716 



EEPOET 1884. 



•found here are Palceophycus, numerous Corals, and Cephalopods, some Brachiopods 

 and Trilobites. 



The localities north and north-west of Winnipeg give a rather different fauna. 

 Stony Mountain rises in a horseshoe shape, about sixty feet above the prairie on 

 -the north and north-west sides, sloping gradually down to the prairie-level on the 

 east._ There is here also some driit, beneath which are very distinct glacial strife 

 running north-north-west. Brachiopoda are very numerous here. At Stonewall 

 the glacial striae are also very distinct, running in the same direction. 



The author gives lists of fossils from the different localities. In many cases 

 ■only the genera are as yet determined. The species will be numerous. The 

 following table gives the chief characteristics : — 



The relative positions of 'these, and their equivalents, appear to be as follows, in 

 descending order : — 



Stonewall. Niagara limestone. 



Stony Mountain (Upper beds f ? 



(.Lower beds Hudson River. 



Selkirk, &c. Trenton. 



■6. The Apatite Deposits of the Province of Quebec, By G. C. Brown. 



Apatite is worked for commercial purposes only in the county of Ottawa. 



One type of its deposits is that in which it occurs as a constituent of the rock, 

 'in much the same sense that quartz is a constituent of granite ; always remem- 

 bering that apatite-bearing rock is found in small masses compared with granite. 

 In such a type there may be present five, ten, or fifteen per cent, of apatite dis- 

 seminated in particles and in pieces from the size of a pea to that of a hazel-nut, 

 inclosed in greenish pyroxenite. Mica is not always present. One of these apatite- 

 bearing pyroxenites has been observed to occupy the greater part of a surface of 

 four or five acres, having the general strike of the neighbourhood, the lesser part 

 being foreign rocks, and both with a length of four or five times the breadth. 

 There are seldom clear walls of separation between the particles of apatite and the 

 inclosing rock, such as occur with crystals. In detaching a piece some of the 

 mineral may be left attached to the pyroxenite or some pyroxenite may come away 

 with the apatite. 



A further development of this type shows much fewer but larger masses of 

 apatite, some exceeding a thousand tons, leaving the same indistinct walls of 

 separation and containing pyroxenite masses (from a few pounds to a few hundred 

 pounds in weight) more generally rounded than roughly angular, with the same 

 indistinct walls of separation, and rarely containing disseminated pvroxenite grains. 

 Massive iron-pyrites is generally met with in the larger deposits but seldom in 

 ■disseminated grains. In the case of a rock not pyroxenite forming one wall of the 

 ■deposit, the apatite separates cleanly from it. The presence of massive apatite 



