1924 ENTOMOLOGICAL SOCIETY 55 



fifty-mile strip from the Canadian border to Long Island Sound. If the work 

 can be continued in that section and Canada sees fit to join in the proposition, 

 I think a barrier zone can be established. 



The present line, as mentioned, is surely the shortest line on which this 

 problem can ever be attempted in the United States. 



Mr. McLaine: I should like to ask Dr. Burgess to give us some informa- 

 tion as to the success of the extermination work in New Jersey; the total number 

 of egg clusters found in the first year of the infestation and the number found 

 each year since the extermination work was started. 



Mr. Burgess: I do not recall the number of egg clusters reported the 

 first year the gipsy moth was found in New Jersey. The information came 

 early in July and it was necessary to have some data about the first of August 

 as to how much money would be necessary to carry on the work. Very rough 

 scouting work was done and it was found that the insect had spread over 100 

 square miles and the estimates for carrying on the work were based on 100 

 square miles — $100,000 from. New Jersey; $100,000 from the Federal Govern- 

 ment. After the money had become available in the fall, work was carried on 

 and by the following spring it was determined that the infested area had been 

 greatly underestimated. Four hundred square miles were found to be infested. 

 The New Jersey funds were increased to $125,000 and the Federal funds 

 increased also. We have been carrying work on in New Jersey since that time — 

 400 square mile proposition on a 100 square mile financing, and the second year 

 the area was practically the same as the first year. The area now so far as 

 determined by last spring's work is approximately 200 square miles, a marked 

 decrease. 



Mr. McLaine: What was the actual amount of funds expended to bring 

 about this result? 



Mr. Burgess: New Jersey — first year, $100,000; second year, $125,000; 

 third year, $125,000. Federal Government — first year, $122,495; second year, 

 $101,672; third year, $167,207. The work in New Jersey has been extremely 

 encouraging and I think anyone who has visited the work is very much encour- 

 aged at the progress that has been made. 



Mr. Keenan: What is the distance between the Alburg infestation and 

 the one nearest to it? 



Mr. Burgess: About thirty-five miles. 



Dr. Swaine: I went over the New Jersey outbreak last spring with Dr. 

 Headlee and it certainly is surprising how successful the work has been. Almost 

 unbelievable that such excellent results could be obtained. 



Mr. Keenan: When an infestation such as Alburg is discovered, do you 

 adopt a policy of recording the wind direction from the viewpoint of larval 

 spread? 



Mr. Burgess: This matter will be studied, but, of course, it will be 

 necessary to study the wind records from the nearest point where accurate 

 records are kept. A great many of the local weather stations only take tem- 

 peratures twice a day and the wind velocity is not recorded. 



Mr. Finnamore: What time of the year would it be advisable to scout? 



Mr. Burgess: Scouting ought to be done immediately. Scouting is 

 most effective after the leaves have fallen and from then until you get deep 

 snow. When you get deep snow you are apt to overlook infestations below 

 snow-line. The most effective time for scouting is right now. 



