must further observe that, as the mortgage was effectual as a
valid title to Kalimuddin, the lender, under which, in default of -
payment of the money lent, he was entitled to sell the property,
it follows that any purchaser from him under a sale regularly
carried out would acquire a valid title to the property, even though
he were fully aware of all the circumstances which had attende
the execution of the hiba " (the deed under which the mort
Ahmed's mother claimed), "and that it had been originall,
invalid." To refuse the full benefit of the estoppel title to the
purchaser would obviously detract from its value to the party
first entitled to it by denying to ownership the right of aliena-
tion. "4
It is apparent, therefore, that if it could be shown here that the
consumers had a right by estoppel against the bottle Company,
Curtis as privy to them could also successfully rely on it notwith-
standing notice of a title which as between his vendors and the
Company had passed away from the Company. That necessitates
inquiry, and for the first time, as to the consumers' rights.
It is no doubt well established law (see George Whitechwrch Ltd,
v. Cavanagh (1) ) that estoppel must be established by evidence
precise and unambiguous, in the sense that the language or con-
duct relied on must be such as will be reasonably understood in
a particular sense by the person affected. But it is trite law also
that "if a person authorize another to assume the apparent right
of disposing of property in the ordinary course of trade, it must
be presumed that the apparent authority is the real authority":
Pickering v. Bush (2).
Beyond question the Bottle Company contemplated as part of
the use to which these bottles should be put, that they, containing
beer, should be handed on to retail dealers for the purpose of
being handed to customers in the ordinary course of business,
that part of that business should be the sale of the contents, and.
that some right short of ownership and terminating only with
consumption of the contents should pass to the purchaser in
respect of the bottle. If no notice to the contrary were conveyed
to a purchaser in the ordinary course of trade, I should say that
notwithstanding the actual secret limitations of authority the