Show 1 keeping t 0 up vi clen ci C e n er v e 0 Q science service service I 1 vineyard pests are lured to death by pale blue li light PACIFIC GROVE CALIF pale blue light beckoning through the darkness proves a fat allure to the grape leafhopper serious bestin vineyards it if was reported here before the meeting of the I 1 american society of agricultural engineers by J 1 K ellsworth of the university of california females of the species responded most readily to the deadly blue willo th ewis counts of large sample catches showed 88 per cent female insects which ot of course is an all to the good from the viticulturists standpoint females are the ones that produce new crops of leathor pers many light colors were experimented with before the tha attractiveness 0 of f pale blue was discovered other colors attract other insects the lights have also been used as an easy means for obtaining insects to feed to laboratory animals the lights lure the flying v victims when they arrive at their gleaming goal they fly against high tension wires that kill them instantly hens say thanks with eggs hens in poultry houses v ventilated entila ted and warmed by electricity say their thank w with ith eggs reported J C scott of the puget sound power and light company the problem faced by his company was to provide better working conditions for the hens kept in small individual cage nests in a large egg factory in the pacific northwest the solution was found 1 b by ys shutting hutting doors and windo windows w s an and c 1 blowing air in through a ten inch opening near the ceiling baffle plates were used to prevent drafts and electric heaters warmed the incoming air when frosty weather came I 1 the results mr scott stated were healthier more comfortable 11 fensand hen ens sand and of course more mor e eggs in winter when prices are best |