There was no instalment of Free Trade, which need be taken into our account, before 1842. ... I therefore take 1843 as the first operative year of the first instalment of Liberal legislation under what was called the new Tariff. The second instalment was the new Tariff of 1845. The third instalment was the repeal of the Corn Laws at the opening of 1849, together with the repeal of the Navigation Laws during the Parliamentary Session of that year. The fourth was the new Tariff of 1853, accompanied with the repeal of the Soap Duties and other changes. The fifth and last great instalment was granted by the Customs Act of 1860, which at length gave nearly universal effect to the following principles:
1. That neither on raw produce, nor on food, nor on manufactured goods, should any duty of a protective character be charged.
2. That the sums necessary to be levied for the purposes of revenue in the shape of Customs duty should be raised upon the smallest possible number of articles.