EXPERIMENT STATION BULLETINS. 



251 



following pages to describe Landling and management of starters by 

 the sterilizing or absolute method. 



The Sterilizer. — As sterilization is to replace pasteurization in this 

 process, a steam sterilizer is a necessary' piece of apparatus and Fig. 1 

 lias been inserted mainly to show the parts of a serviceable sterilizer. 

 A common copper wash boiler may be fitted up for sterilizing pur- 



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poses in much the same way, or a box constructed of wood or of gal- 

 vanized iron may be used. 



A more detailed explanation may prevent errors on the part of 

 those who set up sterilizers in their factories. The inlet, A, should 

 be placed near the bottom and of the proper size to fit a steam jet. 

 The siphon tube, B, for the removal of condensed water, alwajs has 

 its inner end covered, thus preventing loss of steam. The highest 

 point of the outlet should be lower than the opening C, so that steam 

 upon entering will not have to pass through water. For the supports 

 E, some light material should be used, as heavy metal or solid bodies 



