CANADA. 355 



cover Sir William's upper distinct system — yet I have been over the same 

 ground. The Huronian and Hastings series of rocks I believe to be simply an 

 altered condition, on their westward extension, of the lower portion of my 

 second system." 



Retracing our steps, we see that in 1870, under date of December 13, 

 18G9, Dr. Hunt held that the £ozoo)i Canadense of Madoc, and hence 

 the Hastings series, occurred in the Laurentian. (Am. Jour. Sci., 1870, 

 (2 ) XLIX. 75-78.) Later, under date of May 10, 1870, he referred the 

 Hastings series to the Terranovan, but it would seem that, when the 

 term Terranovan series was first employed by him, it was regarded as 

 being, in part at least, Potsdam. He remai'ks : — 



" From these investigations of Mr. Murray we learn that between the Lau- 

 rentian and the Quebec group, there exists a series of several thousand feet of 

 strata, including soft bluish-grey mica-slates and micaceous limestones, belong- 

 ing to the Potsdam group ; besides a great mass of whitish granitoid mica- 

 slates, whose relation to the Potsdam is still uncertain. To the whole of these 

 we may perhaps give the provisional name of the Terranovan series, in allusion 

 to the name Newfoundland." (Am. Jour. Sci., 1870, (2 ) L. 85, 87, 88.) 



To this series he referred the ^yhite Mountain rocks, as well as certain 

 rocks in New Brunswick. 



In the Twenty-first Annual Report of the Regents of the Univer- 

 sity of New York, Dr. Hunt remarked of the Hastings seines (1871, 

 p. 48):- 



" In the county of Hastings, in the province of Ontario, not less than 21,000 

 feet of strata, consisting of crystalline schists, limestones and diorites, are found 

 resting conformably upon the Laiu-entian series." 



In a postscript {I. c, p. 98) he states : — 



" More recent researches by the Geological Survey of Canada have shown 

 that the rocks of Hastings county .... rest unconformably upon the Lau- 

 rentian, and belong to one. and possibly two distinct sj-stems. The upper and 

 larger portion consists in a great part of mica-schists and micaceous limestones, 

 while at the base are great masses of dioritic and hornblendic schists with 

 iron ore, possibly of Huronian age." 



In some remarks of Dr. Hunt, in 1873, it was stated : — 



" As regards the Xorian, which had once been joined by the Laurentian, 

 Dr. Hunt had elsewhere shown that we had reason for suspecting that it might 

 be more recent than the Huronian, and possibly than the Montalban, a conclu- 

 sion which appeared to be confirmed by the facts made known by Hitchcock.'' 

 (Proc. Bost. Soc. Nat. Hist., 1873, XV. 310.) 



