Table 1. — IiJss and dyes tested and found to be unsatisfactory for use as primary marks — Continued 



Manufacturer and trade name 



Solray purple 



Tanus green B 



Thiof lavine S 



Toluidin blue 



Uranln 



Victoria blue B 



Victoria green 



K&K Laboratories, Inc., Jamaica, N.Y.: 



Pontamine fast pink 



Rivanal 



Thionine 



National Aniline, New York, N.Y.: 



Acrif lavin neutral NF 



Crystal violet 



DuPont dearmoior blue 



Indigo carmine 



Methylene blue chloride 



W. H. Curtin & Co., Houston, Tex.: 



Methyl violet 2-B 



Rose Bengal. 



INKS 



Bates Mfg. Co., Orange, N.J.: 



Purple 



Black 



Harshaw Chemical Co., Cleveland, Ohio: 

 Millioni blue 



Higgins India Ink Co., Brooklyn, N.Y.: 

 Purple 



Black 



National Cash Register Co., Dayton, Ohio: 



Volatile blue 



Volatile green 



Volatile purple 



1.0 



1.0 

 1.0 



1.0 

 1.0 



1.0 

 .5 



100.0 

 100.0 



1.0 



100.0 

 100.0 



100.0 

 100.0 

 100.0 



10 



10 

 10 



10 

 10 



10 

 10 



20 

 30 



10 



10 

 10 



10 

 10 

 10 



Remarks 



Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 



Faded within 1 week. 

 Do. 

 Do. 



Lethal within 



1 week. 

 Faded within 1 week. 

 Lethal within 



1 week. 

 Faded within 1 week. 

 Do. 



Do. 

 Do. 



Faded and/or lethal 

 within 1 week. 



Lethal within 1 

 week. 



Faded and/or lethal 

 within 1 week. 



Faded and/or lethal 

 within 1 week. 

 Do. 



Do. 

 Do. 

 Do. 



