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Show What's New? A. V. Ladue of the University of California is the inventor of an instrument caUed an automobile stethecope with which any Ignition trouble may be readily located. An automatic burglar alarm for banks for firing a volley of blans cartridges to frighten robbers has been invented. Sound-proof boxes are used by a California woman in teaching canaries ca-naries to sing, making it possible to shut out all sounds excepting those the birds are being taught to imitate. Shest metal covered wi.il highly polished nickel is being used Instead In-stead of glass for mirroi-s. Chr.s. Gay who has a lion farm near Los Angeles, uses the radio to calm the beasts when they become be-come nervous and unruly. ' |