This depressing effect of adverse sanitary circumstances on the labouring strength of the population, and on its duration, is to be viewed with the greatest concern, as it is a depressing effect on that which most distinguishes the British people, and which it were a truism to say constitutes the chief strength of the nation—the bodily strength of the individuals of the labouring class. The greater portion of the wealth of the nation is derived from the labour obtained by the application of this strength, and it is only those who have had practically the means of comparing it with that of the population of other countries who are aware how far the labouring population of this country is naturally distinguished above others. There is much practical evidence to show that this is not a mere illusion of national vanity, and in proof of this I might adduce the testimony of some of the most eminent employers of large numbers of labourers, whose conclusions are founded on experience in directing the work of labourers from the chief countries in Europe, _e. g._, Mr. William Lindley, the civil engineer, engaged in the superintendence of the formation of the new railway between Hamburgh and Berlin, found it expedient to import as the foremost labourers for the execution of that work a number of the class of English labourers called navigators. These were recently employed in pile-driving at wages of 5_s._ per diem, or more than double the amount of wages paid to the German labourers. The German directors were surprised, and remonstrated at the enormously high wages paid to the English labourers; when the engineer directed their attention to the quantity of work performed within a given time, and showed that the wages produced more than amongst the native labourers. English labourers of the same class have been imported to take the foremost labour in the execution of the railways in progress from Havre to Paris, their work at very high wages being found cheaper than the work even of the Norman labourers. Skill and personal strength are combined in an unusually high degree in this class of workmen, but the most eminent employers of labour agree that it is strength of body, combined with strength of will, that gives steadiness and value to the artisan and common English labourer. Nor is such experience confined to one branch of industry. In the heaviest works of the manufactories on the continent the strength and energy of the English artisan puts him in advance of all others. _Mr. J. Thomson_, of Clitheroe, in treating of a question affecting the branch of industry, cotton-printing, in England, observes:—