[BAILEY] GEOLOGICAL CORRELATIONS IN NEW BRUNSWICK 145 
when, still later, in 1898, the discovery was made by Mr. Wilson, of 
the survey staff, that a portion of the slates in the parish of Canterbury, 
also at that time referred to the Cambro-Silurian, contained typical 
Silurian forms of life, and a similar discovery was made by the writer 
as regards certain limestones in the settlement of Waterville, fully 
thirty miles distant from the former, it really began to look as though 
a very serious mistake had been made in the coloration of the geolo- 
gical map, and in the age assigned to these important groups of strata. 
For at threeif not four different and widely removed points fossiliferous 
beds had been observed, in each case indicating a Silurian or even more 
recent age, while nowhere, except upon the Beccaguimic river, had 
anything older than Silurian been gathered, and this only Cambro- 
Silurian. Proof of the existence of Cambrian rocks in the belts under 
consideration was wholly wanting. And yet it is now almost certain 
that the old view which regarded one at least of these belts as being 
in large part Cambrian is the true one, while reasons exist for looking 
upon considerable areas within the same belt as being still more ancient 
or Huronian. 
The facts upon which this belief reposes were observed only last 
summer (1900) by the writer, who in the course of investigations made 
under direction of the Geological Survey, with a view to determine 
more exactly the position and relations of the fossiliferous Silurian 
rocks of Canterbury, was fortunate enough to find strata carrying 
characteristic Cambrian forms, besides other evidence confirming views 
which upon other grounds he had long entertained as to the geological 
age of this part of New Brunswick. 
The fossils in question occur in a series of very black and hard 
siliceous and pyritous slates exposed upon the left bank of Eel river 
quite near to the little village of Benton, and consist of numerous 
remains, in some instances very perfectly preserved, of the beautiful 
graptolitic form known as Dictyonema flabelliforme vel sociale, Eichwald, 
a species found at Navy Island, near St. John, as well as on the lower 
St. Lawrence, and figured by Matthew in Vol. IX, Series I, of the 
Transactions of the Royal Society. Both Dr. Matthew and Dr. Ami 
agree in the determination of the species, as in the belief that it fixes 
the age of the containing beds as Upper Cambrian. We have now 
to consider the bearing of this determination upon the age and relations 
of the associated strata and of other portions of the district. 
The black graptolitic slates of Benton are separated by an 
interval of only a few hundred yards from a great band of crystalline 
rocks which, upon the side nearest to the slates, are of the nature of 
partially altered and obscurely stratified deposits, but which at a short 
