It may seem passing strange that England, whose manufacturing power is so enormous, should have to resort to foreign manufacturers for the arms wherewith to fight. Money in such a country, it is often said, can procure anything, and money in this case was no object. The want of suitable machinery was the cause of the difficulty. The manufacturers could only make the articles demanded of them by skilled labour, which is a thing that must be acquired before it can be hired. Old machines can be put to extra duty; fresh machines can be readily supplied; but skilled labour is a fixed capital which cannot be suddenly increased. The result was a lamentable slowness of production and an extraordinary dearness of price--the munitions of war in some cases more than doubled in value. It is calculated that the shells for the Baltic fleet alone, which were fabricated entirely by private manufacturers, cost upwards of £100,000 more than they would have done had they been made by the new machinery lately introduced into the Arsenal. A still stronger case, to show the extraordinary prices which the Government had to pay contractors when the demand was imperative and supply confined to two or three houses, was that of the six-pounder diaphragm shells. They were charged by the contractors at 73_l._ per ton, whilst the very same article is now made in the Royal Laboratory at 14_l._ 19_s._ 2_d._ per ton. These exorbitant demands and the rapid drain of the stores led the War Department to consider whether it would not be better to organize a government establishment on the most extensive scale, and on the most improved system; and it was ultimately determined to adopt a plan by which it would be possible to expand or contract the productive power, according to the exigencies of the service, by means of machines which could be tended by untutored labourers and boys. Accordingly, a very large number of the most ingenious machines were procured from the United States, where the Springfield and Harper Ferry Arsenals have long been famous for their admirable contrivances to save human skill; while others were procured from the Continent and at home by Mr. Anderson, the superintendent of machinery. In a very short time a powerful factory of the munitions of war sprung into life, verifying, for the ten-thousandth time, the truth of the proverb that necessity is the mother of invention, or at least, as in this case, of improvement.