18 Analysis of Iron Ores, &c. 



son to think that chrome and phosphoric acid are constantly 

 found in it. 



Reflecting that oxide of manganese, chrome, and mag- 

 nesia, which he had just obtained, were found likewise in 

 aerolites, or meteoric stones, he questioned whether it were 

 not possible for iron ores to have contributed in some way 

 or other to the formation of these stones. This idea led him 

 to examine, whether nickel likewise did not occur in bog 

 ores ; but his researches were fruitless. 



From what has been said it follows, that the bog ore* 

 analysed were composed of, 1st, iron; 2d, manganese; 3d, 

 phosphoric acid; 4th, chrome; 5th, magnesia; 6th, silex; 

 7th, aluniine; and 8th, lime. The chrome, phosphoric acid, 

 and magnesia had not before been noticed in these ores. 



D 



IV. Examination of the Iron thai sublimes and collects in 

 the Chimneys of the refining Furnace. 



This iron is found adhering to the sides of the chimneys 

 of the refining furnace in the shape of stalactites, which are 

 sometimes more than a foot long and three or four inches in 

 diameter. They are formed of agglutinated grains, red in 

 their fracture, leaving great intervals between them, and 

 having but a slight action on the magnet. 



We shall omit the particulars of M. Vauquelin's analysis, 

 which he concludes with the following words : 



" In this sublimed iron, then, there are oxide of manga- 

 nese, silex, phosphoric acid, and above all a great deal of 

 chrome. These matters therefore have been volatilized by 

 the caloric, either by being dissolved in this fluid, or by 

 yielding to the impulse of the current of air; but in either 

 case they have issued from the pig iron during the process 

 of refining/' 



V. Examination of the Pig Iron of Dr ami on. 



Having found oxide of manganese, chrome, phosphoric 



acid, and earths, in the scoriae of the refining furnace, it 



was natural for M. Vauquelin to infer, that he should find 



the same substances in the pig iron ; since it is this that 



furnishes 



