186 REVIEWS — WANDERINGS OF AN ARTIST. 



bonates, at temperatures between 130° and 200° centigrade. A 

 portion of the magnesia is always, under these conditions, converted 

 into magnesite, and may be partially separated from the dolomite, 

 by taking advantage of the fact that it is less soluble in acetic acid 

 at the temperature of 60*^ !P. than the double carbonate. In nature, 

 the combination must take place at the lowest possible temperature, 

 and one which is probably insufficient to produce the insoluble mag- 

 nesite. This, when once found, I have shown to have no tendency 

 to unite with carbonate of lime. 



The application of these observations to the various conditions in 

 which dolomites and magnesites are met with in nature, and espe- 

 cially to their association with gypsum and anhydrite, is evident. 

 The details of my experiments will appear in the Eeport of the 

 Greological Survey for 1858, 



Montreal, 25th April, 1859. 



REVIEWS. 



Wanderings of an Artist among the Indians of North America, front 

 Canada to Vancouver'' s Island and Oregon, tlirougJi the ISbidson^ s 

 Bay Company'' s Territory and hack again. By Paul Kane. London : 

 Longmans, 1859. 



It has been long familiar to Canadians that we had among our- 

 selves one who, in search of the materials for his art as a painter, 

 had explored the great North- West, and brought back with him many 

 graphic records and curious reminiscences of Indian life. The pages 

 of our own Journal have been repeatedly enriched from his notes of 

 travel, and we hail with cordial welcome the issue of the full narra- 

 tive of his wanderings in so tasteful and creditable a form. With 

 somewhat of the stoical taciturnity of his Indian friends, our author 

 has been in no hurry to invite the public to share in his strange and 

 stirring adventures. He began his wanderings some fourteen years 

 ago, in the summer of 1845, and returned to Toronto in 1848 ; so 

 that he has brooded over these notes of his far wanderings for more 

 than the Horatian term, while working out his pencillings into more 

 complete and enduring forms. We are glad, however, to have good 



