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Congo red 
Methyl orange§ 
Safranine*§ 
Eosin 
Fluorescein 
Coceinin 
Tropaeolin OO 
Haematein 
Cyanine$ 
Fuchsine§ 
Sudan IIT 
ISABURO NAGAI: 
Orange G.t 
Magdala red 
Induline 
Rose bengale 
Galein sice. 
Bordeaux R 
Tropaeolin OOO 
Nigrosine 
Orcein 
Methylene bluet 
Alkanine 
After the hulled grains are steeped in the dye solution for a certain 
length of time, they are pressed between clean blotting paper to remove the 
adhered solution, and the limit of penetration is examined under the miero- 
scope, by hand sections of single grains from each lot (usually five in each 
lot). 
The results are as follows: 
* by Overton (1900), § by Prerrer (1886), + by Runianp (1912), { by Hößer (1909). 
