Experiments on two varieties of Iron. 



99 



TABLE I. 



Experiments on the tenacity of Ij'oji in specimen No. 1. 



The foregoing experiments confirm the evidence already ad- 

 duced, of the great toughness and ductihty of this variety of iron. 

 Besides the facts mentioned under the head of observations in the 

 seventh column, we may add that after the first fracture of each 

 bar a measurement was taken between two of the inch marks still 



