35 



Mr. Forbush gave further results obtained by the Massachusetts 

 Gypsy Moth Commission in the use of lime against the gypsy moth and 

 against the tent eateipillar, all indicating the value of lime. He also 

 described the method of clearing out umhirbrush as a means of starv- 

 ing out the larv;e. 



Mr. Howard said the starving-out plan was tlie one prin(^ii)ally relied 

 on in the work against the nun moth in Austria. Trees of considerable 

 size were banded with the insect lime to prevent the ascent of the larvic, 

 and all low-growing vegetation was then absolutely destroyed, and 

 the VdYYi^ perished for want of food. He further said that there are 

 certain species of plant-lice which descend the trunks of trees in autumn 

 and ascend again in spring, against which bands of lime could be used 

 to advantage. This would be i^articularly the case with the species 

 common upon the tulip tree. 



Mr. Lintner, referring to the difficulty of preparing a good emulsion, 

 suggested the advisability of someone's undertaking the preparation 

 of the emulsion as a merchantable article, to facilitate its use by the 

 general public, who were not sufficiently skilled or equipped to under- 

 take its home manufacture. 



Mr. Smith said that some patented insecticides very closely imitated 

 the kerosene emulsion, but were more expensive than their cost of man- 

 ufacture warranted -, but he agreed with Dr. Lintner as to the desira- 

 bility of having the standard emulsion on sale. 



Mr. Howard said that where an appropriation was available the 

 superintendent of parks might make the emulsion and distribute it free 

 of charge, as had been done in Kew Haven. 



Mr. Southwick read a paper entitled " A City Entomologist and 

 Insecticides." It related to the experiences, amusing and otherwise, 

 which had happened to the author during his term of office as Ento- 

 mologist of Kew York City, and was not designed for i)ublication. 



Mr. Davis presented a paj)er entitled '^Insects of the Season iu 

 Michigan."* 



The paper was discussed briefly by the following members: 



Mr. Smith, discussing the work of Scolytus, stated that they normally 

 attack weakened or unhealthy trees, and that a vigorous tree would 

 require very considerable work by Scolytus to seriously injure it. 



Mr. Lintner said he understood from Mr. Davis that the trees were 

 thus diseased and unhealthy. 



Mr. Davis replied that some of the trees were thrifty and others 

 lacked vigor. 



Mr. Rolfs referred to the great numbers of scolytids which followed the 

 disastrous frost of last winter in Florida, causing great alarm among 

 fruit growers. He said, however, that the trees attacked were such as 

 were greatly injured by the frost and wonhl ])robably have died any 



* This paper wns published in ])art in the Alh^gan (Jazotte during July. 



