780 THE MONTHLY BULLETIN. 



At this stage of the experiments Mr. Geo. P. "Weldon, Deputy State 

 Commissioner of Horticulture, visited this locality and saw the results 

 of the experiments. He identified the spiders on the sticky paper. At 

 his suggestion the next tests were made even more carefully; the fly 

 paper was tacked to a large fruit-drying tray, which was nailed to a 

 step-ladder, the legs of which were placed in cans of water over which 

 oil was floated. This was done to prove beyond doubt that the spiders - 

 were blown on the paper and did not crawl there. 



On August 21st four sheets of the sticky paper were placed on the 

 tray, which was nailed to the insulated step ladder, sixty feet from 

 ])adly infested trees in another orchard, and in twenty-four hours about 

 fifteen spiders were counted on each sheet of paper. The final test was 

 made on the 27th of August. with the same apparatus placed 105 feet 

 from the infested orchard. Fourteen sheets of paper were used and 

 after 24 hours many mites were found on the paper. 



Mr. Weldon was here again at this time, and examined the appli- 

 ances and took the photographs which accompany this article. We 

 believe we have established the fact that red spiders are blown sufficient 

 distances by the wind to make an infested orchard a menace to orchards 

 within a reasonable distance. All of these tests were made at times 

 when the usual light summer south winds were blowing. The days 

 were usually calm and the winds blew at night. 



