16 



KEPORT — 1884. 



f ■; 



ilii 



found here are Vcdccophycus, nnraerous Corals, and Cephiil<ipods, some Bracliicipodj 

 and Tiilobitt's. 



Tho lociilitips north and nortli-west of Winnipeg prive a rather different fauna, 

 Stony Mountiiin risi's in a horscfhoe sha]io, al)out sixty feet above the prairie on 

 llie north and nortii-west sides, sloping frradually down to the prairie-level on Xhv 

 oast. There is here also sonu! dritt, beneath which are very distinct glacial striie 

 running nortii-north-west. lirachiopoda are very nnraerous here. At Stonewall 

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



The author gives lists of fossils from tiie diiferent localities. In many rases 

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

 followin"' table 'aves the chief characteristics: — ■ 



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

 descending order : — ■ 



Stonewall. Niagara limestone. 



/ Upper beds v '' 



Stony Moiuitain 

 Selkirk, &c. 



I Lower beds 



Hudson lliver. 

 'J'lenton. 



ij. The Aimtitc Deposits of the Frovince of Qnchee. By G. C. Bnowx. 



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



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

 in much the same sense! that quartz is a con.stituent of granite ; always remem- 

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

 In such a type there may l)e pre.sent tive, ten, or tii'teen ]ier cent, of apatite dis- 

 seminated in particles and in pieces from the sixe of a ]>ea to that of a iiazel-nut, 

 inclosed in greenish pyroxenite. Jlica is not always present. One of thes(> apntito 

 ■bearing pyruxenites has Ijoen observed to occupy the greater part of a surface of 

 four or live rcres, having the general strike of the neighbourhood, the lesser part 

 Ijeing foreign rocks, and both witii a leniith of four or tive times the breadth. 

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

 linclosing roclc, such as occur witli crystal.^. In detaching a piece some of the 

 mineral may be lelt attached to the pyroxeiiite or some pyroxenite may come away 

 with the apatite. 



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

 ■apatite, some exceeding- a thousand ton.'<, leaving tht^ same indistinct walls of 

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

 ■pounds in weight) more generally roundfd th.".n roughly angular, with the snnie 

 indistinct walls of separation, and rarely containing dis.^eminated pyroxenite grain?. 

 Massive iron-])yrites is generally met witli 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 



