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The Great Events by Famous Historians [Volumes 1-14]

Электронная книга - «The Great Events by Famous Historians [Volumes 1-14]». Краткое содержание книги:

Антология содержит:
The Great Events by Famous Historians, Volume 01
The Great Events by Famous Historians, Volume 02 / (From the Rise of Greece to the Christian Era)
The Great Events by Famous Historians, Volume 03
The Great Events by Famous Historians, Volume 04
The Great Events by Famous Historians, Volume 05 / (From Charlemagne to Frederick Barbarossa)
The Great Events by Famous Historians, Volume 06 / (From Barbarossa to Dante)
The Great Events by Famous Historians, Volume 07
The Great Events by Famous Historians, Volume 08 / The Later Renaissance: from Gutenberg to the Reformation
The Great Events by Famous Historians, Volume 09
The Great Events by Famous Historians, Volume 10
The Great Events by Famous Historians, Volume 11
The Great Events by Famous Historians, Volume 12
The Great Events by Famous Historians, Volume 13
The Great Events by Famous Historians, Volume 14
The Great Events by Famous Historians, Volume 17
The Great Events by Famous Historians, Volume 21 / The Recent Days (1910-1914)
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Watt's regulator, and an intelligent use of the revolving principle—that is the secret, the true secret, of the astonishing perfection of the industrial products of our epoch; this is what now gives to the steam-engine a rate entirely free from jerks. That is the reason why it can, with equal success, embroider muslins and forge anchors, weave the most delicate webs and communicate a rapid movement to the heavy stones of a flour-mill. This also explains how Watt had said, fearless of being reproached for exaggeration, that to prevent the comings and goings of servants, he would be served, he would have gruel brought to him, in case of illness, by tables connected with his steam-engine. I am aware it is supposed by the generality of people that this suavity of motion is obtained only by a loss of power; but it is an error, a gross error: the saying, "much noise and little work," is true, not only in the moral world, but is also an axiom in mechanics.

A few words more and we shall reach the end of our technical details. Within these few years great advantage has been found in not allowing a free access of steam from the boiler into the cylinder, during the whole time of each oscillation of the engine. This communication is interrupted, for example, when the piston has reached one-third of its course. The two remaining thirds of the cylinder's length are then traversed by virtue of the acquired velocity, and especially by the detention of the steam. Watt had already indicated such an arrangement. Some very good judges esteem the economical importance of the steam-detent as equal to that of the condenser. It seems certain that since its adoption the Cornwall engines give unhoped-for results; that with one bushel of coal they equal the labor of twenty men during ten hours. Let us keep in mind that in the coal districts a bushel of coal only costs ninepence, and it will be demonstrated that over the greater part of England Watt reduced the price of a man's day's work, a day of ten hours' labor, to less than a sou (one halfpenny).

Numerical valuations make us appreciate so well the importance of his inventions that I cannot resist the desire to present two more improvements. I borrow them from one of the most celebrated correspondents of the Academy—from Sir John Herschel.

The ascent of Mont Blanc, starting from the valley of Chamounix, is justly considered as the hardest work that a man can accomplish in two days. Thus the maximum mechanical work of which we are capable in twice twenty-four hours is measured by transporting the weight of our body to the elevation of Mont Blanc. This work or its equivalent would be accomplished by a steam-engine in the course of burning one kilogram (two pounds) of coal. Watt has, therefore, ascertained that the daily power of a man does not exceed what is contained in half a kilogram (one pound) of coal.

Herodotus records that the construction of the great Pyramid of Egypt employed 100,000 men during 20 years. The pyramid consists of calcareous stone; its volume and its weight can be easily calculated; its weight has been found to be about 5,900,000 kilograms (nearly 5,000 tons). To elevate this weight to 38 metres, which is the pyramid's centre of gravity, it would require to burn 8244 hectolitres of coal. Our English neighbors have some foundries where they consume this quantity every week.

FOOTNOTES:

[57] Watt was one of the eight foreign associates of the French Academy of Sciences, which body Arago was addressing.—Ed.

FIRST PARTITION OF POLAND

A.D. 1772

JAMES FLETCHER

Of the three partitions which Poland underwent in the last quarter of the eighteenth century, the first was due to the jealousies of European powers. It was an event of great significance for the Polish kingdom, ominous of future spoliations, which indeed followed, to the destruction of its political life. It had been long since Poland passed her golden age—two centuries and more. In the mean time she had undergone many vicissitudes, yet had preserved her identity as a state.

When Russia had won successes in the war of 1768-1774 with Turkey, she seized the principalities of Wallachia and Moldavia. Austria, seeing in this acquisition a menace to her eastern frontier, opposed it. Russia, in order to appease Austria, looked about for territory that might be obtained for her in compensation. The state of affairs in Poland presented a tempting opportunity for interference which might lead to a division of the kingdom. Stanislaus II, King of Poland, had been elected in 1764, mainly through the influence of Russia—he was one of Catharine II's lovers. His people had risen against him when Russia adopted her policy of spoliation. Prussia, as well as Austria, advanced territorial claims, and the partition of 1772, really planned by Frederick the Great, was consummated on the basis of a secret treaty of those powers with Catharine's government.

Some writers, possessed with the love of reducing political transactions to one rigid scale of cause and effect, and at the same time of exhibiting their acumen by threading the mazes of events up to remote circumstances, pretend to trace the design of the partition of Poland for more than a century back. Rulhière seems to plume himself on the idea. "The projects executed in our days against Poland," he observes, "were proposed more than a hundred years ago. I have discovered this important and hitherto unknown circumstance in the archives of foreign affairs of France." This point had been canvassed under the reign of John Casimir; and it only remains to be remarked that such very subtle analysis of the motives and progress of actions generally overshoots the mark, since no men can act always according to rule, but are in some degree influenced by circumstances and caprice. It would be equally absurd to imagine that Frederick, in the complicated intrigues which preceded the first partition, was actuated by one deeply laid scheme of policy to arrive at one end: the possession of Polish Prussia. It was, indeed, absolutely essential for him to obtain this province, to consolidate and open a communication between his scattered dominions, which then, as Voltaire says, were stretched out like a pair of gaiters; but it remained a desideratum rather than a design, since he knew that neither Russia nor Austria would be inclined to permit the aggression; for the former had evidently marked out the whole of Poland for herself, and would consider Frederick an unwelcome intruder; while Austria, which had lately experienced the Prussian King's encroachments, was more jealous than ever of his obtaining the slightest aggrandizement, and had openly declared that she would not allow the seizure of the least Polish village. His views, however, widened as he advanced, and no doubt he spoke with sincerity when he told the Emperor Joseph that "he had never followed a plan in war, much less any plan in policy, and that events alone had suggested all his resolutions." Admitting the truth of this, we proceed to trace out the circumstances which produced this crisis.

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