geological notes — macdonald. 337 



5. — Magnetitic. 



There are also deposits of magnetite sands in Sable Island. 

 Attention was devoted to these long ago. It is more than 10 

 years since I received specimens. The late Professor Howe in- 

 cluded this sand in his collections at the International Exhibition 

 of London, 1862. It corresponds with the sands of Cape Breton- 

 Cape Rosier, and also No. 4, and is different from the auriferous- 

 magnetic sand of Joggin Point. I never saw gold in any speci- 

 men. Prof. Howe, in his analysis, found titanium. Any speci- 

 mens that I have seen are less magnetic than that of Cape 

 Breton. Mr. Macdonald has anew directed my attention to it by 

 presenting to the Museum a specimen of what he collected during 

 a recent visit to the Island. 



Sable Island is 95 miles south-east of Cape Canso, and may be 

 underlaid by an extension of the rocks of either Nova Scotia or 

 Cape Breton of any formation. There can be no doubt that its 

 magnetic sands are of Archsean extraction, and in all probability 

 they are glacially transparent, and that from the coast of Labra- 

 dor, where the Archsean is like that of Cape Rosier, granite and 

 garnetiferous and syenitic and magnetic. The Aretic current, 

 with its ice freight, according to the Admiralty charts, passes 

 along the south side of Sable Island bank, outside of the sound- 

 ings. This may have been the agency employed in transporting 

 the magnetic sand to Sable Island. 



Akt. IV. — Geological Notes. By Simon D. Macdonalb,F.G.S. 



SABLE ISLAND. 

 {Read January 9, 1882.) 

 Having carefully examined the different points in the vicinity 

 of the main station, where gold was said to have been found, and 

 as yet being disappointed in not finding an opening among the 

 hummocks that I could call an average section, showing the stra- 

 tification as visible on a small scale in the several indentations 

 along the shore, I turned eastward, feeling assured from the 

 gradual ascending character of the Island in this direction, and i s 

 curvature to the north-east, that I should yet find among the hills 



