USES OF CASEIN IN THE TEXTILE INDUSTRY. 121 



hours with 7 parts of lukewarm water containing part of 

 strong ammonia. During this time the casein will have 

 swelled up thoroughly, and can then be diluted with another 

 7 parts of lukewarm water, and treated with an addition of 

 acetic acid until a precipitate is no longer visible. 



The chief rule in making this argentine preparation is 

 to have plenty of metal present, if the fabric is to exhibit a 

 silvery lustre when calendered, since it must be remembered 

 that this lustre is in nowise due to the medium, but solely 

 to the properly combined and finely divided metal, under the 

 influence of friction. 



When printing colours or dressings become thick on 

 standing, they must not be diluted with any preparation, 

 but should be warmed in a pan of hot water or on a water 

 bath. 



PRINTING COLOUR WITH METALLIC LUSTRE. 



According to German patent 78,731, a preparation for 

 producing on printed curtains, and the like, the same effect 

 as bronze powder, may be obtained by treating powdered 

 mica with an ammoniacal solution of casein and a dissolved 

 metallic salt, and colouring the whole with some vegetable 

 or aniline dye. 



PROCESS FOR SOFTENING, SIZING AND LOADING TEXTILE 

 FIBRES, AND FOR TREATING YARNS AND FABRICS. 



In the process introduced by S. Carmichael, a bath is 

 prepared by dissolving casein in oil. If used for yarns and 

 woven fabrics, the casein may be dissolved in a solution of 

 soap, and mixed with the necessary loading ingredients. For 

 example, the bath may consist of : 



Casein 16 parts. 



Soap 8 



Mineral or other oil 60 ,, 



Water 300 



Loading 200 



