To create a free trade area embracing the Australian colonies it was necessary for agreement to be reached about a uniform external tariff. Differing fiscal policies represented a formidable barrier to such agreement. Until 1873 there was another obstacle to the creation of a free trade area in the form of an Imperial prohibition against the imposition by any colony of duties "upon imports from "any particular country or place" which were not equally imposed on imports from "all other countries and places whatsoever" ": Quick & Garran, Annotated Constitution of the Australian Commonwealth (1901), p. 104 (Quick & Garran). The prohibition, which prevented preference to intercolonial trade, gave effect to the general policy adopted by the Imperial Government that tariffs be non-discriminatory. The policy was not opposed, however, to the creation of an Australian free trade area provided that any tariff upon entry into the area was non-discriminatory. By the Australian Colonies Duties Act 1873 Imp., the colonies were empowered to enter into reciprocal free trade arrangements. However, the diversity of their fiscal policies remained a stumbling block: see Quick & Garran, pp. 104-106. In particular, the Victorian tariff appeared to have the purpose of protecting local industry, whereas the tariff of New South Wales, which favoured free trade, was fixed for the purpose of satisfying budgetary requirements: see Patterson, The Tariff in the Australian Colonies 1856-1900 (1968), pp. 164-165. As the 1891 Report of the South Australian Royal Commission on Intercolonial Free Trade shows (p. vi), "intercolonial free trade, on the basis of a uniform tariff", was a commonly accepted ideal. Subsequently, the first report of a Victorian Board of Inquiry in 1894 expressed the belief "that the people of Victoria are practically unanimously in favour of free-trade between the colonies", though the report described the factors which were then impeding intercolonial trade: border taxes, differential railway freights designed to secure trade for Victorian lines and ports, and stock taxes levied to keep out cattle from interstate: First Report of the Victorian Board of Inquiry (1894), pp. 27-29. The report recommended that each colony be invited to join Victoria in a Customs Union: ibid., p. 29. In its second report the Board noted popular support for both protection of native industries and intercolonial free trade: Second Report of the Victorian Board of Inquiry (1895), p. x. Notwithstanding this popular support, concrete proposals for the implementation of free trade between the separate Australian colonies languished outside the growing movement towards federation.