13. The occupier shall appoint a duly qualified medical practitioner (whose name shall be sent to the Inspector of Factories) to supervise the health of those exposed to the effects of carbon bisulphide. He shall examine the workers once every month with a view to the detection of poisoning by carbon bisulphide. By direction of the medical practitioner workers showing signs of carbon bisulphide poisoning shall be suspended from work and those who appear peculiarly susceptible shall be suspended permanently from work in processes mentioned in paragraph 10. 14. The occupier shall keep a book, or make some official responsible for its keeping, of the changes in the personnel in the processes mentioned in paragraph 10 and as to their state of health. The book shall contain— (1) The name of the person keeping the book; (2) The name of the appointed surgeon; (3) Surname, Christian name, age, residence, date of first employment, and date of leaving of every worker mentioned in paragraph 10, and the nature of the employment; (4) The date of any illness and its nature; (5) Date of recovery; (6) The dates and results of the prescribed medical examination. 15. The occupier shall require the workers to subscribe to the following conditions:— No worker shall take food into the vulcanising rooms; The workers shall use the protection afforded in paragraphs 5-7 and use the overalls in the work named; The workers shall obey the directions of the occupier given in accordance with Rule 5, paragraphs 1 and 2, Rule 8, paragraphs 1 and 2, and Rule 9, paragraph 2. Workers contravening these orders shall be liable to dismissal without further notice. If in a factory regulations already exist (paragraph 134(a) of the Industrial Code) the above shall be included. 16. In the vulcanising rooms mentioned in Rule 1 there shall be posted up a notice by the police stating— (_a_) The cubic capacity of the rooms; (_b_) The number of workers who may be employed. Further, in every vulcanising room there shall be posted up in a conspicuous place and in clear characters Rules 1-15 and the conditions in paragraph 15. Reference should be made also to the Prussian Ministerial Decree, dated February 23, 1910, on the preparation, storing, and manufacture of carbon bisulphide, and to the French Ministerial Circular, dated January 20, 1909 (Manufacture of Indiarubber). Employment of benzine and chloride of sulphur for vulcanising is, from a hygienic standpoint, to be preferred to that of the much more dangerous carbon bisulphide. The same applies also to the process of the extraction of fat.