reasoning of the judgment which prevailed. Their Honors say (1): -
"Tn a measure it must be conceded that the Stock Act of New South
'Wales does regulate the free flow of inter-State trade and commerce
in stock. If there is reason to believe that any infectious or
contagious disease in stock exists, the stock may be stopped at the
borders of New South Wales, and if it enters it may in some cases
be destroyed. The seeming conflict may be resolved, in our opinion,
by considering the true nature and character of the legislation in
the particular instance under discussion. The grounds and design
of the legislation, and the primary matter dealt with, its object and
scope, must always be determined in order to ascertain the class of
subject to which it really belongs ; and any merely incidental effect
it may have over other matters does not alter the character of the
law (see Lefroy, Canada's Federal System, pp. 210 et seq., summarizing
the effect of Russell v. The Queen (2) and Attorney-General for
Ontario v. Reciprocal Insurers (3) ). The Stock Act of New So
Wales is not in itself a regulation of inter-State commerce, thougl
controls in some degree the conduct and liability of those engag
in the commerce (cf. Judson on Inter-State Commerce, 2nd ed., se
33, p. 50). In truth, the object and scope of the provisions are
protect the large flocks and herds of New South Wales aga
contagious and infectious diseases, such as tick and Texas fever
looked at in their true light, they are aids to and not restricti
upon the freedom of inter-State commerce. They are a lawfu
exercise of the constitutional power of the State."
I find myself unable to regard this mode of reasoning as relevant
to sec. 92. It assumes that, because the legislation relates to disease
in cattle, it cannot relate to trade in cattle. It appears to me quil
plain that the statute stopped inter-State trade in cattle as a mea
of precaution against the spread of disease. When a State by legi
lation forbids importation from another State of an or c
commodity, it is difficult to understand what are the furth
considerations which must be inquired into under the description
"grounds and design of the legislation, the primary matter dealt
with, its object and scope " (4). If these words mean no more than