G. Williams 215 



protein hydrolysis with regard to these two acids are overcome by 

 Foreman's precipitation method. 



The content of vahne is unusually high, but not as high as that 

 found by Foreman in hnseed protein. 



The ammonia content is low which is in harmony with the low 

 content of dibasic acids. 



The most serious loss in the hydrolysis was caused by the large 

 mother hquor residue left by the phenylalanine (see page 197); this 

 amounts to about 8 per cent, of the protein. Another smaller loss 

 was caused by the substances containing amino nitrogen contained 

 in the proUne (see page 196) : this amounts to nearly 2 per cent. 



It may be suggested that the low content of glutaminic acid in the 

 soluble protein of swedes and the high content of that amino-acid in 

 the proteins of cereals make these two feeding stuffs suitable for feeding 

 together. 



Finally I wish to thank Professors T. B. Wood and F. G. Hopkins 

 for their kind interest throughout this work, and also Mr F. W. Foreman 

 for much valuable guidance. 



{Received August 23rd, 1916.) 



