MICHIGAN WEEDS. 287 



ratus is the compressed air type of hand spraying machine, keeping up 

 a fine spray under high pressure, using two-pounds of iron sulfate 

 for each gallon of water, or a weaker solution, one and one-third to one 

 gallon of water. Do not spray until two or three days after cutting 

 and then wait two or three days before cutting again. Spray on bright 

 days. As seeds are blowing about a total and permanent eradication 

 cannot be expected. 



"Spraying has destroyed the following weeds; False-flax, worm-seed 

 mustard, tumbling mustard, common mustard, shepherd's purse, pepper- 

 grass, ball-mustard, corn cockle, chickweed, dandelion, Canada thistle, 

 bindweed, plantain, rough pigweed, rag-weed, cocklebur. 



"The writer wishes to emphasize two points: After killing most of 

 the dandelions, do not neglect to add seeds of June grass and keep 

 fertilizing the lawn, as dandelions seldom do harm where the grass is 

 thick." 



