184 



Mr. H. E. Ives on the 

 Table I. (continued). 



X. 



Field 8°-6x5°-16. 



Field 4°-58. 



Field l°-86. 



Flicker. 



Eq. of B. 



Flicker. 



Eq. of B. 



Flicker. 



Eq. of B. 



Illumination 2-85 Units. 



•653 ii 



20-2 



14-2 



20-9 



17-5 



22-6 



232 



•643 



311 



25-1 



33-3 



29-2 



35-8 



35-6 



•632 



48-5 



43-7 



48-7 



44-9 



49-6 



484 



•622 



660 



532 



67-8 



54-8 



64-5 



65-2 



•612 



75-4 



65-2 



80-3 



68-9 



78-4 



77-5 



•594 



951 



78-1 



953 



81-5 



93-4 



95-0 



•574 



959 



85-9 



1000 



90-6 



959 



93-7 



•555 



76-6 



89-7 



78-2 



90-6 



78-8 



82-0 



•545 



66-8 



86'6 



661 



83-2 



71-3 



76-6 



•535 



54-3 



79-5 



54-0 



75-8 



57-5 



675 



•526 



39-2 



62 



37-5 



61-6 



45-9 



54-3 



•517 



27-9 



55-6 



25 6 



44-7 



28-0 



350 



•5075 





319 





26-0 







Table la. Data for Plates i.a. n.a, and m.a. 



The flicker luminosity curve for the 4^° field is reduced to 

 the value unity at '574/x at each illumination, and the other 

 data are given in terms of this. The data are corrected 

 for dispersion, but not for the energy distribution of the 

 source. 



\. 



Field 8°- 



6x5-16°. 



Field 4°-58. 



Field l°-86. 



Flicker. 



Eq. of B. 



Flicker. Eq. of B. 



Flicker. 



Eq. ofB. 



Illumination 270 Units. 



•655 fi 



140 



120 



13-4 



12-9 



13-1 



12-7 



•643 



24-6 





24-9 



22-8 



26-3 



24-9 



•632 



38-5 



38-8 



41-3 



38-8 



41-8 



401 



•622 



52-7 



55-0 



530 



50-4 



53-7 



51-8 



•612 



68-9 



64-8 



68-2 



62-7 



67-5 



65-7 



•594 



88-0 



85-2 



88-6 



90-2 



88-7 



92-5 



•574 



1004 



992 



100-0 



100-8 



98-5 



105-4 



•555 



93-7 



100-1 



91-8 



98-0 



911 



100-1 



•545 



83-0 



87-0 



82-7 



91-4 



81-8 



891 



•535 



70-2 



80-1 



715 



80-6 



72-5 



78-7 



•526 



52-9 



62-9 



55-4 



65-8 



53-5 



61-4 



•517 



38-0 



40-2 



35-6 



42-4 



35-4 



40-6 



