109 



tory and general conditions of the region ; Pt. B : Silver Mining ; 

 (J) Low — Report of Explorations in James' Bay; (K) Ells — Second 

 Report on the Geology of a portion of the Province of Quebec ; (M) 

 Bailey and McTnnes — Geology of portions of New Brunswick, Que- 

 bec and Maine ; (R) Dawson — The Mineral Wealth of British 

 Columbia, with annotated list of localities of minerals of economic 

 value ; (T) Hoffmann — Chemical Contributions to the Geology of 

 Canada. 



Besides the above Reports tliere have also appeared (a) Mr. Bru- 

 niell's Report of the Mineral Statistics for 1888, and (5) Supplementally 

 xs'ote on Silver Mining in the Lake Superior district by Mr. Ingall. 



H. M. A. 



" On the Cambrian Organisms in Acadia." By G. F. Matthew, M.A., 

 F.RS.C. Can. Rec, Sc, Vol. Ill, No. YII, 383-387, Montreal, 

 July, 1889. 



This number of the " Canadian Record of Science," which contains 

 no less than six palaeontological contributions, opens with Mr. Mat- 

 thew's paper above cited. It forms an abstract of a paper read before the 

 Royal fcociety of Canada in May, 1879. The author enumerates the recent 

 discoveries made in the fauna of the St. John (Acadian) group, and 

 points out their significance in the light of what is at present known of 

 the Cambrian system in Russia, Sweden, (fee, and elsewhere in 

 America. From the lower part of the Basal or Geoi'gian series, Mr. 

 Matthew has obtained representatives of no less than three families of 

 sponges, besides " Radiolarians " or allied organisms. The flora of that 

 early period is marked by the presence of a Palseochorda and a Fuco- 

 ides, F. circinatus, Bgt., whilst brachiopoda are represented by what 

 appears to be the Mickwitzia inonilifera of Schmidt; Crinoidea, by 

 ''undoubted examples of Platysolenltes (Pander)" besides " Volborthella 

 tenuis, a minute cephalopod." The St. John or Acadian group is then 

 divided into four general stages or divisions, the uppermost of which 

 belongs to the Ordovician system ; these divisions are as follows : — 



Fauna and Flora of Division (stage) 1. — (Paradoxides Beds). 



Fauna of Division (stage) 2. — (Olenus Beds). 



Fauna of Division (stage) 3. — (Peltura Beds). 



Fauna of Arenig group (Ordivician), 



