In these conditions: (a) Reference to the 'the Auctioneer' shall be taken to mean the firm of Gardiner Houlgate or any director, partner or employee thereof at the time of sale; (b) Buyers shall be deemed to be the principals unless to the prior knowledge of the Auctioneer they are acting as agent on behalf of a named principal; (c) 'Forgery' means a lot (i) which is so constituted as deliberately to deceive when considered in the light of its catalogue description, and (ii) whose value as such is materially less that if it had complied with the catalogue description; (d) The Interpretation Act 1978 shall apply to the general construction of terms and expressions used in these Conditions as if contained in a statute.