358 Mr. F. C. Brown on the Kinetic Energy of 



Brown as described in the paper already referred to. Three 

 series of observations were taken with different strips of 

 platinum. The width of the platinum strip was least at the 

 middle, where it was hottest. 



One of the series of observations may be seen in Table IJL 



Table II. 



Electrometer Head- 

 ings (millims ). 



§■2 



-a, 3 



O 



•0001 



Time. 



•009 



•001 



•0085 



10 sec. 



20 sec. 



30 sec. 



10 sec. 

 20 sec. 

 30 sec. 



1 min. 

 l'o min, 



2 min. 



3 min. 



4 min. 



10 sec. 



Heating current : 

 Re- 



Direct 



28 

 30 



34 

 34 



37 



39-5 



39 



38 



40 



42 



26 

 34 



38 



47 



51-8 



55 



594 



602 



ersed 



27 

 28 

 30 



33 

 37 

 34 



40 



40 

 38 

 41 

 39 



27 



34 



38 



47 



51-8 



55 



59 



61-8 



20 sec. 



9 



» 



30 sec. 



12 



12 



1 min. 



18 



184 



1*5 min. 



226 



23 



2 min. 



261 



27 



3 min. 



311 



32 



4 min. 



35 



36 



Mean. 



28-. 



34-8 



396 



26-5 

 34 

 38 

 47 



51-8 

 55-0 

 59-2 

 61 



5 



9 

 12 

 18-2 

 22-8 

 26-5 

 31-5 

 85-5 









CO 





g 















M m 







O go 



-j u 



^n3 



£ "£ 



oS fi 





> o 





S~ o 



+3 H3 



-4-> </J 













I— I 



O -P'iJ -4-J 



•3 10 



4-8 



:6-5 



7-5 



4 



9 



4-8 



32 



4-2 



1-8 



4 

 3 

 62 



4-6 

 37 

 5 

 4 



10 



10 



10 

 10 

 30 

 30 

 30 

 60 

 60 



10 

 10 

 10 

 30 

 30 

 30 

 60 

 60 



242-8 



•5 10 i 57-7 



39-3 



227 



68-6 



34-3 



25-7 



13-7 



92 



6-3 



2-8 



429 



343 



280 



174 



135 



102 

 71-5 

 55-8 



■12! 



•274 



•320 



•120 

 •262 

 •314 

 •374 

 •430 

 •460 

 •497 

 •520 



•022 

 •061 

 •097 

 •130 

 •177 

 •210 

 •240 

 •286 



Resistance 6750 ; temperature 1293° absolute scale. 



