Watt found this model so imperfect, although it was the most perfect then known, that he could with difficulty get it to work. The more he examined it, the more deeply he became convinced that the properties of steam had never been understood; the engine was, in fact, an atmospheric rather than a steam engine. By laborious investigation he ascertained that the evaporation of water proceeded more or less rapidly in proportion to the degree of heat made to enter it; that the process of evaporation was quickened as a greater surface of water was exposed to heat, the quantity of coals necessary to raise a certain weight of water into steam, and the degrees of heat at which water boils under different pressures. He had now learnt enough of the nature of the great element he proposed to wield; but it required long thought and the most exhaustless application of contrivance to give his vaporous giant a fitting body, limbs, joints, and sinews, and so to adapt these as to render them a self-regulating mechanism. Watt found a coadjutor in the person of Boulton, of Birmingham, who was possessed of capital, and the will to embark it; and he now set to work to perfect his discovery, and did perfect it; thus revealing to man the greatest instrument of power yet put into his possession.
“In the present perfect state of the engine,” says Dr. Arnott, in his “Elements of Physics,” “it appears a thing almost endowed with intelligence. It regulates with perfect accuracy and uniformity the number of its strokes in a given time; counting or recording them, moreover, to tell how much work it has done, as a clock records the beats of its pendulum; it regulates the quantity of steam admitted to work; the briskness of the fire; the supply of water to the boiler; the supply of coals to the fire; it opens and shuts its valves with absolute precision as to time and manner; it oils its joints; it takes out any air which may accidentally enter into parts which should be vacuous; and when anything goes wrong, which it cannot itself rectify, it warns its attendants by ringing a bell: yet with all these talents and qualities, and even when exerting the power of six hundred horses, it is obedient to the hand of a child; its aliment is coal, wood, charcoal, or other combustible; it consumes none while idle; it never tires, and wants no sleep; it is not subject to malady when originally well made, and only refuses to work when worn out with age; it is equally active in all climates, and will do work of any kind; it is a water pumper, a miner, a sailor, a cotton-spinner, a weaver, a blacksmith, a miller, &c., &c.; and a small engine, in the character of a steam-pony, may be seen dragging after it on a railroad a hundred tons of merchandise, or a regiment of soldiers, with greater speed than that of our fleetest coaches. It is the king of machines, and a permanent realisation of the genii of Eastern fable, whose supernatural powers were occasionally at the command of man.”
And what was the greater instrument? The mind of Watt, whose powers were manifested by the creation of this grandest physical instrument. Could such a display of resources, such amazing circumspection of the wants and needs of his machine, and wisdom in the adaptation of its members to the perfect working of the whole, have been given forth from an intellect untrained itself to rule, uninured itself to toil, and to toil with certitude for an end, by persevering collection of all that could increase its aptitude to reach it? The estimate of James Watt’s character by the eloquent Lord Jeffrey, will afford a weighty answer.
“Independently of his great attainments in mechanics, Mr. Watt was an extraordinary, and, in many respects, a wonderful man. Perhaps no individual in his age possessed so much and such varied and exact information—had read so much, or remembered what he had read so accurately and well. He had infinite quickness of apprehension, a prodigious memory, and a certain rectifying and methodising power of understanding, which extracted something precious out of all that was presented to it. His stores of miscellaneous knowledge were immense, and yet less astonishing than the command he had at all times over them. It seemed as if every subject that was casually started in conversation had been that which he had been last occupied in studying and exhausting; such was the copiousness, the precision, the admirable clearness of the information which he poured out upon it without effort or hesitation. Nor was this promptitude and compass of knowledge confined in any degree to the studies connected with his ordinary pursuits. That he should have been minutely and extensively skilled in chemistry and the arts, and in most of the branches of physical science might, perhaps, have been conjectured; but it could not have been inferred from his usual occupations, and, probably, is not generally known, that he was curiously learned in many branches of antiquity, metaphysics, medicine, and etymology, and perfectly at home in all the details of architecture, music, and law. He was well acquainted, too, with most of the modern languages, and familiar with their most recent literature. Nor was it at all extraordinary to hear the great mechanician and engineer detailing and expounding, for hours together, the metaphysical theories of the German logicians, or criticising the measures or the matter of the German poetry.
“His astonishing memory was aided, no doubt, in a great measure, by a still higher and rarer faculty—by his power of digesting and arranging in its proper place all the information he received, and of casting aside and rejecting, as it were instinctively, whatever was worthless or immaterial. Every conception that was suggested to his mind seemed instantly to take its place among its other rich furniture, and to be condensed into the smallest and most convenient form. He never appeared, therefore, to be at all encumbered or perplexed with the verbiage of the dull books he perused, or the idle talk to which he listened, but to have at once extracted, by a kind of intellectual alchemy, all that was worthy of attention, and to have reduced it for his own use to its true value and to its simplest form. And thus it often happened that a great deal more was learned, from his brief and vigorous account of the theories and arguments of tedious writers, than an ordinary student could have derived from the most faithful study of the originals; and that errors and absurdities became manifest from the mere clearness and plainness of his statement of them, which might have deluded and perplexed most of his hearers without that invaluable assistance.”
Such was the activity, industry, discipline, and perseverance in acquirement, of the mind which gave to the world its greatest physical transformer—the instrument which is changing the entire civilization of the world, “doing the work of multitudes, overcoming the difficulties of depth, distance, minuteness, magnitude, wind, and tide; exhibiting stranger wonders than those of romance or magic; annihilating time and space; giving wings even to thought, and sending knowledge like light through the human universe; most mighty, with power that Watt knew not of, and with more than we know, for futurity. The discovery of America,” says the same eloquent writer, W. J. Fox, in his “Lectures to the Working Classes,” “was of matter to be worked upon: this is power to work upon the world.”
COLUMBUS,
Starts before the mind with the enunciation of the sentence just quoted. He whose indomitable perseverance carried his mutinous sailors onward—and onward—across the dreary Atlantic, in a frail bark, until fidelity to his own convictions issued in the magnificent proof of their verity, the discovery of the new world. But our space demands that we pass to the incomparable name which towers, alone, above that of James Watt, in the world’s list of the scientific benefactors of mankind; and, perhaps, above all human names in its peerless excellence.