EXPERIMENT STATION REPORT. 613 



larvcC and some recently set scales. The combined effect of the 

 two materials used was exactly equal to th^e single eft'ect secured 

 en No'. 15. 



July 13th. there were some larvae and some recent sets, as 

 well as a sprinkling of older scales — not enough to really demand 

 attention ; but I, nevertheless, sprayed with Roseleaf tobacco 

 extract, i pound in 5 gallons of water, chiefly to determine the 

 effect on foliage. July 29th, there had been no injury of any 

 kind to foliage, and there were few live scale insects in any 

 stage, a record which was duplicated August i8th, Septemter 

 15th and September 28th. September 5th, harvested nearly 

 two baskets of veT>' decent fruit. November 2d, the foliage w-as 

 about all gone; there was scale everywhere, but in small quan- 

 tity ; no larvie, but some recent sets which had collapsed. Plenty 

 of material for next year's crop, and not enough to' demand 

 treatment this winter. As a whole, this is a little inferior in 

 almost every respect to Nol 15. 



Trek 17 — TrcUiscd Peach. Set October 27th, 1903. A for- 

 eign tree that had gfown one season in a New Jersey nursery 

 and Ijccame scale infested. March loth, applied a thorough 

 covering of the "Universal Insecticide and Scale KiHer," after 

 first cutting back pretty well. Not until May 7th did the tree 

 sho'W signs of life, and not until the 17th did it really start from 

 the lower branches. May 27th, practically all the growth of 

 the pre\-ious }-ear and some of the older wood was dead ; but a 

 Aery fair growth was making from; the lower branches and 

 trunk. June i8th, sprayed with caustic soda at the rate of i 

 pound in 4 gallons of water, tO" test effects oii foliage. The 

 entire tree was covered toi the surface of the ground. Next 

 day the foliage was badly spotted and burnt, some of the tender 

 shoots were black spotted, and there was a generally dilapidated 

 appearance; but, on the whole, the injury was not so' great as 

 1 had expected it to be. Though no larv?e were seen, I never- 

 theless spraved the trunk and branches very carefully, to reach 

 any that might be ready, to crawl from beneath the parent scale. 

 June 27th the tree looked badl}\ Some of the ti]>s were curled ; 

 manv of the leaves were burnt and curled at the ends ; there 

 were crawling larv.T and recent sets, as well as older live scales 

 on the trunk. This examination indicated that the caustic soda 

 application at a strength sufficient to burn foliaee is not effective 

 as against the scale insects. The tree was left undisturbed dur- 

 ing the remainder of the growing season, but exaun'ned from 

 time to time, alwavs tc find a few larva? and recent sets, with 



