DISEASES OF BUTTER. 257 



that dairying in our days is no more a single trade, but is 

 a very complicated industry, requiring intelligent workers, 

 not only fully familiar with the manipulations of the 

 dairy, but well grounded in their underlying principles. 



The fact alone that the raw material with which we 

 have to deal is so delicate and easily changed calls into 

 play one's highest efforts of cleanliness; there are so many 

 chances of harmful bacterial infection in the various 

 manipulations that thoughtfulness, good judgment, and 

 well-developed power of observation are essentials for any 

 dairyman. 



The demands made on farmers and dairymen as well as 

 all dealers in dairy goods for high-quality products have 

 greatly increased of late years; more of thorough knowl- 

 edge and intelligent understanding is required than ever 

 before; automatic work, no matter how faithfully per- 

 formed, is no longer in keeping with the greater demands. 

 The words spoken by Professor Segelcke more than ten 

 years ago are even truer to-day : In dairying the standard 

 is constantly being raised higher and higher. 



?38^ 



