SELECTION AND SAMPLING OF SEED. 



169 



In the Bretfeld method of obtaining a sample, the 

 arrangement is very like that we have just described, 

 and is shown herewith (Fig. 51). It consists of a sheet- 

 iron disk, S, which fits inside an earthen receptacle, S'. 

 The seed is placed in 5" and falls through the opening, 

 0* When 5 is withdrawn there remains the geomet- 



FiG. 52. Divider paper. 



rical figure shown herewith. The operation should be 

 again repeated with a smaller appliance of same kind. 

 About 200 seeds are selected; these are placed on a 

 sheet of black paper, divided into squares or rec- 

 tangles; as each of these is divided in two, each half 

 will contain 100 seeds. 



•Some experts recommend that correspond to 5 grams in weight 

 of seed. The Austrian method can hardly be considered as exact as 

 the foregoing. It consists in spreading the sack sample upon a hlacJc 

 circle, from which are taken, with the horn spoon, segments of the 

 circle which represent the fiual samples. 



