Effect of the Spectrum on the Haloid Salts of Silver. 265 



Table XIII. 



AgCl dyed with Erythrosin. (Gelatine plate.) See Fig. 11. 



Scale 

 number. 



Mean 





Relative 



Reduced 

 to maxi- 

 mum 

 of 100. 



Ordinate 

 of curve 



Scale. 



sector 

 reading. 



Opacity. 



sensitive- 

 ness. 



to wave- 

 length 

 scale. 



Exposure. 



Sector 

 reading. 















mins. sees. 





1 



250 



0-2 



6 



0-4 



0-5 





22 



2 



240 



0*45 



16 



1 



1 



5 



93 



3 



232 



0*8 



24 



2 



2 



4 



27* 



4 



208 



1-4 



48 



3 



35 



3 



57 



5 



192 



2 



64 



4-3 



4-5 



1 



83 



6 



176 



3 



80 



6-4 



7 



1 o 



108 



7 



220 



1 



36 



2-2 



2-4 



i o 



132 



8 



245 



0-25 



11 



05 



0-4 



i o 



150 



9 



256 



















5 



176 



11 



256 



















3 





HI 



192 



2 



64 



4-3 



4-5 







12 



160 



45 



96 



10 



10 







12* 



128 



8 



28 



27 



17 







13 



84 



30 



72 



65-1 



65 







13| 



66 



46 



90 



100 



100 







14 



99 



20 



157 



43 -4 



43 







14* 



192 



2 



64 



4-3 



4 







14* 



220 



1 



36 



2-2 

 • 



2 







