242 FUMIGATION METHODS 



fumigation to the nurseryman, as compared with the 

 cost to the grower, for spraying, etc., is very small. 

 Of course a system of fumigation will not do away 

 with the necessity of spraying in orchards, but it will 

 greatly decrease the loss that growers now sustain 

 from the attacks of various insects. Prof. FRANKLIN 

 SHERMAN, Jr., State Entomologist, North Carolina. 



North Dakota fumigated palms. Owing to the fact 

 that the number of fruit trees grown in this state is 

 very small, and that scale and other insedls have not 

 yet appeared, its use has not become general. I have 

 used the gas with very satisfactory results at this sta- 

 tion to kill the scale on palms. I have known of its 

 use with equally good results in the destruction of bed- 

 bugs in houses. C. B. WA^DRON, North Dakota 

 Agricultural College. 



New Jersey. Personally I have done so little with 

 the hydrocyanic acid gas that I do not consider my- 

 self entitled to any opinion as to its value, i.e., no 

 opinion formed as the results of original work. The 

 truth is, I never like to duplicate another man's work, 

 and as you have been doing the fumigation line most 

 thoroughly I was willing to accept your results, de- 

 voting my time to other lines of investigation. Dr. 

 JOHN B. SMITH, State Entomologist, New Jersey. 



New York. I have not had much experience in the 

 use of hydrocyanic acid gas on nursery stock, but from 

 what I have used and from what I know of it in other 

 respects, it seems to me to be one of the very best and 

 perhaps the only satisfactory method of treating young 

 trees for the purpose of killing insect pests upon them. 



