CANADA. 



355 



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

 ground. Tiie Hiironian and Hastings series of jvcks I believe to be simply an 

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



second system.^' 



Ivctracing our steps, wc sec that in 1870, inidcr date of December 13, 

 18G9, Dr. Hunt held that tlie Eozowi Canadeuse 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 remarks : — 



** 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, nicluding soft bluish-grey mica-slates and micaceous limestones, belong- 

 ing to tlic Totsdam group ; hesid(^s a great mass of whitish graiutoid luica- 

 sLites, 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 JSTewfoundland." (Am. Jour, Sci., 1870, (2 ) L. 85, 87, 88.) 



To this scries he referred the White Mountain rocks, as well as certain 

 rocks in New Brunswick. 



Ill the Twenty-first Annual Peport of the Pegents of the Univer- 

 sity of New York, Dr. Hunt remarked of the Hastings series (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 Laurentian series." 



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



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

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

 rentian, and belong to one and possibly two distinct systems. The upper and 

 larger portion consists in a great part of niica-scliists and micaceous limestones, 

 wlulc at the base are grtsat 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 tlic Norian, which had once been joined by the Laurentian, 

 Dr. Hunt liad elsewhere shown that wc had roiason for suspecting that it mii^ht 

 be more recent than the Ilurouian, and possibly than the Montalbau, a conclu- 

 sion which ai)peared to be confirnu^d by tlie facts made known by Hitchcock." 

 (Proc. Post. Soc. Nat. Hist., 1873, XY. 310.) 



