846 WEED FLORA OF IOWA 



Sorauer, P. Unkrauter. See Pflanzenkrankheiten 2 :894-904. 

 Spillman, W. J. Weeds in timothy and clover meadows. Cy. of 



Am. Agrie. 2 :447. 

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ox-eye daisy) Bot. Gaz. 10:214. 

 Thellung, A. Zwei kleine Beitrage zur Adventivflora Deutsch- 



land. AUg. bot. Ztsche. 15:89-90. 

 Thorne, 0. E. A pestiferous weed (wild lettuce). Bull. Ohio Agr. 



Exp. Sta. 44:141-146. 

 Thornton, R. W. The Khaki tjiush {Aplopa/p'pus sp.) another noxious 



weed. Agric. Jour. Cape of Good Hope. 30:76-78. 

 Tolf, R. Weeds on Swedish Moor plantations. Svenska Mosskultur 



for Tidskr. 17 :428-440. Abs. in Exp. Sta. Rec. 16 :61. 

 Tourlet, E. H. Catalogue des plantes vasculaires du departement 



d'Nidre-et-Lorre. 621. 1908. 

 Vasey, G. W. Weeds of agriculture. Rept. U. S. Dept. Agr. 



1886: 84-93. 

 Voelcker, J. A. Weed seed in fertilizer. See Jour. Roy. Agr. 



Soc. 63 :274. 

 Waddell, C. H. On some Irish hawkweeds. Irish Nat. 18 :149-150. 

 Waldron, C. B. The mustard family. BuU. N. D. Agr. Exp. Sta. 



16 :19. 



Troublesome weeds of the mustard family. Bull. 6:19. 

 White, P. J. Orange Hawkweed or Paint-brush. Cir. Cor. Agr. 



Exp. Sta. 9:10-12. 

 Whitson, A. R., et al. On weeds of the cranberry marshes. Ann. 



Rept. Wis. Agr. Exp. Sta. 1904: 233-237. 

 Wilson, James. Russian thistle. Bull. la. Agr. Exp. Sta. 26 :7. 

 WoUny, E. Untersuchungen iiber den Einfluss der Unkrauter auf 



das Wachstum der Kulturpflanzen. Forsch. auf Gebiete der 



Agrikulturphysik. 7 :342. 1884. 

 Wooten, E. 0. New Mexico weeds. Bull. N. M. Agr. Exp. Sta. 



13 :36. 

 The Russian thistle. Bull. 16 :20. 



ERADICATION OF WEEDS. 



Adams, G. E. Weeds; their eradication and control. Bull. R. I. 



Agr. Exp. Sta. 133:51-61. 

 Aderhold, R. An experiment on the eradication of weeds in 



meadows. Centrbl. Bakt. u. Par. 2 Abt. 7 :662. 1907. Abs. 



in Exp. Sta. Rec. 13 :658. 



