193 



lamp directed upon the crucible at a considerable angle, practically no 

 iron is afterwards found in the platinum. It is probably because these 

 burners have not generally been used for this purpose that this phe- 

 nomenon has not been observed by others. It is clear that the Meeker 

 burner is not a satisfactory substitute for the blast lamp in making 

 fusions of clays or silicates that contain appreciable amounts of iron. 



13—11994 



