452 NOTES ON DR. AMI’S PAPER ON DICTYONEMA SLATES—POOLE. 
It certainly is new to place these Dictyonema beds as 
Cambrian, and it is not easy to understand how Dr. Ami came 
to change the views he expressed before the Royal Society in 
1900, without visiting the locality, unless he has been influenced 
by the examination lately made by Mr. H. Fletcher. I should 
like to know what Mr. Fletcher has to say of the stratigraphy 
and the age of these fossils. I know he has suspected some 
rocks in this lIceality to be Cambrian, and that he got Mr. 
Faribault to go over the ground with him. Mr. Faribault, as 
we all know, has for years made a study of the Cambrian in 
Nova Scotia, and has written a bulletin of the greatest practical 
value to miners, on the structure of these rocks and the manner 
of occurrence in them of auriferous leads and paystreaks. So 
much has this pamphlet been appreciated that our Mining 
Society has issued nearly 1000 copies to miners, engineers and 
students. I may also say I hestitate to accept Dr. Ami’s interpre- 
tation of the paragraph he quotes from “ Acadian Geology,” in 
which Sir W. Dawson says: “ These slates . . . are continued in 
the hills of New Canaan, where they contain crinoidal joints, 
fossil shells, corals, and in some beds of fawn-colored slate, beau- 
tiful fanlike expansions of the pretty Dictyonema.” Therefore 
before accepting a supposition that he meant otherwise than he 
wrote, I would like to know the views of Mr. Fletcher. Prof. 
Haycock, of Wolfville, has been with Mr. Fietcher in this field, 
and has besides made explorations on his own account. What — 
are his views? If the crinoid, shell and coral beds mentioned 
are associated with the Dictyonema beds, the series of fossils 
they probably yield should determine beyond doubt the age 
of Dictyonema Webstert. These associate fossils are not 
enumerated. 
Sir W. Dawson, it is true, spoke of them as Upper Silurian, 
but then he classed the overlying beds of Bear River as 
Devonian. Dr. Honeyman put them down as Lower Silurian, 
and the overlying beds as Upper Silurian, and thus maintained 
the same relative positions. 
Dr. Ami quotes from his “Synopsis of the Geology of 
Canade,” in which many references are made to Nova Scotian 
