326 Sir W. E. Logan on the Quebec sii and 
shales, Upper 
Jittoral sandstones. Potelan 
slg orhan limestones, 
wip 
‘ao1ye 
Dar helen 
Red and green shaled: 
treen sandstones.—Sillery formation. 
%, Trenton group of limestones; v. Utica shales 
m0 ‘SLAQ'T 
Ve 
‘dnoiZ sagen 
y 
aS 
\\ / Ez = 
f° C - wit 
u. Hudson River eandions 
Hod. Varlioil ecale of the section, one : 
Teen's Sree Halon Birdseye aid Black River, the Trenton, 2 
m River formations. This we have bape 
wee a= that the Wears these formations is Se 
esting ng (at P.) on one of those littoral deposits of P th 
, like that at St. Ambroise, th are still met W 
outcrop, 
