SOME STUDIES ON THE GERMINATION OF THE SEED OF ORYZA SATIVA. 141 
Taste VII. 
Permeability of the cuticular layer of the seed — covering to the dyes. +: permeable; 
— : impermeable. 
Dye stuffs Cone. % Solvent nate : Oryza Zea | Hordeum 
steep 
Alkanine 2.0 (Chloroform -+alcohol (95%) 1 _ 
” ” > 5 _ 
Aniline blue 0.25 1/,oN Na OH 2 _ 
= = ” m1 ooN ” ” = 
Br z "I oooN ” ” = 
Bismarck brown 0.1 dist, water Ir — 
Bordeaux R 0.1 dist. water 1 — 
Coccinin 0.05 dist. water if _ = 
RS 0.05 _ = _ _ 
> = 50% methyl alcohol 2 _ - — 
Er 0.1 dist. water 1 — = 
” » a 2 — == == 
» „ 50% ethyl alcohol 56 _ — _ 
» 99 1% Phloroglucin 1 — er 
” ” 1% Hg Cl, ” a IP 
= 0.25 20% Na, CO, 2 _ 
ss Br ae Do OL an = 
” ” "100 N ”» » | ” | = 
” ” 1/,000N» ” | ” = 
x 0.1 Chloroform a = 
Congo red 0.005 dist. water 1 = = 
» 0.05 ” x _ = 
= 0.1 > er = = 
” > > 2 = = = 
5 cs 50% ethyl alcohol = = _ - 
” 0.05 50% methyl alcohol 55 = = = 
3 0.1 Phlorogluein 1 _ 
» = 1% HgCl, a = 
Cyanine 0.1 95% ethyl alcohol 2 _ 
” 0.05 4505 ethyl alcohol 3 = 
