a 
pers 
NOVA SCOTIAN GEOLOGY—HONEYMAN. 6 
The author of Acadian Geology, who is a reader of the 
Witness, and always on the qui vive in matters relating to the 
Geology of Nova Scotia, shortly after sent me a letter from 
Montreal, in which he expressed his gratification at my directing 
attention to the interestmg rocks of Arisaig, observing that the 
rocks were “ probably” of Lower Helderberg age. In a letter 
replying, I said that they were “certainly” of Upper Ludlow 
age, and that my reasons for regarding them to be of that age 
would be seen from the abstract of my paper, then in the press, 
when published. 
I was not then the owner of a copy of Acadian Geology. I 
had only seen and read a copy of it in Pietou immediately after 
its publication. f distinctly remembered, however, that they 
were considered to be of Hamilton and Chemung age, U. S. 
Devonian. 
In now regarding them as “probably Lower Helderberg, 
U.5S.,” the author had adopted the only alternative. I suspected 
that the opinion expressed was suggested by the observation in 
the Presbyterian Witness. This may be what the author calls 
“simultaneously and independently” in Acadian Geology, second 
edition. 
I did not refer to the correspondence in my “Retrospect.” I 
only referred to printed documents, not considering that the 
author was committed to the opinion, somewhat cautiously ex- 
pressed, until it appeared in printed form. I have searched in 
vain to find any evidence of this kind until 1860. It is not to 
be found in the catalogue of “Acadian Geology.” 
On this ground I preferred the claim to having taken “the 
first steps onward.” 
> 
CORRECTIONS. 
I find that, trusting my memory, I was led into error in 
some of the reasons that I assigned as objections to the division 
of the Arisaig fossiliferous rocks into Upper and Lower by the 
author of “Acadian Geology.” When I wrote the objection, 1 
forgot that he made the division in his paper in the Canadian 
Naturalist in 1860. : 
At the time the division was made it seemed altogether pro- 
