THREE:[565]
THREE:Sir Mark Isambard Brunel, a hero of mechanical science, made a great step in advance by the invention of self-acting machinery to supersede the work of artisans, by which a new epoch was created in art. The greatest effort of Brunel was the Thames Tunnel, a structure of perfect firmness and solidity laid on a quicksand, and forced through a quaking mass of mud, which will endure like the cloac? of regal Rome, when the palace and the cathedral have crumbled to dust. He was enabled to accomplish this prodigious work by means of "the shield"a movable vertical frame of cast iron, provided with thirty-six cells, in each of which a man was placed with a pick to excavate the area, this frame or shield being moved bodily forward by powerful screws, while the bricklayers brought up the arched masonry behind, which was then beyond the power of injury. The works, however, were several times "drowned" during their progress by the irruptions of the Thames, but every fresh difficulty was met successfully by the heroic engineer. The tunnel was commenced on the 2nd of March, 1825, and finished on the 25th of March, 1843. Brunel survived the completion of this, his greatest work, above six years, dying on the 12th of December, 1849.[See larger version]
THREE:In 1720 Colin Maclaurin, the successor of James Gregory in the mathematical chair at Edinburgh, published his "Geometrical Organica," a treatise on curves; in 1742 his admirable treatise on Fluxions; and in 1748 his treatise on Algebra. Dr. Robert Simson, professor of mathematics at Glasgow, published a restoration of the "Loci" of Apollonius, and an English translation of Euclid, which continued down to a late period in use, both in Scotland and England. In 1717 James Stirling published a Latin treatise on lines of the third order, and another on Fluxions, called "Methodus Differentialis," in 1730. William Emerson, a mathematician and mechanist, wrote on fluxions, trigonometry, mechanics, navigation, algebra, optics, astronomy, geography, dialling, etc., but a considerable portion was only in part published during this period. Thomas Simpson, a weaver, of Market Bosworth, at the age of seven-and-twenty suddenly discovered himself as an extraordinary mathematician, and went on till his death, in 1761, publishing works on fluxions, the nature and laws of chance, on mixed mathematics, on the doctrine of annuities and reversions, on algebra, elementary geometry, trigonometry, etc. James Ferguson, also, the son of a day-labourer, in Banffshire, studied mathematics whilst tending sheep, and published a number of works on the phenomena of the harvest moon, astronomy, mechanics, hydrostatics,[154] pneumatics, and optics. Ferguson had a remarkably lucid and demonstrative style, both in writing and lecturing, and his example excited a keen spirit of inquiry amongst the working classes, so that he is said to have diffused the knowledge of physical science amongst the class from which he sprang more than any other man.
THREE:The people might have dragged on a considerable time still in their misery; but the Government was in its death-throes for want of revenue, and Louis XVI., who ascended the throne in 1774, had but little political sagacity. The administration groaned beneath a mountain of debts; the mass of the people were exhausted in their resources; trade was ruined by these causes; and the nobility and clergy clung convulsively to their prescriptive exemptions from taxation. Long before the American war the State was in reality bankrupt. The Prime Minister of Louis XVI., the Count de Maurepas, was never of a genius to extricate the nation from such enormous difficulties; but now he was upwards of eighty years[357] of age; and, besides that, steeped in aristocratic prejudices. Still, he had the sense to catch at the wise propositions of Turgot, who was made Comptroller-General, and had he been permitted to have his way, might have effected much. Turgot insisted that there must be a rigid and inflexible economy introduced into all departments of the State, in order gradually to discharge the debts. The excellent Malesherbes being also appointed Minister of Justice, these two able and good men recommended a series of reforms which must have struck the old and incorrigible courtiers and nobility with consternation. They prevailed in having the Parliament restored, and they recommended that the king should himself initiate the business of reform, thus preventing it from falling into less scrupulous hands, and so attaching the body of the people to him by the most encouraging expectations. Turgot presented his calculations and his enlightened economic plans, and Malesherbes drew up his two memoirs "On the Calamities of France, and the Means of Repairing them;" but they had not a monarch with the mind and the nerve to carry out the only reforms which could save the monarchy. Turgot, who was of the modern school of philosophy himself, and well knew the heads of the school, recommended that they should be employed by Government. Had this been done, the voices that were raised so fatally against the king and Crown might have been raised for them, and the grand catastrophe averted. But Louis could not be brought to listen to any measures so politic; indeed, he was listening, instead, to the cries of fierce indignation which the privileged classes were raising against all reform. Turgot succeeded in abolishing the corves, the interior custom-houses between one province and another, and some other abuses, but there the great plan was stopped. Both Louis and his Minister, Maurepas, shrank from the wrath of the noblesse and the clergy, and desisted from all further reform.