s 37 Interpretation.
(1) In this Act, except in so far as the context otherwise requires, the following expressions have the meanings hereby assigned to them respectively, that is to say:— “ the Advisory Council ” means the Advisory Council on the Misuse of Drugs established under this Act; “cannabis” (except in the expression “cannabis resin”) means any plant of the genus Cannabis or any part of any such plant (by whatever name designated) except that it does not include cannabis resin or any of the following products after separation from the rest of the plant, namely— mature stalk of any such plant, fibre produced from mature stalk of any such plant, and seed of any such plant; “ cannabis resin ” means the separated resin, whether crude or purified, obtained from any plant of the genus Cannabis; “ contravention ” includes failure to comply, and “ contravene ” has a corresponding meaning; “ controlled drug ” has the meaning assigned by section 2 of this Act; “ corresponding law ” has the meaning assigned by section 36(1) of this Act; “ dentist ” means a person registered in the dentists register under the Dentists Act 1984 ... ; “ doctor ” means a registered medical practitoner within the meaning of Schedule 1 to the Interpretation Act 1978; “ enactment ” includes an enactment of the Parliament of Northern Ireland; “person lawfully conducting a retail pharmacy business” ... means a person lawfully conducting such a business in accordance with section 69 of the Medicines Act 1968; “ pharmacist ” has the same meaning as in the Medicines Act 1968; “practitioner” (except in the expression “veterinary practitioner”) means a doctor, dentist, veterinary practioner or veterinary surgeon; “ prepared opium ” means opium prepared for smoking and includes dross and any other residues remaining after opium has been smoked; “ prescribed ” means prescribed by regulations made by the Secretary of State under this Act; “produce”, where the reference is to producing a controlled drug, means producing it by manufacture, cultivation or any other method, and “ production ” has a corresponding meaning; “supplying” including distributing; “ temporary class drug order ” means an order made under section 2A(1); “ veterinary practitioner ” means a person registered in the supplementary veterinary register kept under section 8 of the Veterinary Surgeons Act 1966; “ veterinary surgeon ” means a person registered in the register of veterinary surgeons kept under section 2 of the Veterinary Surgeons Act 1966. (2) References in this Act to misusing a drug are references to misusing it by taking it; and the reference in the foregoing provision to the taking of a drug is a reference to the taking of it by a human being by way of any form of self-administration, whether or not involving assistance by another. (3) For the purposes of this Act the things which a person has in his possession shall be taken to include any thing subject to his control which is in the custody of another. (4) Except in so far as the context otherwise requires, any reference in this Act to an enactment shall be construed as a reference to that enactment as amended or extended by or under any other enactment. (5) ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .