This Order states that veterinary surgeons and veterinary practitioners are the appropriate persons to prescribe the veterinary drugs covered by the Order (art. 3). The Order also specifies description or classes of veterinary drugs for the purposes of section 58 of the Medicines Act 1968 (art. 4). By virtue of section 58, as read with this Order, such products may be sold or supplied by retail only in accordance with a prescription given by a veterinary surgeon or veterinary practitioner and ma