tli«> wustoway frcim the lake, and in two or throe (jthcr places. His 

 notes upon the first experiment with tlie oil treatment are as foMows: 



At tlu- wasti'way, luar the lakt' <laiii, wliere the stream is approximately o feet 

 wiilf, oiie-tiiinl of a >j;alloii of j»hinotas oil was applied at 4 a. m., June 2'2. The 

 fftVct was at once iiotiirahle. At 2 p. in., the same day, most of the larva; wen- 

 dead, while the remainder were shi^'<risii. On the afternoon of the next day, the 

 conditions were carefully investijiateil and all the larva,' were found to be <lead, not 

 only where the oil was applied, hut for 10 feet or so ahead as well. 



The oil was applied by simply pouring it over a shingle, thus scattering it some- 

 wliat. It sinks and rises, and lingers long al)out the place. Stones in the water 

 picked up forty-eight hours after the application hadathin tilmof theoil still on them. 



AN'hon Mr. Conratli reported the results of hit? trip it .seemed to me 

 that tiie problem was in part at least solved, the chief perplexinof 

 feature bein*( the possible deleterious etiect upon fish life of the appli- 

 cation of the oil in quantity. From the similarity of the breedini^ 

 places he found to the one 1 had been observintj. it occurred to me 

 that a little work with stitf brooms in sweepino free the masses of 

 larva- and thiMi catchin^- them downstream on wire netting stretched 

 in the water might be helpful where the oil could not be applied. 

 Accordingly. 1 sent to Dixville Notch a barrel of phinotas oil and a 

 supply of stitl stiible brooms. When these arrived Mr. Conradi was 

 sent again with specific instructions as to the use of the brooms and 

 the application of the oil, especially in the latter case as to its etiect 

 upon tish life. He found that the sweeping method was entirely prac- 

 ticable and otiered in some breeding grounds a simple method of 

 destroving the pests. He also found that in a brook 8 feet wide where 

 in June the flies were breeding in vast quantities in which he had 

 poured one-half gallon of phinotas oil, the 3'oung stages of the flies had 

 been killed off for a distance of one-eighth of a mile from the jilace of 

 application. As regards flsh, he found that they swam rapidly down 

 stream as soon as oil was applied, and apparently were al)le to escape 

 without evil results to them. 



Shortly after the treatment tlie atlult l)lack flies became so scarce 

 that the hotel managers discarded the snuidges which for the last 

 twelve sunnners had been in daily use for the protection of the guest^. 



I believe that these experiments justify the hope that in the near 

 future the black fly will be more easily controlled in centers of perma- 

 nent or temporary population than is the mosquito. 



A vote of tlianks was extended to Doctor l-^letcher for the eflieient 

 and iniitartial manner in which he had ]>i-eside(l over the meeting. It 

 was vote«l that the meeting ad.iourn to nu*el at the sam<» lime and 

 l)laee with the American Association for tlie Advancement of Science 

 wlu'n it next assembles. 



Tlie meeting was then declared adjourned. 



A. V. IIIRGESS, iSecretary. 



