l a h l e VI-Effecf of Collodion Used as a Pinishlnt Material >I%. roliodion Peimeability Thickness I,er too sq to mer keiativc of leather
isit,li wool. The niriorint of (IT?- rnatcrinl iisrd in earh coat.ing was measured by the \wight of the wet coat applied, determined hg noting t,he loss iii weight of thr bott.lp containing the finis11. 111one 11 aqueous solution of casein was used and ilr the other on of rdlodion in a mistitre of alrohol and ether. The T F Y l l l t S are shown in E'ignres 6 atid 7 niid i n Tables V and TI. w l i i d i tlwy ww drinl
'Tshlr V-Effect
~ i i d pdislieil
~
,,e*osity
Mm.
344
1.01
76 67
a88
1.15
215
1.18
32
.a7
41
45
39
28 12
1.20 1.27 1.18 1.15
I8 21
0 11
17
0
Per cent 77
lrxfher
of 1:a~einCsed as P Finishing Mafrrial
1.18
1.27 1.18
Directional Effects (1
0
5 6
77
ia
i c C' ?X
