652 The American Naturalist. (July, 
region, as known thirty years ago, and since their conglomerate and 
slaty characters were similar to those in some strata of the system first 
named, it was natural, or at least it was venial, to include these latter 
with the former. If, now, we have learned that they are geologically 
incongruous with the higher, it appears obviously necessary to drop 
them off, however prolonged the period in which they have been 
associated together. 
‘* This is the view which we have maintained for several years. We 
have insisted that the so-called Huronian of Lake Superior is an older 
system than the Huronian of Lake Huron. But we were not aware, it 
must be confessed, until our recent studies, that the same older system 
was actually present north of Lake Huron, 
«If, then, we restrict the term Huronian to the upper system, it 
remains attached to the best-known and characteristic portion of the 
old complex Huronian. There will remain the older system, not dis- 
tinctively named until Dr. Lawson in 1866 bestowed upon it the name 
‘Kewatian.’ In volume, in petrographic and stratigraphic characters’ 
itis a system. It should therefore receive a name of systemic form. 
Such name is Kewatian, homophonous with Huronian, Silurian, and the 
remaining systemic names. f 
hether the term Huronian must not yield to the priority of 
Taconic or Cambrian, we will not discuss. Whether Kewatian can 
take precedence over Azoic, Taconic, and Cambrian, remains to be 
decided, It is the misfortune of all these names, except Kewatian, 
that they were originally intended to cover a complex of strata which 
has been proved to constitute two distinct systems.”’ 
Pre-Paleozoic Surface of the Archean Terranes of 
anada.—Mr, A. C. Lawson has collected evidence to show that 
the hummocky aspect of the Archean terranes of North America is 
not due to the action of the ice of the Glacial epoch, but that it was 
characteristic of the surface upon which the earliest Paleozoic sedi- 
ments were deposited. In pursuing the work incident to this paper, 
Mr. Lawson found also excellent presumptive evidence that the greater 
part, if not the whole, of the Canadian Archean terranes were at one 
time covered by Paleozoicstrata. (Bull. Geol. Soc. Am., Vol. I., pp. 
113-174.) 
A Mesozoic Fish Fauna in New South Wales.'—Mr. A. 
Smith Woodward has recently published a memoir on some fossil fishes 
1 The Fossil Fishes of the Hawkesburg Series at Gosford. By A. Smith Woodward, 
F.ZS., F.G.S. Memoirs of the Geological Survey of New South Wales. Paleontology, 
No. 4. 



