SILVER LOCATIONS OF THUNDER BAT. 223 



appearance, and there can be no doubt that large returns will eventually 

 reward the enterprise of the owners. It must be remembered however, 

 that in opening a mine of this character, it is impossible to force results. 

 Both time and money are required for the proper development of a 

 mine, before actual returns can be legitimately looked for ; and the 

 workings on the Thunder Bay Location were commenced little more than 

 a year ago.* 



6. Eastern Locations : — These comprise some fifteen or sixteen lots 

 lying to the north-east, east, and south-east of the Thunder Bay mine. 

 The greater number belong to the Kockland Silver Mining Company, 

 of which Mr. Dewe, of this city, is agent. Others are held by private 

 individuals. The ground throughout is at present altogether unde- 

 veloped, but outcrops of strong veins occur in various places, although 

 no actual discoveries of silver have as yet been announced. Two 

 parallel veins, running in a general east and west direction, are said to 

 have been traced upon the Rockland property. 



T. ^VoocVs Location : — This location, the property of the Montreal 

 Mining Company, lies just beyond the limits of Thunder Bay, but 

 being closely adjacent to Thunder Cape, it may be conveniently 

 referred to in the present communication. The presence of silver at 

 this spot was discovered last summer by an exploring party under the 

 charge of Mr. Thomas Macfarlane, formerly an officer of the Geological 

 Survey, but at present in the employment of the Montreal Mining Com- 

 pany. An elaborate paper on the geological structure and lithology 0£ 

 this locality, by Mr. Macfarlane, will be found in a recent number of 

 the Canadian Naturalist. The strata, here, belong to the higher divi- 

 sion of the Upper Copper-bearing series (§ 1). The vein, in which 

 the silver occurs, has only been recognized, at present, on a small rock 

 or islet, lying about a mile from the shore. According to Mr. Macfar- 

 lane, this, with some adjacent islets, appears to be the remains of a 

 large dyke intersecting the strata which originally occupied the space 

 between these now outlying rocks and the mainland. The vein strikes 

 N. 32° to 35° W., with an eastward dip of about 80°. Its width on 

 the north side of the islet is stated to be about twenty feet, and it sub- 

 divides towards the south into two branches, each of seven or eight feet 



* Since the above was in type, tlie following announcement has appeared in 

 the Toronto papers: " Colling wood, July 6. — The steamer Chicora, ivom. Lake 

 Superior, arrived this morning with sixteen packages of silver ore, valued at 

 $20,000, consigned by the Thunder Bay Mining Company." 



