302 PROCEEDINGS OF THE CANADIAN INSTITUTE. 



of these "shows" have been opened on a single lot. Dr. Hunt and 

 Mr. Gordon Broome have both described a group of about twenty 

 nearly parallel veins of apatite on lot 4, range V, of North Burgess. 

 (Geol. Survey Reports, 1863-()6, pages "JSG-ST, and 1870-71, page 

 317). They all diminish rapidly north-westward in receding from 

 the shore of Rideau Lake and may belong to the class of parallel 

 joint-deposits I have described. In this township, and those adjacent 

 to it, the apatite is often found in isolated crystals and masses in 

 calcite or coarsely crystalline limestone, which is generally of some 

 reddish shade and is mostly associated with or near to the pyroxene 

 rock. These deposits Dr. Hunt regards as veins also. 



Apatite has been detected in a very large number of places in the 

 two principal regions above referred to and in a good many localities 

 in Renfrew county. In addition to these, it has been found in 

 Canada in crystalline limestone in the Augmentation of Grenville 

 and at the Calumet Falls in the latter township, at St. Roch in the 

 parish and county of Assumption, in an intrusive mass of fine grained 

 grey dolerite, in the township of Barford (Eastern Townships), in a 

 vein of quartz with copper pyrites, native copper and mica. I have 

 also found it in crystals with mica in a compact grey dolomite in the 

 township of March, county of Carleton. It is mentioned among the 

 minerals brought home in 1878 by Mr. Ludwig Kumlien from Cum- 

 berland Inlet, where the rocks are believed to be Laurentian. I 

 may mention, in this connection, that near North Bluff in Hudson's 

 Strait I have picked up a piece of crystalline limestone quite like 

 one of the common Laurentian varieties. Sir John Richardson found 

 apatite in the neighborhood of the Coppermine River. 



I have already noticed its occurrence in igneous rocks at Trout 

 Lake, north of Lake Huron, in the isolated mountains of the Pro- 

 vince of Quebec, and on the Bay of Chaleur. 



If the view I have taken of the mode of occurrence of our prin- 

 cipal apatite deposits be not suificiently elaborated or satisfactory, it 

 may at all events point the way to further investigations in this 

 direction. 



Mr. Notman mentioned the view that phosphates being 

 fertilizers, must be of animal origin. 



Mr. Shutt, referring to a recent paper by Dr. G. Dawson 

 maintaining that view, argued against it by showing that the 



