β Scribed by C.
No coin nor oath required. For personal study only.
Crystal Violet as an Important Anti-Infective.--More than thirty years ago a Department of Agriculture scientist while seeking the cause of hog cholera, established the fact that it leaves the surviving animals immune, and later developed anti-hog-cholera serum. The scientist was DR. M. DORSET. He died last July, but he left as a monument to his persistent genius a new vaccine--crystal violet-which, it is believed, may be the most satisfactory product yet developed to fight hog cholera. A patent on crystal-violet vaccines-dedicated to the public welfare--has been applied for.
Dr. Dorset studied the diseases of many farm animals and developed many products for their control. But he was never fully content with his cholera serum. In recent years he and his staff sought, in particular, chemicals to mix with the deadly virus which would destroy the infective element and at the same time preserve the protective element that creates immunity to hog cholera. They experimented with various substances--phenol, glycerin, formalin and other chemicals. One of the last was crystal-violet, a water-soluble dye. Dr. Dorset's coworkers now announce that in their experiments with 200 pigs, crystal-violet vaccine has given about 99 per cent. protection against hog cholera.
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