by addressing Seed Laboratory, U. S. Department of Agri- 

 culture, Washington, D. C. When sending for them it is 

 also necessary to send $1.75 to Mackall Bros. 9th and H 

 Street, N. E., Washington, D. C., to pay for the trays and 

 vials used in packing the collection. 



The University of Nebraska has a free catalog of agri- 

 cultural samples of type seeds, grasses, etc., all nicely 

 mounted for sale. 



Samples of soil, local weed seed, and grains can be gath- 

 ered and stored for use in the early fall. The manual train- 

 ing department can make the trays for testing corn. 



