Ionization from Certain Hot Salts, 



245 



strip, as in the experiments with salts. This was tried by 

 placing some powdered MoS 2 at the centre of a Pt strip 

 previously glowed out at about 1100° C. The following- 

 readings were obtained : — 



Eemarks. 



M. 



T. 



w/H. 



MoS 2 on strip of Pt. B 



Fresh piece inserted. 



9350 



840° 



72-0 



10000 



755° 



41-9 

 41-7 



10200 



786° 



41-5 



10500 



833° 



42-35 



,, 



ji 



41-15 



» 



., 



411 



10000 



755° 



24-74 

 41-5 



850 



520° 



39-36 



870 



552° 



3204 



869 



552° 



38-68 



900 



600° 



74-4 



690 



695° 



48-5 



726 



772° 



40-35 



740 



802° 



40-8 



»> 



,, 



89-65 



745 



811° 



39-82 



750 



826° 



41-4 



760 



845° 



42-2 



770 



865° 



40-4 



773 



873° 



44-85 



783 



895° 



41-55 



800 



930° 



40-45 



750 



826° 



46-65 



860 



1060° 



40-8 



863 



1070° 



41-65 



872 



1090° 



40-25 



884 



1115° 



38-66 



900 



1150° 



46-9 



920 



1191° 



40-9 



It is known that molybdenum combines with platinum at 

 a high temperature, but. no evidence that chemical action 

 had taken place could be seen from the appearance of the 

 strip after the experiment. 



One notices that these values lie mainly around that for 

 K-impurity emission. There is this departure, however : in 

 all previous experiments when the K-emission was measured 

 the values ranged, if anything, lower than the apparently 



