Sec. 13. No room or rooms, apartment or apartments, in any tenement or dwelling-house, shall be used for the manufacture of coats, vests, trousers, knee-pants, overalls, cloaks, furs, fur-trimmings, fur-garments, shirts, purses, feathers, artificial flowers, or cigars, excepting by the immediate members of the family living therein. No person, firm, or corporation shall hire or employ any person to work in any one room or rooms, apartment or apartments, in any tenement or dwelling-house, or building in the rear of a tenement or dwelling-house, at making in whole or in part any coats, vests, trousers, knee-pants, fur, fur-trimmings, fur-garments, shirts, purses, feathers, artificial flowers, or cigars, without first obtaining a written permit from the Factory Inspector, Assistant Factory Inspector, or a Deputy Factory Inspector, which permit may be revoked at any time the health of the community or of those employed therein may require it, and which permit shall not be granted until an inspection of such premises is made by the Factory Inspector, Assistant Factory Inspector, or a Deputy Factory Inspector, and the maximum number of persons allowed to be employed therein shall be stated in such permit. Such permit shall be framed and posted in a conspicuous place in the room or in one of the rooms to which it relates. Sec. 14. Not less than two hundred and fifty cubic feet of air space shall be allowed for each person in any workroom where persons are employed during the hours between six o'clock in the morning and six o'clock in the evening, and not less than four hundred cubic feet of air space shall be provided for each person in any workroom where persons are employed between six o'clock in the evening and six o'clock in the morning. By a written permit the Factory Inspector, Assistant Factory Inspector, or a Deputy Factory Inspector, with the consent of the Factory Inspector, may allow persons to be employed in a room where there are less than four hundred cubic feet of air space for each person employed between six o'clock in the evening and six o'clock in the morning, provided such room is lighted by electricity at all times during such hours while persons are employed therein. There shall be sufficient means of ventilation provided in each workroom of every manufacturing establishment; and the Factory Inspector, Assistant Factory Inspector, and Deputy Factory Inspectors, under the direction of the Factory Inspector, shall notify the owner, agent, or lessee, in writing, to provide, or cause to be provided, ample and proper means of ventilating such workroom, and shall prosecute such owner, agent, or lessee, if such notification be not complied with within twenty days of the service of such notice.