36 
The Devono-Silurian boundary dispute was adjusted some years ago, 
as it was shown that there is no Helderbergian at Arisaig, and no transition 
from Silurian into Devonian either at Dalhousie or Gaspe. The Helder- 
bergian is now regarded by all as the base of the Devonian, a conclusion 
first reached in America by Dr. Clarke, in 1889. 
In 1904, when Schuchert took up residence at Yale University, he 
found there no fossils from the Maritime Provinces of Canada. Con- 
sequently, in July and August, 1905, with Robert Gordon of Cumberland, 
Maryland, he revisited the Gaspe country and made extensive collections. 
He was again in this region with the International Geological Congress, 
held in Canada in 1913. Ten years later, Miss J. Doris Dart, a graduate 
student under his direction at Yale, was assigned the stratigraphy and 
faunas of the Silurian of Port Daniel area as a problem to be worked out 
in detail. The field work in connexion with this study was made possible 
by the Geological Survey, Canada, and both authors spent most of that 
summer in Gaspe. Finally, in 1924, the senior author devoted a month 
in the field to checking up the previous work. The results of these two 
field seasons, and of a study of the collections in the laboratory at Yale, 
make up the present paper. 
THE GEOLOGICAL SECTION IN BRIEF 
Recent deposits later than the Pleistocene, in part alluvial, but in the 
main brackish swamp and marine beach beds. 
Latest Pleistocene (Champlainian) cut terraces and beach shingle 
materials found at various levels up to about 90 feet above present high 
tide. These terraces are best seen between Anse-&-la-Barbe and Anse-aux- 
Gascons, where three distinct terraces are well preserved. The same 
terraces are to be seen about Port Daniel and in the valleys of the Little 
and Middle branches of Port Daniel river. 
Glacial. Everywhere there is evidence, though never in great abun- 
dance, of Pleistocene ice work. Where the native strata are recently 
uncovered, they are seen to be well striated. The hills, and especially 
the shore, have occasional boulders, up to 10 feet across, of gneisses, 
granite, green schist, a metamorphosed feldspathic conglomerate, and 
Ordovician sandstones. Almost everywhere on the lower terraces is a 
thin veneer of more or less rounded rubble composed of small pieces of 
Silurian, Ordovician, Bonaventure, and pre-Ordovician rocks, many 
of which are striated. Nowhere does one see any large glacial accumula- 
tions in moraines or sand outwashes, and what there is of ice work looks 
very recent. 
Erosion during late Palaeozoic, Mesozoic, and Cenozoic time. It 
was probably during the Pliocene that this matured surface of erosion 
was elevated to about its present level. Since then it has been dissected 
into the topography of today. 
Bonaventure red conglomerates and sandstones of seemingly earliest 
Mississippian age. In the Percd-Gaspe area Dr. Clarke found the Upper 
Devonian passing unbroken into the red beds of the Bonaventure series. 
