Effect caused hy Incident and Emergent Light. 859 

 Silver. 



BJk. 



BJA. 



BJB 2 . 



Log B 2 /A proportional 

 to thickness of film. 



1-18 



1-20 



•985 



•079 



1-S5 



1-33 



101 



•124 



T42 



1-41 



1-00 



•149 



1-64 



1-66 



•987 



•220 



1-62 



108 



•961 



•225 



Tin. 



B./A. 



B.JA. 



BJB r 



Log B 2 /A proportional 

 to thickness of film. 



1-264- 



1-16 



109 



•064 



130 



1-20 



1-08 



•079 



135 



1-21 



1-11 



•083 



131 



1-20 



1-09 



•079 



1-37 



1-29 



106 



•J 10 



1-57 



1'434- 



1-09 



•157 



1-65 



1-484- 



I'll 



•171 



1-71 



1-56 



1-09 



•193 



1-74 



1-57 



111 



•196 



1-80 



1-68 



1-07 



•225 



190 



1-674- 



1-13 



•225 



1-87 



1-684- 



111 



•227 



1-81 



173 



1-05 



•238 



1-79 



1-82 



•9S4 



•260 



Lead. 



B x /A. 



B 2 /A. 



B./B,. 



Log B a /A proportional 

 to thickness of film. 



1-12 



107 



104 



•029 



1-23 



112 



1-10 



•049 



119 



1-144- 



1-04 



•057 



1-32-1- 



1-24 



1-07 



•093 



1-38 



1-25 



110 



•097 



1-50 



1-51 



•995 



•179 



1-53 



1-69 



•905 



•228 



