Parker C.J. founded his judgment on the one circumstance that by the terms of their contracts with the breweries the present respondents had not sold the bottles, but had expressly hired them, with a stipulation for resumption of possession when the bottles were emptied. His Honor found that the method of sale to retail customers was the same as it had been prior to 1st December 1912, when, as he said, "undoubtedly the bottle passed to the customer." But, said his Honor, the Company neither sold nor authorized any person to sell the bottles, and so its title was not divested.
It is clear that the learned Chief Justice thought estoppel had
relevance to such a case. In the Full Court 1 McMillan C.J. (then Acting Chief Justice) referred to the contention of Mr. Pilkington that notwithstanding the actual terms of the contracts "the plaintiffs knew that the hotelkeepers and the grocers would sell to the public, that they authorized what was in fact a sale by the retailers to the public, and that, therefore, they are not entitled to recover the bottles which have passed to the purchasers under these conditions."
That argument has two aspects. First, it would be supported if the contract were not really one of hiring but a sale; or, secondly, it might bring in estoppel.
The learned Judge disagreed with the first aspect, and as to the second, said 2 :- The position might be a very different one if an action of this kind were brought against a person who had bought beer in bottles without any notice of the real facts, because it might then be quite possible for the purchaser to rely on an estoppel.
But no question of that kind can arise here, as the defendant was fully aware of the real facts of the case, and bought the bottles in question with his eyes open." Further on, his Honor says (2) :- In this case, in which the defendant had express notice, there is no answer to be found to their" (the Company's) "claim." Burnside J. took the same view, and said (2):-"I think the defendant became possessed of the bottles with the full knowledge of the circumstances under which the plaintiff Com- pany parted with possession of them, and I do not think that he can rely upon any intermediate act of the grocers or the private
115 W.A.L.R., 42, at p. 45. 215 W.A.L.R., 42, at p. 46.