68 NOVA SCOTIAN GEOLOGY—HONEYMAN. 
of the Canadian Geological Survey arranged in the Canadian 
Mineral Department, I was somewhat surprised to find a suite of 
specimens from George’s River, Cape Breton, (the Cape Breton 
representative of my “ Lower Arisaig series,”—vide Trans.,) 
arranged with others from C. B. in the Laurentian division, I 
was led to believe that the Geological Survey still followed in 
the wake of “Acadian Geology.” I was therefore not at all sur- 
prised to find Mr. Selwyn, the distinguished Chief of the 
Survey, describing to the International Judges of Class 100 the 
Laurentian axis delineated on a sketch map of Nova Scotia, 
and including in it George’s River, Arisaig, and the Cobequid 
Mountains, as well as the Laurentian series of rocks of New 
Brunswick. 
PRE-SILURIAN ROCKS OF CAPE BRETON. 
August, 1876, I received the Canadian Journal containing 
Prof. Chapman’s admirable “Outlines of the Geology of Canada.” 
In the Cape Breton section I took particular notice of the 
Geology of Campbellton, Victoria County. Here the Pre-car- 
boniferous rocks are described as Pre-silurian. These had been 
examined by the author, accompanied by Mr. Fletcher of the 
Geological Survey. In the vicinity of these are the Pre-silurian 
rocks of St. Ann, from which Mr. Hendry, Dep. Comnr. of Crown 
Lands, took the specimen of Ophicaleite which was exhibited in 
the Nova Scotian Department of the Exposition de Paris, 1867. 
This was the specimen referred to in which Sir C. Wyville 
Thompson found eozonal structure. There were also the rocks 
which Mr. Hartley, of the Geological Survey, considered to be of 
Laurentian age. Mr. Robb considered the Campbellton rocks to 
be of Quebee age. 
Every Geologist that examined the Cape Breton Pre-carboni- 
ferous Crystalline rocks had thus come to form an opinion 
different from that expressed by the author of “Acadian Geo- 
logy,” who seemed still determined to maintain their Devonian 
or Upper Silurian age. 
CORRESPONDENCE. 
Not long after the receipt of the Canadian Journal, I re- 
