91 



so happened that a sample of soft soap containing 50 per cent of 

 naphtha was sent me for triaL A single trial convinced me of its 

 merits, and 500 pounds were ordered. This soap readily dissolves 

 in cold water and takes up the kerosene very readily when pumped 

 through a bucket force pump. I found that the best proportion was 

 1 pound of the soap to 2^ gallons of kerosene. In the making of a 

 10 jier cent emulsion in this way I first dissolved 1 pound of the soap 

 in 2^ gallons of water. I then added 2^ gallons of oil and pumped 

 the whole through a bucket sprayer and added it to 20 gallons of 

 water. 



Towai'd the end of the spray work Professor Close, of the Dela- 

 ware station, visited me and told of the experiments which he had 

 just completed with the hvdrated-lime emulsion. I obtained some 

 of the hydrated lime at once, intending to give it a trial, but as the 

 season Avas then rather late and my landscape work took up my entire 

 time, I was unable to conduct the desired experiments. During the 

 coming spring I expect to spray extensively with the hydrated-lime 

 emulsion. 



I have endeavored to ascertain the experience of the other entomol- 

 ogists with Pulvinaria so as to compare results, but without exception 

 the reply has come, " I have had no experience with this particular 

 insect." My experience leads me to conclude that the Pulvinaria is 

 as liard to down as the San Jose scale. It also teaches that we can 

 not reason from analogy as to the remedies for insects. If we have 

 had no personal experience with an insect we really know nothing 

 about it, and we should be extremeW careful in making statements 

 recommending remedies. The comment of a resident of Rogers Park, 

 after the receipt of a letter reading "remedies are not necessary, as 

 the insects are rarely numerous,"' was, " He can't make me believe 

 that.'' I trust that no such letters will hereafter be written. 



Mr. Titus said that there had during the past few years been much 

 trouble from Pulvinaria in the Chicago city parks. He had visited 

 there frequently and had found employees using sponges saturated 

 with kerosene. These sponges were rapidly passed along the infested 

 limbs. Apparently the method was very efficient, so far as it reached 

 the scales. Those on the leaves were, of course, missed. 



AFTERNOOy SESSION, FRIDAY, DECEMBER 30, 190.',. 



The president called the meeting to order at 2 p. m. The com- 

 mittee on nominations reported as follows: 



For president, H. Giirmaii, Lexington, Ky. 



For vice-president, E. Dwigbt Sanderson, Durham. N. H. 



For second vice-president, F. L. Washburn, St. Anthony Park, Minn. 



