l'T--' Wenrioh—A Study of th Time Interval in a 



ter was used. Into this tube a pipe-stem CD was projected to 

 the distance shown in the diagram. 



Fig. 1. 



SlT 



3? 1 A 



Two platinum wires were fused into a small cylindrical piece 

 of well-fused lead chromate E. The piece was - 5 cm long and 

 Q.^gcm j n (Ji ame ter. This was suspended from the end of the 

 pipe-stem with one wire coining through the stem to B and 

 fastened with furnace cement to the lower end of the stem. 

 The other wire was conducted out between the stem and the 

 tube to A. The latter wire was fastened to the outside of the 



