DEFECTS IN BUTTER. 239 



The advantages of this new method are so numerous, that its 

 employment should not be delayed until the maladies in question 

 appear ; in fact, the method 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 versa, 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 Funs, LUNDE, and S TORCH (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. 



