94 M. FE. Wadsworth—Rocks of Newfoundland. 
XIV.—WNotes on the Rocks and Ore-Deposits in the vicinity 
og * Notre Dame Bay, Newfoundland ; by M. E. Wapsworru. 
INTRODUCTORY. 
THIS paper has been written for the purpose of presenting 
some of the results of a short trip to the island of Newfound- 
land in the summer of 1880. Since the object of the journey 
was a commercial one in behalf of parties interested in some ore 
deposits about the Notré Dame Bay, the observations and col- 
lections were naturally confined to the immediate vicinity of 
the mineral lands, and limited as to tim 
In the descriptions of the rocks collected the object has been 
rather to describe the rock structure and to trace its history, than 
to enter upon elaborate descriptions of the contained minerals. 
The principles ao bi ae for the nomenclature here given are 
those announced in the Bulletin of the Museum of Comparative 
to secondary changes since the time of eruption. The o 
rocks are classed as varieties under the modern species whose ‘- 
tered form they are supposed to be, and the mineral composition 
is regarded not as a fixed but a changing factor. Hence the 
traces of the original minerals and of the original structure of 
rock are here allowed much greater weight in nomenclature 
than is given to the secondary or alteration minerals, which 
now form the chief mass of these older rocks. 
he districts examined were seeuy various points been 
’ Exploits Burnt Island and Betts Cov 
Tue Basattr Rocks. © 
i Melaphyr (Lava Flows). 
Much of the coast of Exploits Burnt Island is formed by a 
series of lava flows, These flows are seen to have rolled and 
tumbled over one another down the steep jt in huge 
ece 
slopes. The lines of motion and the scum-like pega ete 
with the few large cells, are plainly to be seen, wonderfully 
Se RE AN hn ole Sere N a nae eae A asim OS ky Regie 
= 
fe Sea MB a 
