383 On Metallic Minerals. 



Judging from surface specimens, the rock with which the 

 iron ore is associated is a friable white marble, containing, 

 like much of the ore, small particles of plumbago or 

 graphite. 



Wood for making charcoal and limestome as a flux, 

 abound in the neighbourhood ; and a water power to 

 almost any extent may be commanded. The ore is often 

 strongly magnetic. 



The substance of the foregoing communication was 

 sent to me, at my request, by Mr. Burrows, the overseer of 

 ■works on the Kideau, who has been before mentioned. 



It is very probable that the graphite mixed with the ore 

 may prove an advantage in its reduction, by causing a 

 saving in the expenditure of fuel, and also by exerting a 

 beneficial influence upon the cast metal. 



NOTE 4. 



Iron sand often exerts a strong cementing power on the 

 shores of the St. Maurice, &c., there are banks of sand so 

 indurated by its presence as to resemble sandstone. 



I have often observed, as probably others have also, that 

 rivers which bring down this metallic sand deposit it in 

 narrow low ridges upon the shore at higher elevations than 

 similar deposits of the lighter sand, a fact at first not easily 

 explained; upon more particularly observing what takes 

 place, however, it will be perceived that these ridges are 

 deposited upon the return of the ripple to its bed, conse- 

 quently that sand of greatest spacifie gravity falling first 

 will hold the highest position. 



