IRON. 



and laying 1 it by for a week or two, till a 

 complete coat of rust is formed. A little 

 oil is then applied, and the surface, being- 

 rubbed dry, is polished by means of a hard 

 brush and a little bees-wax. 



The yellow spots, called iron moulds, 

 which are frequently occasioned by wash- 

 ing ink spots with soap, may in general 

 be removed by lemon juice, or the oxalic 

 or tartarous acids ; or by muriatic acid 



diluted with five or six parts of water, 

 but this must be washed ofFin a minute 

 or two. Ink spots may readily be remov- 

 ed by the same means. If the iron mould 

 have remained so long-, that the iron is 

 very highly ox'uled, so as to be insoluble 

 in the acid, a solution of an alkaline sul- 

 phuret may be applied, and, after this 

 has been well washed off, the acid will 

 remove the stain. 



ra**^ 



[U1U7BRSITY] 



OF VOL. VI. 



