92 SUGAR BEET SEED. 



very simple method, which is most practical and does 

 away with the movable cylinder, washing, etc., was 

 mtroduced. It consists in having a rod R fastened to 

 the rasping point; at end of the rod is a circular disk 

 D of the same diameter as the cone of revolving shaft. 

 When the cone is unscrewed it carries with it the rod 

 and disk, the pulp cylinder falling into a special cap- 

 sule, care being taken to leave behind the portion of 

 ]nilp near the disk, as it is the rema/ins of a previous 

 operation and has been pushed back by the new pulp 

 from the last beet from which a sample is taken. Expe- 

 rience shows that only four-fifths of the contents of 

 cylinder should be allowed to fall into the capsule; by 

 this means 3000 analyses may be made in twenty- 

 four hours. 



Certain practical precautionary measures are 

 essential. One must be careful to bring the mother 



() 



riG. 34. Detail ot rasp point. fig. 36. Wide neck flask. 



in contact with the revolving rasp very slowly; fur- 

 thermore, when the penetration through the beet is 

 nearly complete, the revolution of the rasp should be 

 lessened, otherwise there would be danger of bruising 

 the beet on the other side. Suitable brakes must be 

 used so as to stop the apparatus at once, as soon as 

 the belt is thrown on the loose pulley. When the 

 mothers are arranged on a table near at hand, the 

 sampling can commence. The rasp is put in motion 

 by moving the lever commanding the belting; as soon 

 as completed, that is, as soon as the sample is taken, 

 the reverse movement is given to the lever so as to 

 stop the general motion, while a special brake with 

 spring attachment stops the rasp instantly. If there 

 are two rasps on the same shaft, they must revolve 



