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Timely Information From
The H. D. Agent** Office
Siltit Snst Effect*! ' Sound waves of rack high fro* quency that the human ear can* not hear thorn are being studied „ by many scientists today for such varied uses as cleaning machinery s and clothes, hilling insects, and" sterilising food.
Practical agricultural uses of ultrasonics are under investigation at the U.S. Department of Agriculture. Engineers and entomologists, working together in their first limited tots, found that ulinic
waves killed mosquito larvae in five seconds but that it took up to a full minute to ldH the larvae of the codling moth, that serious pest of apples and other deciduous fruits. However, if the worm is in the apple, the ultrasonic waves did net even dis• turb it.
In another study of possible ultrasonic control of fruit fly in citrus fruit) the scientists found .that exposure to the high-frequency waves decreased the vitamin C content of the orange 'juice- The longer the exposure, the less vitamin C remained. > Strengthened Syrept
An intensified natural maple flavor will be given to some of this spring's output of maple syrup as the result of a new process developed at the Department of Agriculture’? Eastern Regional Research Laboratory, Philadelphia, Pa. Dr. G. E. Hilbert, chief of the Bureau of Agricultural and Engineering Chemistry, believes the inexpensive ptoceee promises better maple products at lower cost and wider outlets for fine quality syrup.
Maple syrup is a truly American sweet because sugar maples , grow only in North America. It has been a breakfast favorite from earlier pioneei days. But in redeem years the cost of pure maple syrup has made it too much of a luxury for many families. Mapleayrup blends, which are about three-fourths cane-sugar .syrup, are considerably le« expensive and more widely used. The dark, strong maple syrup which goes into these blends contains some caramel and other non-maple flavors. The hest grades of maple syrup are too light in color and delicate in flavor to be suited to • blending, and are too expensive to sell widely.
Sheer Saggestimasi *
Sheer fabrics are in the spotlight for summer clothes, says Margaret Smith, clothing specialist of the U.S. Department of Agriculture. Miss Smith observes that yard goods counters ate offering -a greater variety of sheers than in many a year—in cotton, rayon, nylon and silk, with many old favorites to choose from, including dimity, dotted Swiss, organdie, chiffon, voile and tissue
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