^•J.; SUGAR BEET SEED. 



stances other than sugar. The Keil and Dolle rasp is 

 used to obtain an average pulp from the sixty beets. 

 This pulp is collected in a special receptacle and thor- 

 oughly mixed; one-half of it is taken and submitted 

 to a pressure of 300 atmospheres, so as to extract the 

 juice. From one quarter of the half of the remaining 

 pulp 500 to 700 grams are taken, which are used as 

 final samples. 



The alcohol-digestion method is used to determine 

 the sugar percentage. For this purpose, the alcohol 

 used tests about 90 to 92 per cent; at least half an hour 

 is needed before it has penetrated the pulp. The 

 polariscope observations follow. A Brix hydrometer 

 gives the solids, and the apparent purity coefficient i- 

 obtained by dividing the sugar percentage by the total 

 solids; the non-sugar is the result of a subtraction of 

 the sugar percentage from the Brix indicator. A series 

 of tables is filled out for germination, the arrangement 

 bfeing as follows: 



The pen^ral classifioalion of varieties, according to their saccha- 

 rine quality, is dojie in a table about as follows; 



