FERMENTATION 



579 



on each plate, and thence through the overflow pipes back to the boiler. 

 The vapours of high boiling point are condensed in the U-pipes h in the 

 condenser/, passing back to the still by the pipes g. A coil, i, is shown in the 

 tank, j, where the spirit is cooled. 



FIG. 358 



Coffey Continuous Still The coffey still, Fig. 358, consists of two parts, 

 the analyser A , and the rectifier R ; either column is built up of rectangular 

 wooden frames resting one on top of the other, and the whole kept in position 

 by a number of vertical stay rods. The analyser is divided into a number of 



