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Updated: June 8, 2025
"Still," said Jack, "it is difficult to see how this result is effected by disorder." "True; and, therefore, we must rely upon the skill of the captain; we behold nothing but uproar, but we know that all is governed by the most perfect discipline. So it is with the world; society is a ship, men and their passions are the mast, sails, rigging, the anchors, quadrants, and sextants of Providence.
Very often, as the old maxim goes, the simplest things are the most startling, and that, too, from their very simplicity. So cherish no alarms, if thus we addressed the setting sun "Be thou, old pilot, our guide!" But thoughts of sextants and quadrants were the least of our cares.
"He is alone, collected, thoughtful, and tranquil, his eye fixed upon a chart. Now he observes the position of the sun, and marks the meridian; then he examines the compass, and notes the polary deviation. On all sides are sextants, quadrants, and chronometers. He quietly issues an order, which is echoed and repeated above, and thus augments the babel on deck."
Behind them there is a beautiful park, which extends over the undulating and rising ground in the rear; and on the summit of one of the eminences there is the famous Greenwich Observatory, on the precision of whose quadrants and micrometers depend those calculations by which the navigation of the world is guided.
The captain and first lieutenant were standing on the gangway in converse, and the majority of the officers were with their quadrants and sextants ascertaining the latitude at noon. The decks were white and clean, the sweepers had just laid by their brooms, and the men were busy coiling down the ropes.
You immediately see four luminous quadrants and a dim cross, which becomes gradually blacker, by comparison with the adjacent brightness. And as, in the case of pressure, we produced colours, so here also, by the proper application of heat, gorgeous chromatic effects may be evoked.
It would also be a pleasant task to investigate the properties of the gnomon of the Chinese, Egyptians, and Peruvians, the scarphie of Eratosthenes, the astrolabe of Hipparchus, the parallactic rules of Ptolemy, Regimontanus Purbach, and Walther, the sextants and quadrants of Tycho Brahe, and the modifications of these various instruments, the invention and use of which, from century to century, bringing us at last to the telescopic age, or the days of Lippershay, Jannsen, and Galileo.
For the astronomers Ptolemy Euergetes placed in the Square Porch an equinoctial and a solstitial armil, the graduated limbs of these instruments being divided into degrees and sixths. There were in the observatory stone quadrants, the precursors of our mural quadrants. On the floor a meridian line was drawn for the adjustment of the instruments. There were also astrolabes and dioptras.
Around her lay heaps of books, globes, quadrants, telescopes, and other learned apparatus; her snuff-box stood at her right hand: at her left hand lay her handkerchief, sufficiently used, and a convenience to spit in appeared on one side of her chair.
He went on, meanwhile, earning bread for his family by making and selling quadrants, making and mending fiddles, flutes, and musical instruments; measuring mason-work, surveying roads, superintending the construction of canals, or doing anything that turned up, and offered a prospect of honest gain.
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