60 Mr. E. H. Griffiths on the Influence of 



Dent's chronometer, but as the greatest gain in rate observed 

 was less than 1 in 12,000, no correction was necessary. 



I find it impossible to give a detailed record of the obser- 

 vations, as it would fill a volume. I therefore propose to give 

 an example in full of one of the experiments by drawing at 

 random one of the leaves from the mass of records. 



Table I. 



Aniline Exp. No. 26 : 4 cells. July 28th. 



Cooled to reading 06 cm. b.w. Temp, of b.w. = 67°*5 F. 

 Temp. Clark Cells = 15°-27 C. throughout. 



Experiment commenced at 1-17-30. 



Bridge-wire 



reading in 



centime. 



Time by 

 chrono- 

 graph. 



Number of 

 revolutions. 



Time. 



Time per 

 1000 revo- 

 lutions. 



Temp, by 

 thermo- 

 meter A. 





sees. 





sees. 



sees. 



millim. 



54-5 



3314 









166-53 



550 



3477 







3481 







55-5 



366-9 











56-0 



384-4 











56-5 



Mean 



61-5 



403 4 



1000 



552-6 



204-5 



166-55 

 166 58 



366-8 



582-5 



62-0 



600-5 











62-5 



6194 











63-0 



6381 







204-6 





635 

 Mean 



68-0 



656 



2000 



757-2 





166-60 



166-61 



6193 



819-9 



68-5 



838-5 











69-0 



856-2 







2042 





695 



874-9 











700 



Mean 



750 



892-6 



3000 



961-4 



2053 



166-60 

 16660 



856-4 



1079 6 



756 



1098-7 











76-0 



11183 











76-5 



1137-4 











77 



Mean , . , 



1156-2 



4000 



1166-7 





166-59 



1118-0 





Mean reading of thermometer A = 166'5S millim. = 16 0- 459C 



