﻿158 Canadian Record of Science. 



with the Signal Hill Series and Eandom Sound Series 

 of Murray and Howley in Newfoundland, with the 

 Kewenian or Kewenawan Series of Lake Superior, which, 

 according to the observations of the Canadian Survey, 

 covers great areas between Lake Superior and the Arctic 

 Sea. It may be correlated with the Chuar and Grand 

 Canyon formations of Walcott in Arizona. In the latter 

 these occur with a few other fossils, including a fragment 

 of a Trilobite, numerous specimens of large laminated 

 forms, which may be regarded as connecting the Cryptozoon 

 of the Cambrian, and the Archmozoon of the Upper 

 Laurentian with Eozoon.^ 



If, with Matthew, we regard the Etcheminian beds and 

 their equivalents as lowest Palaeozoic, then the fossiliferous 

 formations underlying these should be included under 

 the term Eozoic, proposed by the author many years 

 ago in connection with the description of Eozoon ; and the 

 term Algonkian, used by the United States Geological 

 Survey, will include both Palaeozoic and Eozoic formations.^ 



Next below the Etcheminian in New Brunswick, 

 Newfoundland, Lake Superior and Lake Huron, and also, 

 apparently, in Colorado, we have the great thickness 

 of mostly coarse, clastic sediments, associated with 

 contemporaneous volcanic outflows and ash-rocks, ori- 

 ginally described by Logan and Murray as the Huronian 

 system. These rocks are of a character not likely to 

 yield many fossils. There are, however, slates, limestones, 

 and iron ores associated with them, which have afforded 

 laminated bodies comparable with Eozoon, burrows of 

 worms, spicules of sponges and indeterminate fragments 

 referable to Algae or to Zoophytes. In ' rocks of similar 

 age in Brittany, Barrels and Cayeux announce the 

 occurrence of Sponges, Foraminifera and Eadiolarians. 



1 Hiill, Report on Palaeintology of N. York, No. 36, Matthew Bulletin, N. Bruns- 

 wick, Nat. Hist. Society, 1890, Walcott I.e. 



2 This term is, in any case, unhappy in form and sense, and perhaps should 

 be dropped. 



