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Abstract of Experiments on Hcematite Steel. 

 The strength of these bars, owing to their flexibility, is inferior to the 

 strength of the other Bessemer steel bars before experimented npou. 

 Taking the average of all these latter bars, the mean value of C, the unit of 

 working strength, is 5-8 tons ; whereas this constant for the haematite bars is 

 only 4-2 tons, showing that the former are about ^ stronger than the latter. 

 M^'ith about 4 'more weight laid on the bars their power of restitution was 



