APPENDIX III 



423 



Common Chickweed. Sand, dirt, chaff, foreign substances, and 

 seed not capable of germinating are considered as impurities, 

 and when present in quantity exceeding the standards of purity 

 and viability mentioned below, the name and approximate per- 

 centage must be indicated : 



Standard of Purity and Viability of Agricultural Seeds 



The United States Treasury Department periodically directs 

 Customs Officers that, for specified periods, two-ounce samples of 

 all importations of 100 pounds or more of grass, clover, and 

 forage-plant seeds shall be forwarded to the Seed Laboratory, 

 Department of Agriculture, Washington. The importation of 

 the consignment, and its entry into commerce, is suspended until 

 the result of the examination of the sample is made known. 



