248 
Aug. F. Foerste 
lated with the Richmond formations of Ohio, Indiana, and Ken- 
tucky, and below the latter was a great mass of strata, overlying 
the black shales which in this part of Canada are correlated with 
the Utica of New York. This intermediate great mass of strata, 
between the undoubted Richmond and the supposed Utica, was 
provisionally correlated with the Lorraine of New York, where, in 
fact, all of the strata below the Queenstown red clay shales, in- 
cluding the Richmond section, had been placed by the Canadian 
Geological Survey for a long time. 
The known exposures of the so-called Lorraine Formations, in 
the province of Quebec, were isolated and rather widely scattered, 
and at first there appeared no prospect of determining their rela- 
tive position with sufficient accuracy for stratigraphic purposes, 
but later a very long continuous section was found on the Nicolet 
River, southwest of Ste. Monique, which made it possible to make 
at least a beginning on such a line of investigation. At this local- 
ity, 157 feet of fossiliferous strata are regarded as undoubtedly 
Richmond, corresponding approximately to the middle and upper 
part of the Waynesville member of the Ohio section. The base 
of this known Richmond section is drawn at the lowest horizon at 
which Strophomena planumbona and Rhynchotrema perlamellosa 
have been found. 
Below this lowest Strophomena planumbona horizon the section 
could be followed, along a continuous exposure up the river, for a 
total thickness, in descending order, of 2352 feet, or 2509 feet 
below the top of the fossiliferous section underlying the Queens- 
town red clay shales. This section by no means includes all of 
the strata down to the so-called Utica black shale, but it served 
to give clue to the approximate stratigraphic position of many of 
the isolated Lorraine exposures to be found within the province 
of Quebec. 
It was noted, however, that there were no conspicuous strati- 
graphic breaks, and that a preliminary study of the fauna, in the 
field, did not reveal any sudden faunal changes, such as are very 
serviceable for stratigraphical purposes. It is evident that much 
detailed investigation is necessary before the full value of this 
wonderful section for stratigraphic purposes has been worked out. 
Among other things, it was found difficult to determine, with 
confidence, the boundaries between the Richmond and the 
Lorraine. For instance, specimens belonging to the groups of 
