davis] REFERENCE FOR WEED STUDY L77 



Saltbushes, No. 108. 



Weeds Used in Medicine, No. 188. 



Alfalfa Seed. No. 194. 



The Lawn, No. 248. 



The Farmers Interest in Good Seed. No. 111. 



The Seed of Red Clover and Impurities, No. 260. 



Collections of Weed Seed. U. S. Department of Agri- 

 culture, Bureau of Plant Industry. One hundred kinds of seeds, 

 including common weed seeds. The seeds and work of prepar- 

 ation are furnished by the Bureau of Plant Industry, but it is 

 necessary for those desiring sets to supply tray and vials used. 

 These can he obtained at a cost of $1.50 from Messrs. MacKall 

 Bros., 9th and H streets, N. E., Washington, D. C, to whom 

 remittances should be made direct with request that material 

 be forwarded to office of this Bureau. At same time the Bureau 

 should be notified that such remittance has been made. 



Purdue University, Agricultural Extension Department. A 

 remittance of 35 cents is required to pay for cost of preparation 

 of set. 



North Dakota Agricultural College, Fargo, N. D. For par- 

 ticulars write to C. E. Nugent, Secretary of Agricultural College 

 (Fargo, N. D.). 



Ontario Agricultural College, Guelph, Canada. A charge 

 of 25 cents is made for postage and preparation. Address, 

 Botanical Department. 



