Gradation of a Developed Photographic Iraacfe. 315 



Table X. 



1 



Amyl- 

 acetate. 



Scale numbers. 



E 



D 



39-3 

 (A 5326) 



25 

 (A 4675) 



15 

 (A 4377) 



6-6 

 (A 4162) 



E 



D 



E 



D 



E 



D 



E 



■P 



1 



55 



1 



43 



1 



43 



1 



55 



1 



53 



2 



70 



2 



47 



2 



47 



2 



60 



2 



59 



3 



94 



3 



74 



3 



87 



3 



101 



3 



108 



4 



128 



4 



82 



4 



92 



4 



108 



4 



115 



5 



162 



5 



127 



5 



133 



5 



152 



5 



161 



6 



198 



6 



143 



6 



147 



6 



164 



6 



177 



7 



228 



7 



167 



7 



169 



7 



186 



7 



201 



8 



240 



8 



190 



8 



190 



8 



208 



8 



223 



9 



250 



















Table XL 



Amyl- 



acetate. 



Scale numbers. 



E 



D 



47-4 

 (X 5683) 



32 7 

 (A 4952) 



22-8 

 (A 4602) 



14-5 

 (A 4364) 



1 







E 



D 



E 



D 



E 



D 



E 





1 



3 

 4 

 5 

 6 

 7 



75 

 99 

 123 

 147 

 171 

 195 

 217 



i 



2 

 3 

 4 

 5 



6 



66 

 108 

 134 

 165 

 193 

 202 



1 



2 

 3 

 4 

 5 

 6 



45 

 61 

 83 

 110 

 135 

 143 



1 



2 

 3 

 4 

 5 

 6 



77 

 113 

 134 

 164 

 182 

 190 



1 

 2 

 3 

 4 

 5 

 6 



105 ; 



142 | 

 163 

 191 

 214 



223 ! 



j 



In the above tables, E is exposure and D is measured opacity in degrees of the 

 annulus. 



VOL. LXVII1 



Z 



