the Black Spot in Liquid Films. 51 1 



Table II. 1 : 70 Oleate of Soda Solution ; sealed 24 hours. 



I 









6 



| 





Age of Films. 



'o 



03 u'l 



8 S 

 £ S 



It 



T 3 O 



93 C 



ci S 



<B 











0> 



So 



So 



CD 



O 



S- 

 o3 



-d 







hours. 



mins. 











£ 



H Jh 



p 



H 



O 











53 



33-4 



200 



22-4 



h l 







3 





53 



20-0 



1-20 



21-8 









16 





53 



18-4 



110 



21-0 



ti 







40 





53 



18 4 



110 



21-0 



}f 







68 





52 



170 



1-00 



214 









92 





51 



15-7 



•10 



21-0 



)> 







111 





51 



157 



•90 



20-4 



); 







412 





37 



15-5 



•65 



22-0 









435 



'.'.'. 



37 



155 



•65 



21-6 



" 







455 



... 



37 



15-5 



•65 



21-0 









455 





war 



med 













455 



3 



37 



14-3 



•60 



22*2 



j 









6 



37 



120 



•50 



22;8 



7'> 2 











7 



war 



med 







3ft, 











8 



37 



6-7 



■28 



22 V 8 



& 2 











9 



37 



60 



•25 



23-0 













16 



36 



6-1 



•25 



231 



u 











24 



36 



7-3 



•30 



22-8 













40 



36 



8-6 



•35 



226 









456 



5 



35 



f 8-8 

 \ 12-6 



•35 | 

 •50/ 



22 











25 



35 



126 



•c0 



21 



Ab 2 







457 



25 



31 



14-2 



•50 



21 



b\ 







Table 111.-1:70 



leate of £ 



>oda So 



lution to 



which 







10 per cent, glycerii 



le was ad 



ded ; se 



aled 24 h 



ours. 







Age of Films. 







03 93 





B^ 



f^ 









U 05 



S S 



a> 



g Is 



CD 







hours. 



mins. 



% a 



IS 





.5 "^ 



s-, ed 



So 



cu w 



J3 











^ 



H r=i 



, fi 



EH 



O 











53 





! 



180 



&1 









"2 



53 



38-4 



2 : 3 



18-0 











10 



53 



40-0 



24 



185 











20 



53 



41-7 



2-5 



18-5 











55 



52 



39-0 



23 



19-0 









"i 



40 



52 



38-2 



2-25 



20-5 









3 



40 



52 



340 



2-00 



220 









5 



40 



51 



31-2 



1-80 



226 









7 



war 



51 



med 



28-6 



1-65 



23-8 



>> 









5 



51 



26-0 



1 : 50 



24-7 











9 



51 



22-5 



1-30 



25-3 











14 



51 



17-3 



1-00 



26-4 









... 



25 



51 



134 



•85 



28-4 











34 



51 



12-8 



•75 



31-0 











40 



50 



11-5 



•65 



32-0 











55 



50 



11-5 



•65 



33-4 









*8 



war 



med 

 46 



14*4 



•75 



320 



J) 









25 



38 



314 



1-35 



1 26-4 









10 



20 



30 



35-2 



1-20 



250 



: 





