234 Index. 



Insects, harbored by weeds, 16. 



Iron sulphate, use in spraying, 156. • 



Kinghead, description of, 141; eradication of, 146. 



Lettuce, wild, 137. 



Live stock, factor in distribution, 43. 



Machinery for spraying", 159. 



Machines, thrashing, cleaning before use, 76; 

 distribution by,, 49. 



Manure, distribution by, 45; fermentation of. 111. 



Method, of cleaning farm, 98; of using spud, 105. 



Methods, adapted to conditions, 72; of eradica- 

 tion, general, 58. 



Modification of rotation, 71. 



Moisture, use of, by weeds, 14. 



Morning glory, wild, 206. 



Multiplication of weeds, 11. 



Mustard, eradication o^, 151; tumbling, 171; 

 wild, 161. 



Mustard family, weeds of, 149. 



Night-flowering catchfly, 216. 



Number of weed species, 9. 



Oat, wild, description of, 183; eradication of, 187. 



Ox-eye daisy, description of, 127; eradication or, 

 130. 



Packing material, distribution by, 46. 



Pastures, cost of eradication in, 123; use of an- 

 nual in eradication, 93. 



Pennycress, description of, 168. 



Peppergrass, eradication of, 151. 



Perennials, 66; creeping, 66. 



Pigeon grass, 191. 



Pigeon weed, 218. 



Plantain, description of, 202; eradication of. 205. 



Plant diseases, harbor for. 16. 



Plant food, use of by weed.s, 14. 



Prevalence of weeds, 7. 



Prevention of seeding, 91. 



Production, increase of cost of, 37; prevention of 

 seed, 91. 



