Sec. 3 begins by prohibiting any sale in Queensland of motor spirit situate in Queensland at the time of sale for delivery in Queensland unless the seller is licensed under the Act as a motor spirit vendor. It is to be noticed that, by the express restriction of its operation to motor spirit situated in the State, the provision avoids applying its prohibition to sales of petrol which, although made in Queensland, are to be fulfilled by delivery from another State, and that, by the restriction to delivery in Queensland, it avoids applying its prohibition to sales for delivery from Queensland into another State. Thus it is not open to objection as a direct interference with the making of inter-State contracts. It is not in this respect that it violates sec. 92. Further, prima facie, it is a general fetter on sales of motor spirit which is uniform and does not particularly affect the importer. This prima facie uniformity of operation is, however, controlled by the provisos to sec. 3 and sec. 6, the effect of which is strengthened by the definition of "sell." The very wide definition of the verb "to sell" and its derivatives includes supplying for profit, dealing in, receiving for sale, having in possession for sale, and forwarding or delivering for sale. By sec. 6, the holder of a motor spirit vendor's licence shall during its currency, which is twelve months, purchase and pay for the quantity of power alcohol, which bears the required proportion to the quantity of petrol he sells. The proviso to sec. 3, which prohibits sale without licence, is as follows: "Provided that any person who buys motor spirit for the purposes of sale from a person who holds a motor spirit vendor's licence under this Act shall be deemed to have complied with the provisions of this section upon proof that the person from whom he buys such motor spirit is so licensed, and any such person shall for the purposes of this Act be deemed to be a licensed person and the agent of the licensee accordingly." The effect of this provision is to relieve from the necessity of obtaining a licence all persons who sell petrol which has been already sold by a licensed vendor. No doubt, in the ordinary course the importer supplies the petrol directly to the retailers who, through petrol pumps or otherwise, supply the consumer. But, however many intermediate transactions there might be, it is, I think, the purpose and effect of the proviso to sec. 3 to exclude from the requirement of a licence all but the first. This result is produced by the last part of the proviso, which, for the purposes of the Act, deems the buyer from a licensed person to be a licensed person and to be the agent for the licensee. As the buyer is deemed to be a licensed person for the purposes of the Act, when he sells, his buyer will be in the same position as if he bought from a licensed person, and, indeed, as the seller is deemed the agent of the licensee, he is to be regarded as buying from the licensed person. Each successive sale will thus be within the proviso. Sec. 6, which requires the licensed motor spirit vendor to purchase the power alcohol, ends with a corresponding proviso, which, although depending entirely on statutory agency for the licensed person, produces the same result in relieving subsequent purchasers who might, as persons deemed to be licensed, come within the requirement of sec. 6.