Sec. 232.

Registration of purchasers of pistols, etc.—Any person engaged in any way or to any extent in the business of selling at retail, guns, pistols, other fire-arms or silencers for fire-arms who shall fail or neglect to keep a register in which shall be entered the name, age, occupation and residence (if residing in the city with the street number of such residence) of each and every purchaser of such guns, pistols, other fire-arms or silencers for fire-arms together with the number or other mark of identification, if any, on such gun, pistol, other fire-arms or silencer for fire-arms, which said register shall be open to the inspection of all peace officers at all times, shall be guilty of a misdemeanor.