262 Capt. W. de W. Abney and Mr. G. S. Edwards. 



Table X. 



AgBr stained with Erythrosin. (Gelatine plate.) See Fig. 10. 



Scale 

 number. 



Mean 





Relative 



Reduced 

 to maxi- 

 mum 

 of 100. 



Ordinate 

 of curve 



Scale. 



sector 

 reading. 



Opacity. 



sensi- 

 tiveness. 



to wave- 

 length 

 scale. 



Exposure. 



Sector 

 reading. 



Bare 













sees. 





glass 



110 















4 



100 



10 



1 



1 



1 



120 



107-5 



5 



80 



30 



4 



4-4 



5 



100 



12 



6 



59 



51 



7-5 



8-5 



10 



90 



13 



7 



39 



71 



17 



19 



21 



80 



14-25 



8 



33 



77 



23 



26 



31 



60 



18 



9 



27 



83 



13 



14-3 



15 5 



50 



20-5 



10 



25 -5 



84-5 



37 



40-7 



43-5 



40 



24 



10| 



35 



75 



30 



33 



35 



30 



28 



11 



53 



57 



21 



23 



24*5 



20 



35 



11-1 



59 



51 



7-5 



8-5 



8-5 



15 



43 



12 



44 



66 



14 



154 



16 



10 



53 



m 



25 -5 



84-5 



37 



40-7 



42 



5 



69 



13 



15 



95 



74 



82 



83 







110 



13k 



13 



97 



19 



100 



100 







14 



35 



75 



21 



23 



23 







14| 



86 



24 



6 



6-6 



6 







15 



108 



2 



5 



0-5 



3 







