258 Mr. H. Tomlinson on raising Iron under Temporary 



site directions as regards their effects on the physical properties 

 of matter. I was moreover led to test, not only the effects of 

 torsional stress and strain, but also those of other mechanical 

 stresses and strains, for the most part with arrangements 

 which will now be described. 



Fig. 1. 



Battery of 

 30 Grove's cells 



SIZE 



Galvanometer 



■"• Galvanometer 



The wire was suspended vertically in the axis of a glass 

 tube, A (fig. 1), being clamped at its upper extremity into a 



