68. Every person who is guilty of an offence contemplated in sections 66 and 67 is liable, if no other penalty is provided for such offence:(a) in the case of an individual to a fine of not more than $700;
(b) in the case of a corporation to a fine of not more than $1 400;
(c) for every subsequent offence within two years, to a fine the amount of which must be equal to twice the maximum fine provided for in paragraph a or b, as the case may be.