The Humbugs of the World, P. T. Barnum [suggested reading .txt] 📗

time. He was about to crown himself with a diadem of knowledge which would give him a conscious preeminence above every individual of his species who then lived or who had lived in the generations that are passed away. He paused ere he broke the seal of the casket that contained it.”

Was not this introduction enough to stimulate the wonder bump of all the stargazers, until

“Each particular hair did stand on end,
Like quills upon the fretful porcupine?”

At all events, such was the effect, and it was impossible at first to supply the frantic demand, even of the city, not to mention the country readers.

I may very briefly sum up the outline of the discoveries alleged to have been made, in a few paragraphs, so as not to protract the suspense of my readers too long.

It was claimed that the Edinburgh Journal was indebted for its information to Doctor Andrew Grant⁠—a savant of celebrity, who had, for very many years, been the scientific companion, first of the elder and subsequently of the younger Herschel, and had gone with the latter in September, 1834, to the Cape of Good Hope, whither he had been sent by the British Government, acting in conjunction with the Governments of France and Austria, to observe the transit of Mercury over the disc of the sun⁠—an astronomical point of great importance to the lunar observations of longitude, and consequently to the navigation of the world. This transit was not calculated to occur before the 7th of November, 1835 (the year in which the hoax was printed;) but Sir John Herschel set out nearly a year in advance, for the purpose of thoroughly testing a new and stupendous telescope devised by himself under this peculiar inspiration, and infinitely surpassing anything of the kind ever before attempted by mortal man. It has been discovered by previous astronomers and among others, by Herschel’s illustrious father, that the sidereal object becomes dim in proportion as it is magnified, and that, beyond a certain limit, the magnifying power is consequently rendered almost useless. Thus, an impassable barrier seemed to lie in the way of future close observation, unless some means could be devised to illuminate the object to the eye. By intense research and the application of all recent improvements in optics, Sir John had succeeded in securing a beautiful and perfectly lighted image of the moon with a magnifying power that increased its apparent size in the heavens six thousand times. Dividing the distance of the moon from the Earth, viz.: 240,000 miles, by six thousand, we have forty miles as the distance at which she would then seem to be seen; and as the elder Herschel, with a magnifying power, only one thousand, had calculated that he could distinguish an object on the moon’s surface not more than 122 yards in diameter, it was clear that his son, with six times the power, could see an object there only twenty-two yards in diameter. But, for any further advance in power and light, the way seemed insuperably closed until a profound conversation with the great savant and optician, Sir David Brewster, led Herschel to suggest to the latter the idea of the readoption of the old fashioned telescopes, without tubes, which threw their images upon reflectors in a dark apartment, and then the illumination of these images by the intense hydro-oxygen light used in the ordinary illuminated microscope. At this suggestion, Brewster is represented by the veracious chronicler as leaping with enthusiasm from his chair, exclaiming in rapture to Herschel:

“Thou art the man!”

The suggestion, thus happily approved, was immediately acted upon, and a subscription, headed by that liberal patron of science, the Duke of Sussex, with £10,000, was backed by the reigning King of England with his royal word for any sum that might be needed to make up £70,000, the amount required. No time was lost; and, after one or two failures, in January 1833, the house of Hartley & Grant, at Dumbarton, succeeded in casting the huge object-glass of the new apparatus, measuring twenty-four feet (or six times that of the elder Herschel’s glass) in diameter; weighing 14,826 pounds, or nearly seven tons, after being polished, and possessing a magnifying power of 42,000 times!⁠—a perfectly pure, spotless, achromatic lens, without a material bubble or flaw!

Of course, after so elaborate a description of so astounding a result as this, the Edinburg Scientific Journal (i.e., the writer in the “New York Sun”) could not avoid being equally precise in reference to subsequent details, and he proceeded to explain that Sir JohnHerschel and his amazing apparatus having been selected by the Board of Longitude to observe the transit of Mercury, the Cape of Good Hope was chosen because, upon the former expedition to Peru, acting in conjunction with one to Lapland, which was sent out for the same purpose in the eighteenth century, it had been noticed that the attraction of the mountainous regions deflected the plumb-line of the large instruments seven or eight seconds from the perpendicular, and, consequently, greatly impaired the enterprise. At the Cape, on the contrary, there was a magnificent tableland of vast expanse, where this difficulty could not occur. Accordingly, on the 4th of September, 1834, with a design to become perfectly familiar with the working of his new gigantic apparatus, and with the Southern Constellations, before the period of his observations of Mercury, Sir John Herschel sailed from London, accompanied by Doctor Grant (the supposed informant,) Lieutenant Drummond, of the Royal Engineers, F.R.A.S., and a large party of the best English workmen. On their arrival at the Cape, the apparatus was conveyed, in four days’ time, to the great elevated plain, thirty-five miles to the N.E. of Cape Town, on trains drawn by two relief-teams of oxen, eighteen to a team, the ascent aided by gangs of Dutch boors. For the details of the huge fabric in which the lens and its reflectors were set up, I must refer the