It shall be unlawful for any person, firm or corporation to keep or cause to be kept any cows within the limits of the City and County of San Francisco, except as herein provided.
Any person, firm or corporation may keep one cow upon any lot within the City and County, subject to provisions of Section 27 of this Article and all other laws and ordinances regulating the erection and maintenance of stables.
Any person, firm or corporation may keep two or more cows if the person, firm or corporation so keeping the same shall set apart for the use of each two cows so kept at least one acre of land, and such cows shall have full access thereto.
The provisions of this Section shall not apply to cattle temporarily confined for slaughtering purposes, nor to cattle in transit.