FROM LOWER PALÆOZOIC ROCKS. HTL 
eastern areas. Till this is done, all our correlations of these eastern deposits must be 
regarded simply as provisional approximations, liable to inevitable modification and 
improvement in the light of future discovery. The Geological Survey of Canada -possesses 
unequalled facilities for carrying on this work, in having both the eastern and western 
formations within easy reach, and both within the areas covered by the National Survey ; 
and I sincerely trust that it is reserved for that Survey to solve the great Canadian 
problem of the Quebec Group in the area in which it was first propounded. It is 
that part of Canadian geology which is of more than national importance, and that 
part of American palæozoic geology which is of world-wide interest ; and I shall be 
gratified if anything I can do or suggest will aid in advancing this great and necessary 
work." 
PROVISIONAL LIST OF FOSSILS, WITH LOCALITIES. 
Slabs from Cove Fields, near Quebec City. 
* Diplograptus foliaceus (Murch.), vars. 1. basilicus, 2. confertus, 3. platydens. 
eo gs amplexicaulis? Hall (= Dipl. rugosus, [H#mm.] confr. D. teretiusculus, His.) 
“ truncatus (?) Lapw. 
fe euglyphus, Lapw. (?) 
Corynoides calycularis, Wich. 
Dicellograptus, sp. 
Climacograptus, two sp. 
G tricornis, Hall. 
Cryptograptus tricornis, Carr. (= G. marcidus, Hall.) 
Dicranograptus tardiusculus (?) Lapw. 
Slabs from near St. John’s Market, Quebec City. 
Diplograptus rugosus, Hmm. 
Half a mile above Tartigo River. 
Dictyonema sociale, Salter (= D. flabelliforme, Hichwald.) 


1 While this Preliminary Report was passing through the press, Sir W. Dawson kindly forwarded to me a copy 
of his Report on the Redpath Museum, McGill University, for 1883, containing an article by himself on the 
“ Graptolites of the Quebec Group” (pp. 15-17). In this article reference is made to Mr. Weston’s discovery of the 
Dictyonema-bearing shales at Little White River, and to Mr. Richardson’s subsequent discovery of similar beds 
at Matane. The Dictyonema is correctly identified as the Dictyonema sociale, Salter, of the Upper Tremadoc (D. 
flabelliforme, Eichwald); and the inference is drawn that the containing beds are older than the typical, Point 
Levis rocks, and are of Upper Cambrian age. It is also pointed out that certain beds associated with the Dicty- 
onema shale contain fragments of Trilobites apparently most nearly related to those of the fauna of the Potsdam 
of Newfoundland. Finally, the author suggests that Graptolitic zones reaching from Lower Tremadoc to the 
Upper Llandeilo may ultimately be discriminated in the great mass of sediments known_as the Quebec Group. 
It is highly gratifying to find that the original views advanced by Sir W. Dawson in 1883 are practically identical 
with those laid down in the present Preliminary Report. 
* Same as Marsouin River, as regards species and rock. 
Sec. IV., 1886. 23. 
