248 



The Coagulation of Protein by Sunlight. 



acid or excess water. If the precipitate is formed slowly, it is only dispersed 

 by alkali. 



Certain substances act as accelerators for the reaction, such as alcohol, 

 acetone, (NH^SO-t, JSTaCl, KSCK The mechanism of the reaction is 

 discussed. 



In conclusion, I wish to take this opportunity of expressing my thanks to 

 Prof. F. G. Hopkins for much kind criticism and encouragement. 



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