ON THE MECHANICAL PROPERTIES OF METALS. 



91 



Table II. — On the same Iron. Second Melting. 



The above bars have nearly the same appearance in their fractured sections 

 as those experimented upon in the last Table : the same uniformity in their 

 granulated structure was observable ; as also in the appearance and colour 

 of the crystals, which were nearly the same in every respect. 



Results reduced to those of bars I'OO in. square. 



Specific 

 gravity. 



Breaking 

 weight 



Ultimate 

 deflection 



Product b X 



d, or power 



of resisting 



impact, 



Experiment 1, bar 4 ft. 6 in. between 

 supports 



Experiment 2, bar 4 ft. 6 in. between 

 supports 



Experiment 3, bar 4 ft. 6 in. between 

 supports 



Mean 



6^970 



4431 

 374^7 

 508 



r48 

 1-19 

 r67 



655-7 

 4452 

 848-3 



6^970 



441^9 



1-446 



639 



