Geology and Natural History. 219 
. 
marked from the Richmond valley, over the hill, across the Canaan 
crosses the crest of the Richmond hill nearly west of the Rich- 
’ mond railroad station. The compass course is 8. 35°-4 
of even twenty rods, on t 
the Canaan hill, will give larger blocks and more in number than 
a mile of the western slope of Richmond hill. : 
This fact has a direct bearing on the mode of transportation, 
and, like another well known, viz: that the grinding and rooving 
were chiefly on the north and west sides, it points to glaciers as 
the agent. 
Kiln was built e se boulders of Canaan rock, and 
om it the inhabitants supplied themselves with lime for several 
ears, leaving a e rock which s. Now these blocks 
Tegions of drift action. Water, unconfined _ de 
its burden much above its own level, while glacier ice does. 
Pittsfield, Jan., 1873. 
These very important facts respecting the ascent of boulders 
up high hills b the help of the glacier are of the same kind with 
others on Mt. Katahdin in Maine, where, according to different ob- 
Servers, boulders of fossiliferous Devonian rocks occur over the 
upper slopes. Mr. J. DeLaski states (this Journ., III, iii, 27) that 
these fossils occur at a height of 4385 feet above the sea (which is 
Within a thousand feet of the summit) on the south side of this 
‘solated mountain, and 3,000 feet above the low region—fifteen to 
Say fre miles distant to the north—from which the pee os 
* Gerive . D. D. 
3. Results of the Earth’s Contraction; by R. Matter, ee 
[The following is an extract from the introductory chapter of the 
he 
e that we have thus supposed cut out of t 
earth’s crust at the surface were of the hardest known granite = 
porphyry, it would be exposed to a crushing tangential press 
