444 THE PROGRESS OF GEOLOGICAL INVESTIGATION 
of detail shewn in such of these map-sheets as have been pub- 
lished, attest the scientific training of their author and the extreme 
care which has been taken in their preparation. Much attention 
has been devoted to the accurate mapping of the important coal- 
basins of Pictou and Cumberland counties, and to the determin- 
ation of the economic value of other deposits of economic 
minerals which are found in the area. 
The mapping of the great belt of rocks along the Atlantic 
coast, including the slates, quartzites and granites, which in the 
early days of Gesner were styled Primitive and Transition, and 
in which the gold mines of the province are principally located, 
has been carried out along similar lines by Mr. E. R. Faribault, 
also of the Geological Survey staff. In addition to the general 
maps, shewing the distribution of the several rock formations of 
that district, a valuable series of map-sheets shewing the detailed 
structure of the principal gold areas has been prepared. Some 
of these have been already published, while others are in course 
of preparation and are of inestimable value to the mining com- 
munity of the province. The complicated series of rocks which 
were broadly outlined half a century ago by Gesner and Dawson 
have thus been worked out in the greatest detail, and the several 
geological divisions indicated in the clearest manner. 
Among those who have done more or less work in the prov- 
ince, it may be said that the writer of this article, in 1884, in 
connection with his work in south-eastern New Brunswick, spent 
some weeks in tracing out the formations in the area between 
the Bay of Fundy and Northumberland Straits in the prepara- 
tion of the map of Cumberland county, 
Tn 1891 and 1892, Mr. R. Chalmers made a series of careful 
examinations in connection with the surface deposits of Cumber- 
land county, with particular reference to the glaciation of that 
district ; and in the years from 1890 to 1896, Dr. L. W. Bailey, 
of the University of New Brunswick, carried on a somewhat 
extended examination of the southern and western portions of 
the province, including the counties of Digby, Yarmouth, Queens 
and Annapolis. A detailed report of the work thus done, 
