96 



Mr. T. G. Bedford on the Expansion of 



the corresponding values calculated from the formula ; the 

 full curves in the diagram are also drawn from the formula. 

 The straight line in the diagram represents the expansion as 

 given by Holborn and Wien's coefficient. 



Table III. 













Expan- 







No. 



Date. 



E, 



t. 



Lengths 

 in cm. 



sion per 



unit 

 length. 



' From 



formula. 





1. 



Mar. 13 



277-5 



14-1 



91-3728 



6xl0" 5 



5xl0~° 



/ 91-3673 (1) 







341-0 



77-4 



•3910 



_! 6 _ 



4 



; 27 



4 



E 263-073 

 E 100 363-358 



2. 



Mar. 17 



274-7 



11-4 



•3716 







5723 



318-8 



•4781 



120 



120 



I 91-3683 (2) 



7. 



Mar. 30 



1004-6 



824-2 



•7421 



392-5 



355 









9259 



7249 



•6744 



318-5 



304-5 









924-2 



7234 



•6716 



315-5 



303-5 



/ 91-3833 







703-6 



462-4 



•5519 



184-5 



181 









589-3 



336-5 



■5006 



128-5 



1275 



E 260-467 







5207 



263-0 



•4733 



985 



97-5 



E 100 361-788 







398-0 



136-4 



■4272 



48 



48-5 









303-5 



420 



•3957 



13-5 



14-5 





8. 



(Apr. 3 



277-0 



161 



■3860 



3 



5-5) 







Apr. 3 



1005-4 



827-5 



•7165 



372 



357 









898-2 



692-5 



•6381 



286 



288-5 









801-4 



576-3 



•5912 



235 



233 



l 91-3765 







675-1 



4315 



•5318 



170 



167-5 









561-7 



3073 



•4834 



117 



115 



E 260-875 







4543 



194-2 



•4413 



71 



70-5 



E 100 361-903 







360-7 



98-8 



•4084 



35 



35 









299-0 



37-3 



•3877 



12 



13 





9. 



Apr. 7 



996-4 



821-5 



•7036 



358 



354 









971-3 



789-2 



•6811 



333-5 



336-5 



l 91-3765 







897-1 



695-6 



•6336 



281-5 



290 









762-8 



534-3 



•5646 



206 



213-5 



E 261-8 







495 3 



237-7 



•4552 



86 



87-5 



E 100 362-115 







291-2 



29-0 



•3874 



12 



10 





10. 



Apr. 8 



1011-4 



839-5 



•7316 



379-5 



363 









957-4 



7700 



•6913 



335-5 



327 









920-2 



723-1 



•6633 



304-5 



303-5 



l 91-3848 







801-9 



579-3 



•6002 



235-5 



234-5 









681-8 



4409 



•5404 



170-5 



172 



E 261-847 







593-4 



342-5 



•5030 



129-5 



130 



E 100 362-306 







5026 



245-0 



•4678 



91 



90-5 









406-6 



145-1 



•4321 



52 



52 









315-6 



531 



•4023 



19 



18-5 





