240 Screntific Intelligence. 
likely to abound near the top as at the bottom. The material 
overlies the “bowlder clay” or “till” of the region. These 
pham in a paper pone on page 156 of this volume. The ey a 
during its diaolnaion) modified afterward by the water Shin 
ees in the summer months, wee have flowed freely, over, 
neath and from the foot of the 
the supposed — denies: ‘called Protichnites and 
Climatictites by Professor E. J. Cuapman.—The Potsdam 
sandst of Beuharnois ue Vaudreuil, Canada, near the junc- 
tion of the St. Lawrence ttawa rivers, an the same forma- 
tion in the vicinity of Perth, Canada, afforded the Protichnites, 
four species of which were made out by Professor Owen. fes 
sor Chapman, | of Toronto, concludes, from his examination of shibie 
that they are impressions of large fucoids. This view he regards 
as strengthened by the occurrence of the Protichnites at Perth 
along with the i impressions known as Climatichnites. The latter 
have the form of a band five to six inches wide and several feet 
in length, with transverse series of narrow Geascatin ridges, an 
ex- 
sabe the upper limit was from 1 200 to “1,600 meters. From 
the distribution of bowlders, ~ _ of the upper surface of the 
ancient glaciers has been ascertained to be about thirty feet in 
1,000, in the narrow valleys, vile whore it was more pone 
and in some places the surface was, for 50 kilometers in lengt 
horizontal or nearly so. This state of things gives to the ancient 
Swiss glares, & as Loe remarks, a close resemblance to those which 
now cover Greenland and Giiabergen,-- Verhandl. Nat. Ges. 
Basel, 1875-76, ia 136. 
5. The Geology of New iit ge C. H. Hrrencocg, State 
Geologist, J. H. Huntrneron, Warren Upnam, and G. Ww. 
AWES, Assistants. Part II, Eeratigraphien! Geology. 684 
described, in the American Chemist for March, rocks from the 
Adirondacks Bec ieee by him in Essex County and mostly in the 
