488 M. Hermann Herwig on the Independence of Temperature 



At the same time the initial temperatures T taken were not 

 lower than about 40°, because the determinations always become 

 less sure with too little difference between m and t'. 



Table I. 



The volume of the tube at 0° obtained with this filling was 

 62*2881 cubic centims. 











T-t' 



Experiment. 



T. 



t'. 



m. 



m—t' 



1. 



3915 



13 



15-05 



12 76 



2. 



5235 



13-2 



1614 



13-32 



3. 



7265 



14-4 



18-93 



12-86 



4. 



92-95 



15-25 



21-27 



12-91 



5. 



111-6 



15-45 



2307 



1263 



6. 



13905 



16-3 



2605 



12-59 



7. 



174-7 



15-55 



27-88 



12-91 



Table II. 

 The volume of the tube at 0° found, 62*2879 cubic centims. 



Experiment. 



T. 



t'. 



m. 



T-t' 

 m-t' 



8. 



38-65 



15 3 



16-99 



13-81 



9. 



51-75 



15-2 



17-83 



13-89 



10. 



87-95 



153 



20-46 



14-08 



11. 



110-2 



15-6 



22-7 



1332 



12. 



135 15 



1605 



25-27 



12 92 



13. 



16103 



16-3 



27-48 



12-95 



14. 



178-9 



16-5 



2891 



13 08 



Table III. 

 The volume of the tube at 0° found, 62*2895 cubic centims. 



Experiment. 



T. 



t'. 



m. 



T-f 



m — t' 



15. 

 16. 

 17. 



41-25 

 7105 

 1026 



15-55 

 15-7 

 16 2 



17-52 

 19-84 

 22-7 



1304 

 13-37 

 1329 



The values contained in the last column of these Tables show 

 that the measurements are, perhaps, not sufficient for the solu- 

 tion of the question raised. In the case of the universal validity 

 of Wiedemann and Franz's law these values must increase con- 

 siderably with the initial temperatures T ; in that of the validity 

 of Lorenz's law, they must remain constant for all temperatures T. 



Now, certainly nothing of an increase of the values is to be 



