220 The American Geologist- April, i89o 
Moreover as appears from the official report of the First In- 
ternational Geological Congress, held at Paris in September 
1878, after a communication by myself on the crystalline 
rocks of North America, Sclwyn, who was present, made 
some remarks which were thus resumed. "As to the crystal- 
line rocks, which form the Green Mountains in the province of 
Quebec, they are according to Sir. W. E. Logan, altered 
paleozoic strata, making part of the Quebec group. Mr. Sel- 
wyn however feels it his duty to say that the recent research- 
es of the geological survey of Canada have confirmed the cor- 
rectness of the view maintained for some years by Mr. Sterry 
Hunt. These crystalline rocks appear to belong to a more an- 
cient terrane than the fossiliferous strata of the Quebec 
group and probably form the equivalent of the Huronian."^ 
C. H. Hitchcock who liad for some years maintained a 
similar view, published in 1877 his final report onthe geology of 
New Hampshire wherein he calls the Altered Quebec group of 
Logan Huronian and in the second volume morever gives a map 
of New England and eastern Canada in which the areas of the 
Green Mountain series in Vermont and New Hampshire are de- 
scribed and represented as Huronian. To say as Mr. Walcott 
has done that "Selwyn in his report of 1877-78, [dated and pub- 
lished in 1879 J began the work of disintegration" in the Quebec 
group, by showing the anticlinal structure and the unconform- 
able infraposition of these crystalline rocks is so obviously con- 
trary to all the facts of the case as to require no comment. Sel- 
wyn's recognition of these facts and his frank avowal before the 
International Geological Congress in 1878 was neither more nor 
less than a final surrender on the part of Logan's successor to the 
persistent attacks upon the famous hypothesis of Mather and 
Logan, begun by me in 1857 and 1861, and supported by Mac- 
farlane on lithological grounds in 1862. The view finally formu- 
'"Quant aux roches cristallines qui forment les Montagnes Vertes dans 
la province de Quebec elles seraient d'aprf's Sir William Logan des 
couches paleozoiques altert^es faisants partie de la groupe de Quebec. M. 
Selwyn croit devoir dire cependant que les recherches recentes de la Con- 
mission Geologique du Canada ont confirme la justice de la vue soutenue 
depuis quelques annees par M. Sterry Hunt. Ces roches cristallines 
semblent done appartenir :i unterrain plus ancien que les couches 
fossilif&res du groupe de Quebec etprobablement forment 1' equivalent 
du terrain huronien," Mr. Selwyn, having spoken in English the 
thankH of the president were given to Mr. Ch. Barrois who thus re- 
sumed them in French (ioc. cit. pp 233 — 234.) 
