. Dr. Evans' How to keep well; . ed themselves onthis point by shallow observation would fill a book. The above cited report gives figures for consumption among Englishworkers. Using farmers at 100 asthe base they report as follows: Ironstone miners, 133; carpen-ters, 148; coal miners, 166; cornmillers, 166; bakers and confection-ers, 177; blacksmiths, 177; lock-smiths, 194; wool workers, 202; tinworkers, 204; carpetbag makers, 213bricklayers, 215; ropemakers, 220coopers, 238; cotton spinners, 244lead workers, 247; brass workers, 250stone quarriers, 261; iron workers, 292; copper miners, 307;

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. Dr. Evans' How to keep well; . ed themselves onthis point by shallow observation would fill a book. The above cited report gives figures for consumption among Englishworkers. Using farmers at 100 asthe base they report as follows: Ironstone miners, 133; carpen-ters, 148; coal miners, 166; cornmillers, 166; bakers and confection-ers, 177; blacksmiths, 177; lock-smiths, 194; wool workers, 202; tinworkers, 204; carpetbag makers, 213bricklayers, 215; ropemakers, 220coopers, 238; cotton spinners, 244lead workers, 247; brass workers, 250stone quarriers, 261; iron workers, 292; copper miners, 307; copper workers,317; lead miners, 319; glass workers, 335; filemakers, 373; cutlers, 407;earthenware workers, 453. Miss Brandts table for the United States places marble and stone cutters,cigar makers, plasterers and printers even higher than cutlers. The relation between consumption and dust is easily seen. A manu-facturer by careful study of the bad air diseases among his men can get afair idea of the harm his factory is Fig. 373.—Showing the Choking withSoot of a Breathing Pore of a Leaf ofa Silver Fir Tree. (Arthur C. Ruston,University of Leeds.) DUSTY TEADES 905

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