OF CENTRAL CANADA PART II. 87 



time as bicarbonate or in combination with organic acids ; and after- 

 wards, by absorption of oxygen, it becomes converted into insoluble 

 sesquioxide, and is thus deposited in a hydrated condition, mixed 

 more or less with earthy and other impurities. 



In the Province of Ontario, Bog Iron Ore occurs in small quanti- 

 ties in almost every Township, but some of the more important de- 

 posits lie in the townships of Charlotte ville, Middletown and Wind- 

 ham, in Norfolk County, on Lake Erie ; also in Camden Township 

 in Kent, West Gwillimbury in Simcoe, Bastard in Leeds, March 

 and Fitzroy, and also Vaudreuil, on the Ottawa, and elsewhere. 

 Ochres occur also at the la' ter locality, associated with the bog ore ; 

 and extensive beds have been discovered in various places in the 

 County of Middlesex ; in Walsingham Township, Norfolk Co. ; at 

 Limehouse in Halton Co. ; as well as near Owen Sound in the 

 township of Sydenham in Grey County, and in Nottawasaga Town- 

 ship in Simcoe. Also in Elzevir, Leeds and other Townships. 



Bog Iron Ore, in still more valuable deposits, occurs abundantly 

 in the Province of Quebec. The most important localities lie per- 

 haps in the Three Rivers District, or between the Rivers St. Mau- 

 rice, Batiscan and St. Anne. The old St. Maurice forges, so cele- 

 brated for their castings, were fed by the ore of this neighbourhood ; 

 and the more recently established Radnor forges, at Batiscan, draw 

 their supply from the same district. Other deposits of bog ore 

 occur in Lachenaie in I'Assomption County, Kildare in Joliette 

 County, and elsewhere in that section ; also in Templeton, Hull and 

 Eardley, on the left bank of the Ottawa. South of the St. Lawrence, 

 the ore occurs more or less abundantly in the Eastern Townships of 

 Stanbridge, Farnham, Simpson, Ascot, Stanstead, Ireland, &c., and 

 in St. Lambert, St. Yallier, Yilleray, Cacouna and elsewhere. Yal li- 

 able deposits of ochre occur especially near the mouth of the St. 

 Anne, in Montmorenci, below Quebec ; and at Cap de la Madeleine 

 and Point du Lac, near the St. Maurice, in the Three Rivers 

 District. Also in the township of Mansfield, on the Upper Ottawa. 

 A bed of ochre occurs likewise in Durham, and elsewhere, in the 

 Eastern Townships. These ochres are frequently, in places, of a 

 dark-brown or greenish-black colour, from intermixture with earthy 

 manganese ore. 



C. MANGANESE OXIDES. 



35. Manganite : Steel-grey, with brownish streak, and metallic 



