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CASEIN. 



Berlin were painted in lime tempera by Professor Geselschap. 

 The medium, consisting of three parts by volume of fresh 

 casein and one part of lime, was prepared fresh every day 

 and ground along with the colours. 



It is now generally admitted that paintings executed in 

 casein colours will remain unaltered in tone for years and 

 effectually resist atmospheric influences. They also exhibit 

 extraordinary brightness, a fine velvety sheen, and clearness 

 in the shadows. In contrast to other processes, it is possible 

 with casein colours to paint the same surface over and over 

 again, the effect gaining in beauty and solidity with each 

 application. Finally, the paintings can be executed on any 

 solid ground, and are easily cleaned when they get dirty. 

 On account of these advantages casein painting is gaining 

 ground, and a number of casein preparations for this pur- 

 pose are on the market, though they cannot be discussed 

 within the limits of the present work. In this connection a 

 thoroughly scientific investigation of casein painting such 

 as has already been made in respect of oil and mineral paints 

 is, however, highly desirable. 



