| Show properties Proper tiei of dyes dye the layman usually thinks of dyes as substances that have color this concept Is not quite correct says thomas al beek beck in the chicago tribune it Is essential that a dye have two other properties it must attach itself to the fabric to which it Is applied and it must stay there to a reasonable degree in spite of washl washing ng and exposure to weather it just happens that heretofore the lie only proper property ty that we desired to attach to fabrics was wag that of color there Is a certain coal tar dye long known to the textile industry as aa martins marthis yellow it had been observed that moths steered clear of woolen goods dyed with this particular dye unfortunately tuna tely no other worthwhile worth while dyes lye s could be found which possessed ills property |
