212 The American OeologisL Apni, isoo 
o'clock respectively next morning. Without such efficient 
help as that of those gentlemen, and especially of Dr. Barrois 
who resumed with rare tact and judgment the remarks of 
those who could not speak French before the Congress, it is 
difficult to perceive how the Avork could have l)een carried on. 
THE GEOLOGICAL HISTORY OF THE QUEBEC GROUP. 
By T. Sterry Hunt, LL.D. 
The histor}' of the Quebec group fills a considerable place in 
American geology, and I have been at some pains to write 
and to publish elsewhere the principal facts regarding it. As 
the questions involved therein are still imperfectly understood 
it has seemed proper to me as the only survivor of those who 
were present at the naming of this group, and as the one who 
wrought its downfall, to rehearse briefly its history. 
In the American Journal of Science for February, 1890, is a 
review by Mr. Charles D. Walcott of a second report by Dr. R. 
W. Ells, of the Canada geological survey, on the geology of 
parts of the province of Quebec, wherein he treats of the un- 
crystaUine fossiliferous strata named by Logan the Quebec 
group, and also of the crystalline schists adjacent to them in 
the hills on the east and south, described by Logan as being of 
contemporary age, and the result of a so-called metamorphosis 
over a large area of the lower portions of the same Quebec 
group, and hence mapped and designated by him as the Al- 
tered Quebec group. The reviewer refers to this region of east- 
ern Canada as "the battle ground where Logan and his adher- 
ents have been finally driven from position to position until 
there is now little left to defend of what seemed in 1863, a well- 
supported position." Ells moreover, after his studies of the 
fossiliferous rocks of the group, concludes, according to Wal- 
cott, that the farther use of the name of Quebec group for the 
uncrystalline strata in question "appears not only undesirable 
but to a certain extent objectionable," although the terms 
Levis and Sillery may be retained for the subdivisions. 
