526 



iireraents both at hydrogen- and helium-temperatures have not gone 

 beyond 12000 Gauss. Tliey will afterwards be further extended to 

 higher tield-strengths especially at hydrogen-temperatures. 



QoA^f' 



Fig. 2. 



Figs. 1 and 2 contain the results for tlie resistance of lead and 

 tin in a magnetic field. The difference between the longitudinal and 



ViClOO 



Fig. 3. 



transverse effects was not more than the eirors of the measurements. 

 The abscissa gives the ratio of the resistance to that at 0° C. 



noca 



Fig 4. 



