. Bulletin. Natural history; Natural history. Testing Codling Moth Sprays.—Top, Apparatus devised by Farrar and McGovran to secure uniform deposit of spray on apples. At tlie left is sliown a 110-volt, 60-cycle (1800 rpm'l one-sixth horsepower stir motor with reduction gear. The stir rod buffers against a No. 13 rubbci stopper supported between two roller-skate wheels as bearings. On the lower end of the shaft carrying the stopper is a heavy-walled rubber tube extension that buffers against the rim of an auto wheel covered with friction tape to reduce slipping. The wheel is part of a whirligig
. Bulletin. Natural history; Natural history. Testing Codling Moth Sprays.—Top, Apparatus devised by Farrar and McGovran to secure uniform deposit of spray on apples. At tlie left is sliown a 110-volt, 60-cycle (1800 rpm'l one-sixth horsepower stir motor with reduction gear. The stir rod buffers against a No. 13 rubbci stopper supported between two roller-skate wheels as bearings. On the lower end of the shaft carrying the stopper is a heavy-walled rubber tube extension that buffers against the rim of an auto wheel covered with friction tape to reduce slipping. The wheel is part of a whirligig that rotates a group of six experimental apples while revolving each apple separately. Moving at 8 rpm, the wheel turns six skate wheels, supporting an apple apiece, at 27 rpm against a fixed 6-inch buffer wheel. At right is a sprayer constructed for use with compressed air, spraying with 25 pounds pressure. The spray mixture in the jar is stirred by an agitator driven by a compressed- air turbine. Bottom, Rack of test apples used in laboratory tests of codling moth Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Illinois. Natural History Survey Division. Urbana, State of Illinois, Dept. of Registration and Education, Natural History Survey Division
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Keywords: ., booka, bookcentury1900, bookdecade1910, booksubjectnaturalhistory
