DEFECTS IN BUTTER 183 



is designed as a protective rather than a remedial measure- The expense of 

 applying the method is small, the supply of pure culture needs, under normal 

 conditions, to be renewed only about once a fortnight, and the outlay at the same 

 time ensures protection from unwelcome surprises. Even when the continuous 

 employment of the method is not decided upon, it should at least be practised 

 at such times as a change from dry to green fodder, or vice versd, is made, this 

 change often becoming very unpleasantly manifest, not only in the cream-pan, 

 but also in the cheese-room, as will be explained in chapter xxxi. 



The method is most extensively used in Denmark. From a report by FRTIS, 

 LUNDE, and STORCH (I.), it appears that whilst in 1891 only 4 per cent, of the 

 samples of butter exhibited at the butter shows (held annually in various parts 

 of the kingdom) had been prepared by the aid of pure cultures of acid generator, 

 the number had increased in 1894 to 84 per cent. This fact affords the best 

 recommendation of the method. 



