136 Reviews—Greological Survey of Canada. 
Northumberland and Restigouche, New Brunswick. Their report 
is accompanied with a geologically coloured map on a scale of four 
miles to one inch. One of the objects of this Survey was to deter- 
mine “the succession of the Silurian strata in the northern portion of 
the province, and their relations to other systems.” The formations 
met with were the following :— 
Lower Carboniferous. 
Devonian. 
Silurian. 
Cambro-Silurian. 
Pre-Cambrian. 
Granite and related rocks. 
The Lower Carboniferous rocks consist mainly of red sandstones, 
grits and conglomerates, with extensive beds of gypsum, near the 
top of the formation. The Devonian is represented by a small 
patch of soft calcareous sandstones and slates, of Oriskany age, as 
shown by the fossils, determined by Mr. H. M. Ami. Caleareous 
slates, fossiliferous in places, are the prevailing rocks of Silurian 
age. ‘The Cambro-Silurian consists chiefly of hard quartzites and 
slates, apparently unfossiliferous; other rocks of this system are 
of a more highly altered, schistose, and foliated character. The 
Pre-Cambrian rocks are hard crystalline felsites, gneisses, felspathic 
and other schists, all highly contorted. Granite occurs in two areas, 
and is of similar character and age (Devonian) to that which is 
found in intrusive masses further to the south. 
A voluminous report is contributed to the volume by Mr. Hugh 
Fletcher (pp. 1 P-128 P) containing an account of explorations and 
surveys in the counties of Guysborough, Antigonish, and Pictou, 
Nova Scotia. This report embodies the results of work (mostly 
topographical) done during the summers of 1882-1886. A map of 
the region on a scale of 1 mile to an inch has been constructed. 
The physical geography of the district presents no features worthy 
of special note. The highest land extends along the shores of the 
Gulf of St. Lawrence, from Cape George to the Hast River of Pictou, 
but the highest summits rarely exceed 1000 feet, and deep and 
broad valleys are cut by the rivers flowing into the Gulf. The 
geological systems recognized in the area included in Mr. Fletcher’s 
explorations are the following :— 
Permian. Silurian. 
Carboniferous. Cambro-Silurian. 
Devonian. Pre-Cambrian. 
There are associated volcanic rocks in all but the Permian. 
The Carboniferous rocks, which are the most important in the 
series, ‘“‘occupy three well-marked belts, often folded obliquely to 
the longer axis.” These are (1) the St. George’s Bay basin; (2) the 
the Merigomish basin; (8) the St. Mary’s basin; the latter holding 
fossil plants, which would indicate either a Millstone Grit or Lower 
Carboniferous age; but the altered aspect of the rocks would rather 
refer it to the latter. 
The volcanic rocks belong to several distinct periods which are 
