§ 7. The history of the cotton industry is in its main outlines also the history of other textile industries. We do not possess the same means of measuring statistically the growth of the woollen industries in the period of revolution; but since, on the one hand, many of the spinning and weaving inventions were speedily adapted into the woollen from the cotton industry, while the application of steam to manufacture and the effects of steam locomotion were shared by the older manufacture, the growth of the trade in the main conforms to the same divisions of time. The figures of imported wool are not so valuable a register as in the case of cotton, because no account is taken of home-produce, but the following statistics of foreign and colonial wool imported into England serve to throw light upon the growth of our woollen manufactures. STATISTICS OF WOOL IMPORTED INTO ENGLAND. lbs. lbs. 1766 1,926,000 | 1830 32,305,000 1771 1,829,000 | 1840 49,436,000 1780 323,000 | 1850 74,326,000 1790 2,582,000 | 1860 151,218,000 1800 8,609,000 | 1870 263,250,000 1810 10,914,000 | 1880 463,309,000 1820 9,775,000 | 1892 743,046,104 In the silk industry the influence of machinery is complicated by several considerations especially affecting this manufacture. Although the ingenuity and enterprise of the Lombes had introduced complex machinery into silk throwing many years before it was successfully applied to any other branch of textile industry, the trade did not grow as might have been expected, and the successive increments of great mechanical invention were slowly and slightly applied to the silk industry. There are special reasons for this, some of them connected with the intrinsic value of the commodity, others with the social regulation of the trade. The inherent delicacy of many of the processes, the capricious character of the market for the commodities, the expensive production of which renders them a luxury and especially amenable to the shifts of taste and fashion, have preserved for artistic handicraft the production of many of the finer silk fabrics, or have permitted the application of machinery in a far less degree than in the cotton and woollen industries. Moreover, the heavy duties imposed upon raw and thrown silk, which accompanied the strict prohibition of the importation of manufactured silk goods in 1765, by aggravating the expenses of production and limiting the market at the very epoch of the great mechanical inventions, prevented any notable expansion of consumption of silk goods, and rendered them quite unable to resist the competition of the younger and more enterprising cotton industry, which, after the introduction of colour-printing early in the nineteenth century, was enabled to out-compete silk in many markets.