NOVA SCOTIAN GHOLOGY—HONEYMAN, . 69 
ceived a letter from the author of “Acadian Geology,” requesting 
a copy of the Transactions of 1875-6, containing my papers, “A 
month among the Geological Formations of New Brunswick,” 
and “Geology of Antigonish County.” 
On receipt of the Zransactions, another letter was sent, in 
which he made some objections to my use of the terms Lower, 
Middle, and Upper Arisaig, stating that Geologists would never 
concede to one locality all the formations that I had assigned to 
it, at the same time proposing that I would call my “ Lower 
Arisaig series” the “Cobequid Mountain series,” and then he 
would accept of it.* I had adopted the nomenclature after dis- 
posing of the “Acadian Geology” division, and as a convenient 
and, to me at least, satisfactory method of indicating my opera- 
tions in Pre-carboniferous Geology, especially at Arisaig, I could 
not see any valid reason for substituting any other local nomen- 
clature in its stead, especially that preferred. If I were to 
consider it expedient to adopt any other, I would adopt “George’s 
Riwer, C. B.” which I associated with Arisaig in my paper of 
1872, following the example of the Geological Survey in its 
maps and reports of Cape Breton. For the Middle Arisaig I 
would adopt Wentworth, I. C. R., Cobequid, A, (B being em- 
ployed to represent the Wentworth fossiliferous series.) It was 
here that I first found occasion to adopt the term “ Middle Ari- 
saig.” My “Upper Arisaig series” I would then call the “Arisaig 
and Moydart series,” the last being the “Lower and Upper Ari- 
saig” of Acadian Geology. 
Considering that the Pre-silurian age of the “Lower Arisaig 
series ” has now been established, and that it may be an open 
question for some time to come, whether the series be of Lauren- 
tian, Huronian, or Lower Cambrian age, I have no objections, 
whatever to discontinue the use of the term “Lower Arisaig 
series,’ and to imitate the example of American Geologists in 
adopting the term “Archzean,” under which Prof. J. Dana has 
already placed the typical Arisaig series. “ Manual of Geology,” 
*It appears, according to his own acvount, in his address as President of the Natural History 
Society of Montreal, the author of Acadian Geology in his last EF /ition-Third, has acted on his 
suggestion, and made a ‘‘ Cobequid Series” and described it. He seems to have described my 
** Middle Series” but certainly not my ‘ Lower Series” nor the George’s River, C. B. Series,—~ 
Address Canadian Naturalist, New Series, Vol. 9, No. 3. 
