Technical Chemistry. 121 
and finally into malleable iron. This led him to try the effect of the ac- 
tion of carbonate of soda alone on both malleable and cast iron—mal- 
leable iron thus treated, remained unchanged, while the soda salt extrac- 
ted the carbon and silicium from the cast iron, thereby converting it into 
The author hoped by this method to convert large masses of cast- 
heretofore could only be obtained 
at a red-heat. ect a 
Am. Jour. Sct.—Srconp Serres, Vou. XXXI, No. 91.—Jax., 1861. 
Pere wae ee 
