240 FUMIGATION METHODS 



nursery stock. The San Jose scale has only secured a 

 foothold in a few localities, and even there has been 

 confined to comparatively small areas. So far as is 

 known, there is no San Jose scale within several miles 

 of any of our nurseries. In one or two instances fumi- 

 gation has been required where the black peach aphis 

 has been found in a nursery, and under our present law 

 it will be possible to compel nurserymen to fumigate 

 their stock before it is sent out if the scale is found in 

 a nursery, or in such close proximity that there is a 

 possibility that the trees may be infested, even though 

 careful inspection fails to reveal its presence. In case 

 the scale continues to spread a move will be made to 

 secure a compulsory fumigating law that will apply to 

 all nurseries. At the present time it seems the cheapest 

 and most reliable method of treating nursery stock, as 

 well as for the destruction of many insects that are found 

 in buildings. Prof. L,. R. TAFT, Michigan Agricul- 

 tural College. 



Urges law in Mississippi. There has never been 

 anything done with hydrocyanic acid gas in this state. 

 We have no laws on fumigation of nursery stock, but 

 I have been urging laws, and think I shall present the 

 matter to the legislature. Prof. GLENN W. HERRICK, 

 Entomologist Mississippi Experiment Station. 



Successful mill fumigation in Missouri. Some nur- 

 series have erected a fumigating house and have fumi- 

 gated both the material entering and leaving the 

 nursery, but no one knows that it ever had the San 

 Jose scale in any case. Some greenhouses have also 

 been fumigated, and always with success, but of course 



