Geology. 281 
1. Mr. Marcou on the Taconic and Lower Silurian Rocks of Vermont 
and Canada.—We have received a paper on this subject, read before the 
r. Marcou discusses the vexed ques- 
: . iia: 
ne which has lately been so often before our readers, who are well aware 
with Maclure the honor of having founded American geology, taught 
were older 
line schists of the Green mountains; above which he placed the first 
qu se and calcareous formations, the lower Taconic of Emmons. In 
i d 
limestones, and was succeeded by a third or lower secondary series, at- 
on’s Geol. Text-book 1832.) In opposition to the facts of physical struc- 
Ist, 
is 
h 
Calciferous formations of New York, which are found horizontally resting 
appears to 
Ase 
98,— 
