326 The American Geologist. Ba 
that his interpretation of the facts coincides with that adopted 
years ago by the geologists of Canada and Minnesota. 
In reality he had already unconsciously admitted this point 
in earlier writings when in describing the Kitchi schists with 
their ferruginous cherts and jaspers near Marquette he in- 
cluded them in the Basement Complex ;* but it is well to have 
a direct confirmation of the views of the northern geologists 
by so able a student of the Pre-Cambrian as professor Vani 
Hise. 
According to his new grouping the Pre-Cambrian includes 
three sedimentary series containing iron ores, the lowest, 
which he places in the Archean, corresponding to the Kee- 
watin or Lower Huronian of the Canadian and Minnesota 
geologists; the next which he calls Lower Huronian, corres- 
ponding to the Upper Huronian or so-called typical Huronian 
of Canada; and the uppermost, which he calls Upper Hur- 
onian, being the same as the Canadian and Minnesota Animi- 
kie. Professor Van Hise finds the same number and arrange- 
ment of formations, but believes the Animikie to be the equiv- 
alent of the Huronian of Logan and Murray, and therefore 
gives the formations a different set of names. 
Professor Willmott in an excellent article on “The Nomen- 
clature of the Lake Superior Formations’’+ discusses the sub- 
ject and brings forward what appear to be conclusive proofs 
that the nomenclature mentioned above as used by the Can- 
adian and Minnesota geologists is the correct one. 
An editorial note in the same number of the Journal ot 
Geology signed with professor Van Hise’s initials says that 
the paper “proposes several radical changes from the succes- 
sion as held by those who have for many years laboriously 
studied this region. At the present time I shall not dis- 
cuss professor Willmott’s proposals. I merely wish to state 
that the evidence presented for them appears to me wholly 
inadequate, and I therefore record my dissent.” 
As my own field work has lain for several years in the 
Huronian region of Ontario, in the course of which every im- 
portant area of that formation from the provinces of Quebec 
to Minnesota has been visited and most of the critical points 
*U. S. Geol. Sur., Monograph xxviii, pp. 186-7, etc.; Ont. Bur. Mines, 
1900, p. 185. 
+ Jour. Geol., vol. x, No. 1, 1902, pp. 67-76. 
