o 
40 THE HAMILTON ASSOCIATION. 
GEOLOGICAL NOTES—(ContTinueEp). 
Read before the Geological Section of the Hamilton Sctentific Association, 
Feb. 28th, 1g02. 
BY COL. C. C. GRANT. 
The writer has already brought to the notice of the Section a 
communication from the chief Palzontologist of the New York 
Geological State Survey. In reply to Dr. Clarke he stated we had not 
as yet, unfortunately, discovered in this locality the actual point of 
contact between the Niagaras and the Guelph formation of Sir W. 
Logan, and with regard to the organic remains in the respective 
series, no greater difference existed than one may find between 
the Clinton and Niagara rocks. The mineral composition of the 
beds may differ ; even that may admit of explanation. Ossilation of 
the sea-bed itself is certainly more pronounced in Silurian times, 
not only in Ontario, but in the Island of Anticosti, whose geology 
and paleontology afforded the writer such an intense satisfaction 
that he wouid willingly incur again the accidental starvation there 
experienced once for another chance of clearing up one or two unde- 
termined conclusions. 
Dr. Clarke failed to see, apparently, in the specimens of the 
Barton beds forwarded to the late Dr. Jas. Hall, satisfactory paleeon- 
tological evidence as regards the connection or separation of the 
Guelph and the underlying series, viz., the Niagaras. In reply, I 
mentioned so many of our Barton beds seemed common to both, 
that I believe Sir W. Logan’s formation can hardly be recognized 
as such, and that it merely represented the capping of the Niagaras, 
a conclusion which has already been expressed by some field geolo- 
gists in the States. 
The actual point of contact has not as yet been discovered, per- 
haps it may not be far from where Sir W. Logan supposed it may be 
found, but my impression is that the change from the one to the 
