| Tons Brit. | Tons For. | ||
| 1847. Total British Tonnage, | 4,942,094 | Total For. ton. | 2,253,939 |
| Deduct British colonial tonnage, | 1,970,372 | Foreign do. | 19,847 |
| Remains in trade with all the world except colonies, | 2,971,722 | 2,233,092 |
So that, setting aside our colonial trade, the British tonnage is to the tonnage with all the rest of the world as 29 to 22, or as 4 to 3 only! Considering the rapid strides which, under the reciprocity system established only with a limited number of countries in 1823, the foreign shipping is making in encroachment upon the British, this fact affords room for the most serious reflections. It is clear, from the great advance of foreign over British shipping in the single year of temporary suspension of the Navigation Laws, under the pressure of famine in 1847—viz. from 1,735,679, to 2,253,979; while the British in the same period advanced only from 4,310,639, to 4,942,094,—that two or three years of free trade in shipping will bring the foreign vessels employed in conducting our trade, exclusive of those engaged in the colonial, to an equality with the British. The moment that period arrives, our maritime superiority, and with it our national independence, hang entirely on our colonial trade, which, and which alone, strikes the balance at present in our favour. And yet, the colonial trade is the precise thing which it is the object of the repeal of the Navigation Laws to throw open to foreign nations! In their anxiety to cheapen every thing, the Free-traders would gladly expose our shipping interest engaged in the colonial trade to the same competition, which has already proved so disastrous to that part of it which is engaged in the traffic with foreign nations.
Observe how one false step in policy by nations, like one deviation from virtue in private life, leads by natural consequences to a repetition of errors and crimes, till irreparable ruin ensues. The agricultural interest at home was first attacked; and by the cry of cheap bread, and the weight of class legislation, its protection was taken away. The West India islands were the next victims; because, if the farmer in England raises his wheat with nothing but a nominal protection, it was plausible to say the West India planter must raise his sugar on the same terms. The ruinous competition to which this exposed the West India planters naturally produced in them a desire to be liberated from any burdens to which they were subjected for the benefit of the mother country; and in this demand the Canadians, exposed to the competition of American grain, for a similar reason concurred. Thus the cry for cheap freights, originating in free-trade principles in England, came to be responded to from the British colonies on the other side of the Atlantic; and the Navigation Laws began to be repudiated by the colonies—the very thing which formerly it was their most anxious desire to uphold. The firm though unseen bond of mutual interest, founded on protective principles, which has hitherto held together the vast and widely separated dominions of the British empire, is dissolved. Being deprived of the benefit of protection, they very naturally wished to be relieved of its burdens. Such is the maze of error and danger into which we have been led by the sophistry of free trade; and such the way in which the greatest and best consolidated empires are first loosened, and then destroyed, by the delusions of those entrusted with their guidance.
The manner in which foreign shipping has encroached upon British, since the reciprocity system began in 1823, is clearly proved by the centesimal proportions of each, published by Mr Porter, from 1820 to 1844, both inclusive.
It will be seen from the following table, that, since 1820, the centesimal proportion of British shipping employed in conducting our trade has declined from 78 to 72, while that of foreign nations has increased from 21 to 27. But this proportion, such as it is, is solely upheld by our colonial trade, which, as already shown, employs nearly 2,000,000 tons of our shipping. But for it, the encroachment of foreign on British shipping would appear in such alarming colours as to strike the most inconsiderate. It is the rapid growth of our colonial trade under the protective system which has alone concealed the ravages effected on it by free trade under the reciprocity.
Centesimal Proportions of the British and Foreign Tonnage employed in the Import Trade of the United Kingdom from 1820 to 1844.
| Year. | Brit. inward. | For. inward. | Year. | Brit. inward. | For. inward. |
| 1820 | 78·84 | 21·16 | 1834 | 73·37 | 26·63 |
| 1821 | 80·14 | 19·86 | 1835 | 73·85 | 26·15 |
| 1822 | 78·00 | 22·00 | 1836 | 71·41 | 28·59 |
| 1823[10] | 74·91 | 25·09 | 1837 | 72·23 | 27·77 |
| 1824 | 70·29 | 29·71 | 1838 | 69·68 | 30·32 |
| 1825 | 69·12 | 30·88 | 1839 | 69·96 | 30·04 |
| 1826 | 73·75 | 26·25 | 1840 | 68·64 | 31·36 |
| 1827 | 73·51 | 26·49 | 1841 | 72·24 | 27·76 |
| 1828 | 76·74 | 23·26 | 1842 | 73·21 | 26·79 |
| 1829 | 75·46 | 25·54 | 1843 | 73·14 | 26·86 |
| 1830 | 74·18 | 25·82 | 1844 | 72·23 | 27·77 |
| 1831 | 73·02 | 26·98 | 1845 | ... | ... |
| 1832 | 77·35 | 22·65 | 1846 | ... | ... |
| 1833 | 74·13 | 25·87 | 1847 | ... | ... |
—Porter's Progress of the Nation, 416, 2d edition.