Lead poisoning in the smelting and refining of lead . 898 and 1899 and for1912, wliich made it possible to compare two dates 14 years records contain relatively few cases of plumbism, but many casesof indigestion and several of myalgia and lumbago. It seemed bestto follow the German and Austrian system and regard these as prob-ably less typical forms of chronic plumbism. EMPLOYEES ON PAY ROLL AND CASES OF PLUMBISM, MYALGIA, AND INDIGESTION,AS REPORTED BY A PHYSICIAN OF A WESTERN PLANT IN THE UNITED STATES,iS9S, 1899, AND 1912. Employees. Cases of— Year. Plumb-ism. Myalgia. Indiges-ti
Lead poisoning in the smelting and refining of lead . 898 and 1899 and for1912, wliich made it possible to compare two dates 14 years records contain relatively few cases of plumbism, but many casesof indigestion and several of myalgia and lumbago. It seemed bestto follow the German and Austrian system and regard these as prob-ably less typical forms of chronic plumbism. EMPLOYEES ON PAY ROLL AND CASES OF PLUMBISM, MYALGIA, AND INDIGESTION,AS REPORTED BY A PHYSICIAN OF A WESTERN PLANT IN THE UNITED STATES,iS9S, 1899, AND 1912. Employees. Cases of— Year. Plumb-ism. Myalgia. Indiges-tion. Total. H9S 800-850800-850500-550 747452 484793 174242197 296 IS!).) 363 11)12 342 In spite of this showing he insisted that lead poisoning is not socommon nor so severe as it was in 1898. In another western plant the records, which go back only to 1906,show no improvement at all. LEAD POISONIISTG IN SMELTIXG AND REFINING LEAD. 59 CASES OF LEAD POISONING IN A WESTERN PLANT IN THE UNITED STATES, ANDRATE PER 100 EMPLOYEES, BY YEARS, 1906 TO Employ-ees. Cases of leadpoisoning. Number. Rate per100 em-ployees. 550 65 550 95 .350-400 67 350-400 38 350-400 56 450-500 84 450-500 81 A record wliich covers 21 years is the following, wliicli was keptthroughout by the same physician: CASES OF LEAD POISONING, ACCORDING TO SEVERITY, IN A WESTERN PLANT OFTHE UNITED STATES, AND RATE PER 100 EMPLOYEES, FOR SPECIFIED YEARS, 1891TO 1912. Employ-ees. Cases of lead poisoning Rate per100 em-ployees. Year. Se-re. Moder- Mild. Total. 1891 1892 500 500500500500500-550630 8 ! 554 ? 491 17 19 - 1 i 21 20 1 588078775590134 121133979677110175 6 1895 19 4 1900 19 2 1905 15 4 1906 1912 At first sight this report does not show any improvement; ratherit shows that the lowest number of cases was reached in 1905, beforethe introduction of copper converters, and that since then there hasbeen a decided increase, but though the number of cases has risenthere
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