SYSTEMATICALLY SELECTED YEASTS^, 



is provided with two 

 cocks O and S for 

 the admission and 

 outlet of the steam. 

 M is a tube in the 

 form of a ring, and 

 provided with small 

 holes through which 

 cold water is passed 

 for cooling the wort, 

 the water passing out 

 through N. The cy- 

 linder B has its own 

 stirring apparatus I * 

 worked by toothed 

 wheels, and is also 

 provided with a gauge 

 L consisting of a float, 

 and an arc and pointer. 

 (In adjusting this, 

 care must be taken on 

 the one hand that the 

 packing is sufficiently 

 tight to prevent any 

 liquid from coming 

 through, and on the 

 other hand, that the 

 pointer can turn with 

 sufficient freedom.) 

 From the top passes 

 the bent tube K. At 

 the bottom is a cock 

 Q in connection with 

 the pipe b, the latter 

 being also provided 



FIG. 14. 



