On Metallic Minerals. 42l 



quantities, within that space, are not yet found. No rock 

 ore has yet been found in this part of the province." And 

 Mr. M. thinks it not likely that there will be. — (See addi- 

 tional note commencing' in the next page.) 



NOTE 16. 



In tlie township of Vongc, some years ago. an explosion 

 took place in a vein of iron pyrites, of which the following 

 is an account, from the pen of Dr. Bigsby : — 



" This explosion took place sixteen years ago (J809) in 

 Ihe township of Yonge, near the Lake of a Thousand Islands, 

 in the St. Lawrence. At the time, a man was seeking his 

 cow in the woods, within a short distance of the spot. On 

 a sudden he was startled by a tremendous explosion, 

 attended by volumes of smoke and sulphurous odours. — 

 Three yearssince,upoii being informed of these particulars, I 

 visited the place. It is half a mile within the woods, north of 

 the road from Brockville to Kingston, near the easternmost 

 of two creeks, and about ten miles from Brockville. I 

 found on the summit of a quurtzose mound from thirty to 

 forty feet high, a round cavity twelve feet deep, tAveive feet 

 long, and nine feet broad. Its sides consisted of very 

 shattered ijuartz, spotted brown by oxide of iron, and 

 covered |jrofu«ely with acicular yellow and white crystals 

 of sulphur. The lower parts of the cavity were studded 

 with masses of iron pyrites, of which there is a vein at the 

 bottom of the cavity. It is a foot and a half thick, and 

 di»sen)inates itself into the surrounding (juart«. Tliis vein 

 may be seen running east, with a very high dij), to the 

 dit.t:ince of a yard and a half." 



Similur phenomena have been tioticed in a mountain in 

 Vermont. — (See Silliman's Journal for February, IS'2\.) 



