DURINGthe past several years the production of antibiotics has been one of the prime reasons for an amazing growth of the pharmaceutical industry. Penicillin was the forerunner of this new group of pharmaceuticals, but it was soon followed by streptomycin and such newer antibiotics as aureomycin, chloramphenicol, terramycin, and bacitracin. The tremendous increase in the production rates of penicillin and streptomycin in this country is shown by Table I. The newer antibiotics in most cases are produced primarily by one manufacturer, and for this reason individual production rates are not available.Bacillus subtilis and related bacteria of the Gram-positive spore-July 1951 INDUSTRIAL AND ENGINEERING CHEMISTRY 1489Eagle and his cowoi'kers {5-7). Meleney and Johnson {10) published a paper describing the first one hundred cases of surgical infections treated topically with bacitracin.CHEMICAL AND PHYSICAL PROPERTIES OF BACITRACIN
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