Duties of landlord.

A landlord of a tenement— (a) shall maintain it in a habitable condition; and (b) except temporarily on occasions such as marriages and the like, shall not cause or permit the tenement to be overcrowded: Provided that no proceedings shall be instituted against the landlord in respect of any infringement by him of the provisions of this section, unless a notice that the tenement is not in a habitable condition or that it is overcrowded, has been served upon the landlord or his agent by the Health Officer and the landlord fails within such time as may be specified in such notice to take such steps as may be reasonably open to him for