40 L. W. BAILEY ON THE SILURIAN 
Mount Wissick, and including the heavy conglomerates of Black and Burnt Points and the 
rocks of the Tuladie and Cabano, being referable to that group, while those to the south, 
together with those of Mount Wissick, are to be referred to the Gaspé Limestone series 
or Nilurian. It is, however, to be observed that Sir William himself seems to have been 
in doubt upon this point, for while on one page (423) he describes the conglomerates of 
Black Point as belonging to the Quebec group, he subsequently refers to them (page 427) 
as being newer than the latter. On the other hand, the very striking resemblances which 
portions of these beds bear to those of the Beccaguimic and the Fish River lakes can hardly 
fail to attract attention. Thus the conglomerates of Black Point, though vastly thicker 
and coarser than anything seen in New Brunswick or Maine, apparently occupy the same 
position as those described on the southern side of the great Silurian plateau. They are, 
indeed, compared by Logan with a certain band of conglomerates met with near the 
mouth of the Siegas, fifty or more miles to the south, in the Silurian tract, a comparison 
which further indicates the uncertainty of opinion in which they were held by him. 
Again, both the green and red shales and fossiliferous limestones of Mount Wissick, 
though as regards the latter of much greater thickness, occupy the same relative position 
and bear much resemblance, both in aspect and in their fossils, to those of Fish River and 
the Beccaguimic. These fossils include large corals (Favosites) Brachiopods (Strophomena, 
Leptena, Pentamerus, etc.), besides several species of Trilobites, and are probably of Lower 
Helderberg age, but until they have been accurately determined this comparison is uncer- 
tain. The most reniarkable difference in the Mount Wissick beds, as compared either 
with those of the Beccaguimic River or the Fish River lakes, is that afforded by the 
massive white sandstones or quartzites which form the apparent base of the eminence 
referred to. No such rocks are to be met with anywhere over the extensive Silurian 
tracts of Northern Maine or New brunswick. They do, however, bear much resemblance 
to the beds of like composition seen at frequent intervals along the Portage road between 
Temiscouata and Riviére du Loup, and again along the line of the Intercolonial Railway 
between the Metapedia River and Rimouski. The greater part of these, however, belong 
to the Quebec group, while those of Mount Wissick are interstratified with the fossili- 
ferous limestones of the mountain, and are unquestionably part of the same formation. I 
am also informed by Mr. R. W. Ells that similar sandstones were found by Mr. Richardson 
to contain remains of Pentamerus oblongus. As the beds underlying them at Mount Wissick 
are almost entirely of the Quebec group, these quartzites would appear to form here the 
lowest member of the Silurian system, which would also appear to include all the beds 
of Lake Temiscouata south of this point—among them the conglomerates of Black and 
Burnt Points and the rocks of Pointe aux Trembles previously referred to the Cambro- 
Silurian. e 
The Temiscouata section, as compared with those of northern Maine and New Bruns- 
wick, previously quoted, would thus stand as given on the succeeding page. 
I may add that, since reading the above paper, further examinations of the region 
about Lake Temiscouata, as well as of portions of Aroostook county, Maine, have been 
made, and numerous fossils obtained from Pointe aux Trembles, Tuladie Lake and else- 
where. These are now in the hands of Mr. Whiteaves, and the results of their examination 
will appear in the reports of the Geological Survey. 
