A. Amos and H. E. Woodman 34:9 



Table III. Condituenis of silage extract expressed as 

 percentages of moisture-free silage. 



of bag 1 i; 3 4 5 6 7 8 



* r'ak'ulatecl as acetic acid. 



f Calculated as lactic acid (see table given later under "Changes suffered by Ether 

 Extract"). 



.■f Calculated as crude protein. 



Comments on Tables II and III. The significance of the above data 

 will be dealt with fully in the general discussion of the results. At this 

 point, it is only desired to call attention to the following: 



1. In all the bags containing normal silage, the non- volatile acids 

 preponderated largely in amount over the volatile organic acids. 



'2. Where moulding of the silage occurred (as in bag 8), the volatile 

 and non-volatile organic acids were not simply neutralised by the basic 

 decomposition products of the jDrotein constituent, but were actually 

 destroyed. This is in agreement with the observations of Dox and 

 Neidig^ and the behaviour is further exemplified by the results of an 

 analysis carried out on a samjde of mouldy silage from the top of silo II: 



CO. N 



Volatile organic acids — 



Non-volatile organic acids 2ri-9 



Amino acids 1(1-7 



Volatile bases UiO 



In this case, all the volatile organic acids and most of the non-volatile 

 had disappeared as a result of mould activity. The meaning of the high 

 ratio of volatile bases to amino acids will be discussed later. 



3. The results for bag 3 silage are, as anticipated, quite normal, 

 although this bag was allowed to remain in the big silo some mouths 

 after the other bags had been removed. 



' Dox and Ncidig, iJcNcri/r/i BiiUeliii. No. 10, Iowa Experiment Station. 



