Tatle 1. — Inks and dyes tested and found to be unsatisfactory for vise as primary marks 



Manufacturer and trade name 



Concentration 

 of dye 



Experimental 

 shrimp 



Remarks 



Dyes 



Arthur H. Thomas Co., Philadelphia, Pa. 



Fluorescelne 



Baltimore Biological, Baltimore, Mi.: 



Brom cresol purple 



Resazurln 



Fisher Scientific, New York, N.Y. : 

 Brom phenol blue 



French Food Co., Rochester, N.Y.: 



Blue liquid food colors 



Green liquid food colors 



Red liquid food colors 



Yellow liquid food colors 



Harleco, Philadelphia, Pa.: 



Acid alizarin blue 



Acid violet lOB 



Acridin orange 



Aniline blue 



Blue 2B 



Brilliant alizarin blue 



Brilliant blue FCF 



Brilliant milUng green 



Brilliant milling green B 



Brilliant violet 



Brom cresol green WS 



Brom cresol purple WS 



Brom cresol thymo blue WS 



CarmLn alum Mayer 



Clayton yellow 



Diamond blue 3-B 



Direct green B 



Erlochrome violet BA 



Fuchsln acid 



Hofman violet 



Jenner stain 



Light green SF 



Malachite green 



Meldola blue 



Naphthol 



Naphthol green B 



Neutral violet 



Phosphine 



Primullne 



Rhodamin B 



Rhodamin 6B 



Saf arlne 



Percent 



1.0 



1.0 

 1.0 



1.0 



100.0 

 100.0 

 100.0 

 100.0 



1.0 

 1.0 

 1.0 



1.0 

 1.0 

 1.0 

 1.0 

 1.0 



1.0 

 1.0 

 1.0 

 1.0 

 1.0 

 1.0 

 1.0 



1.0 

 1.0 

 1.0 

 1.0 



1.0 

 1.0 



1.0 



1.0 



1.0 



.5 



1.0 



Number 



10 



10 

 10 



10 



10 



10 



10 



5 



15 

 15 

 10 



10 

 15 

 10 

 10 

 10 



10 

 10 

 15 

 15 

 15 

 10 

 10 



10 

 15 

 15 

 10 



10 

 10 

 15 

 10 

 10 

 10 

 15 

 15 

 10 



10 

 10 

 10 

 10 



Faded within 1 week. 



Do. 

 Do. 



Do. 



Do. 

 Do. 

 Do. 

 Do. 



Do. 



Do. 

 Faded and/or lethal 



within 1 week. 

 Faded within 1 week. 



Do. 



Do. 



Do. 

 Faded and/or lethal 



within 1 week. 

 Faded within 1 week. 



Do. 



Do. 



Do. 



Do. 



Do. 

 Faded and/or lethal 



within 1 week. 

 Faded within 1 week. 



Do. 



Do. 

 Faded and/or lethal 



within 1 week. 

 Faded within 1 week. 



Do. 



Do. 



Do. 



Do. 



Do. 



Do. 



Do. 

 Faded and/or lethal 



within 1 week. 

 Lethal within 1 week. 

 Faded within 1 week. 



Do. 



Do. 



