1894.] and Steel and the Effect of Straining and Annealing. 170 



FIG. 2. 



20- 



JO- 



FIG. 3. 



20- 



10- 



M/LD STEEL 



INCHES. 



increase of extension at b, and the Committee gave to that point the 

 name yielding point. It appeared from their experiments that there 

 was a yield point also in compression, though hardly so well marked 

 as in tension. Since these experiments, autographic apparatus has 

 been used for describing the load-strain curve during a test. The 

 autographic load- strain curves exhibit the yield point in the case of 

 certain materials in a very striking way. 



2 



