Table III. shows the number of reported cases included in returns for each of the years 1900 to 1909. On the total figures there has been a reduction of 47·7 per cent. In the several industries the salient feature is that the considerable diminution achieved is limited to industries--notably white lead, earthenware and china, litho-transfers, and paints and colours--in which, under regulations or special rules, locally applied exhaust ventilation for the removal of dust, and periodical medical examination of the workers, have been required. Where, owing to the nature of the processes carried on, it has been found impracticable, in the present state of knowledge, to apply local exhaust ventilation, and where periodical examination of the workers is lacking, as in smelting of metals[A] and industries using paint, there has been tendency to increase in the number of cases. In coach-building the increase is in part due to activity in the motor-car industry. [A] This is now required by the regulations dated August 12, 1911. TABLE III.--NOTIFICATION OF POISONING BY LEAD (UNDER S. 73, 1901), 1900-1909. +--------------------------+--------------------------------------- | | Reported | +--------+-----+-----+-----+-----+-----+ | | Total | | | | | | | Industry. |1900-09.|1909.|1908.|1907.|1906.|1905.| +--------------------------+--------+-----+-----+-----+-----+-----+ | (1) | (2) | (3) | (4) | (5) | (6) | (7) | |LEAD POISONING |6,762²⁷⁵|553³⁰|646³²|578²⁶|632³³|592²³| | 1. Smelting of metals | 412¹⁸ | 66⁵ | 70² | 28² | 38¹ | 24¹ | | 2. Brass works | 75⁴ | 5 | 6 | 9¹ | 11 | 5¹ | | 3. Sheet lead and lead | | | | | | | | piping | 109³ | 9² | 14 | 6 | 7 | 9 | | 4. Plumbing and soldering| 217¹² | 28 | 27 | 20² | 16⁴ | 24² | | 5. Printing | 200¹⁷ | 21¹ | 30² | 26³ | 16² | 19⁴ | | 6. File-cutting | 211¹⁹ | 8 | 9² | 10 | 15 | 12 | | 7. Tinning and enamelling| 138² | 21 | 10 | 25 | 18¹ | 14¹ | | 8. White lead |1,295³¹ | 32² | 79³ | 71 |108⁷ | 90¹ | | 9. Red lead | 108 | 10 | 12 | 7 | 6 | 10 | |10. China and earthenware |1,065⁵⁷ | 58⁵ |117¹²|103⁸ |107⁴ | 84³ | |10_a._ Litho-transfers | 48 | 1 | 2 | 10 | 5 | 5 | |11. Glass cutting and | | | | | | | | polishing | 48⁹ | 4² | 3¹ | 4 | 4¹ | 3 | |12. Enamelling iron plates| 52¹ | 3 | 7 | 6 | 4 | 2 | |13. Electric accumulators | 285⁶ | 27² | 25¹ | 21 | 26 | 27¹ | |14. Paints and colours | 422⁷ | 39² | 25 | 35¹ | 37 | 57¹ | |15. Coach-building | 697⁴¹ | 95⁶ | 70³ | 70³ | 85⁷ | 56³ | |16.