CULTURE FOR SEED 69 



each variety is finished the separator is 

 thoroughly cleaned out and run empty for 

 a while so that no seed will be left in to 

 mix with the next variety to be threshed. 

 Stock seed is generally threshed by flail 

 in order to avoid all possible chance of 

 mixture. After this the seed is taken to 

 the cleaning house and put through a se- 

 ries of fans and screens to take out all 

 chaff and small and broken seeds. 



The raising of new varieties is very in- 

 teresting. All careful breeders work on 

 the Mendelian principle, and since the 

 realization of the importance of these laws, 

 there has been less unfixed stock put on 

 the market. The following is a brief 

 statement of the procedure for raising new 

 varieties. The flower to be pollinated 

 must be in a very young stage, generally 

 a bud before the color even begins to 

 show. As the sweet pea blossom sheds its 



