8 



The Bulletix. 



mixed tlioroughly, should be turned out on a sheet of "white paper on a ; 

 table or some firm surface, and in good light, before the actual examin- 

 ing is done. This precaution should be taken, as some seeds roll very i 

 easily and others are so small as to easily escape notice. 



After v. S. Dept. ofAi/r. 



Fig. 1. Inexpensive Magnifier 

 for examining seeds. 



An advantage in examining seed at home is that the time required to 

 send the seed to the laboratory and get a report is saved, which some- 

 times means that the entire lot from which the sample was taken has 

 been sold before the report is received. As the best protection the pur- 

 chaser has against poor seed is the ability to judge the quality of seed 

 for himself, it is hoped that the illustrations of seeds given in this 

 Bulletin will be helpful in aiding the farmers to determine the weed 

 seeds which are most likely to occur in the principal agricultural seeds, 

 and it is for this purpose that the illustrations are given. 



The results of the purity tests are arranged in the following tables : 



