:
tion. The Crown is only bound by its express covenants
"Nothing passes except that which is expressed, or which is
matter of necessary and unavoidable intendment in order to give
effect to the plain and undoubted intention of the grant :" Feather
v. Regina (1); and see per Lord Selborne, Dixon v. London Small
Arms Co. (2). By express covenant I mean a covenant which is _
expressly stated, or which is to be found in the words used by
applying the ordinary rules of construction of documents (as in _
Lord vy. Commissioners of Sydney (3) ). A covenant which is
found, on the proper construction of the words used, is quite '<
different from a covenant which is thrust into a document by 4
implication of law ; and an implied covenant for quiet enjoyment
is of the latter class. In a country such as Australia, where the
Crown enters into direct transactions with its subjects in so many
directions, this question, whether the Crown is to be fixed with -
contracts which the words of its grant or other documents do not
express, becomes of very great importance. The rule exempting
the Crown may be old fashioned, may to some seem absurd ; but.
it is none the less binding. It is stated even in the recent
Digest of the Laws of England, which has been brought out under
the guidance of the Harl of Halsbury (see, eg., vol. vi, 410, 479,
496). The Crown is not bound by laches or by estoppels, though
the subject is; nor is it bound by fictions of law: (Godbolt, 299;
Jenkins, 287 ; Hobart, 339; Case of Banne Fishery (4); Chitty,
Prevog., 381). It will be observed that the principle to which
I refer is not the mere principle of construction, that where
Crown grants are doubtful in meaning they ought to be inte
preted in the manner most favourable to the Crown. There
here no question of construction of words at all. The quest
is whether a covenant, of which there is not the slightest sugge:
tion in the words used, is to be treated as inserted in the Crown
licence simply because it would be treated as inserted in a ]
granted by one subject to another.