-like form, a little like 
