TwELB^TH Report of the State Entomologist 303 



I think it probable that the infestation of the greenhouses has come 

 from the piles of manure brought into them, as milHpeds are known 

 frequently to abound in manure, and are believed to breed in it. If on 

 examination they prove to be present in large numbers in the manure, 

 some efficient measure that may suggest itself should be taken for destroy- 

 ing them in it, and the manure should be removed to some distance 

 from the houses. 



The following thorough measures proved, as might be expected, an 

 effectual means of ridding the greenhouses of the pests. (See Garden 

 and Fores f, v, 1897, p. 348): 



In the spring we removed all plants from the greenhouses, also all 

 wooden benches, and everything but the bare brick walls and the glass 

 roofs. The floors had been concreted. We burned sulphur in liberal quanti- 

 ties three times a week for several weeks. Then we dusted all interiors 

 thoroughly with hellebore, and in the fall, just before replacing plants 

 in the houses, we coated all interiors with whitewash. Since then we 

 have not found a single one of these unpleasant pests. 



Kansas City. J. G. C. 



The above-mentioned treatment should exterminate almost any pest 

 to be found in a greenhouse. Such a fumigation might well be given 

 greenhouses that are empty or nearly so during the summer as a pre- 

 ventive to the undue abupdance of any injurious animal or plant form 

 the coming season. Then if a little care be exercised when the house is 

 filled in the autumn, not to introduce any pests, very little trouble 

 should be experienced in keeping the plants in a healthy growing 

 •condition. 



