most dreadful of all human Conditions, the Case of Bankruptcy; how Plenty, Credit, Chearfulness, full Hopes, and easy Possessions, are in an Instant turned into Penury, faint Aspects, Diffidence, Sorrow, and Misery; how the Man, who with an open Hand the Day before could administer to the Extremities of others, is shunned today by the Friend of his Bosom. It would be useful to shew how just this is on the Negligent, how lamentable on the Industrious. A Paper written by a Merchant, might give this Island a true Sense of the Worth and Importance of his Character: It might be visible from what he could say, That no Soldier entring a Breach adventures more for Honour, than the Trader does for Wealth to his Country. In both Cases the Adventurers have their own Advantage, but I know no Cases wherein every Body else is a Sharer in the Success.
It is objected by Readers of History, That the Battels in those Narrations are scarce ever to be understood. This Misfortune is to be ascribed to the Ignorance of Historians in the Methods of drawing up, changing the Forms of a Battalia, and the Enemy retreating from, as well as approaching to, the Charge. But in the Discourses from the Correspondents, whom I now invite, the Danger will be of another kind; and it is necessary to caution them only against using Terms of Art, and describing Things that are familiar to them in Words unknown to their Readers. I promise my self a great Harvest of new Circumstances, Persons, and Things from this Proposal; and a World, which many think they are well acquainted with, discovered as wholly new. This Sort of Intelligence will give a lively Image of the Chain and mutual Dependance of humane Society, take off impertinent Prejudices, enlarge the Minds of those, whose Views are confined to their own Circumstances; and, in short, if the Knowing in several Arts, Professions, and Trades will exert themselves, it cannot but produce a new Field of Diversion, an Instruction more agreeable than has yet appeared.
T.
If this means the Marquis of Worcester, the exact ascertainment of the longitude was not one of his century of Inventions. The sextant had its origin in the mind of
Sir
Isaac Newton, who was knighted in 1705, and living at this time, but its practical inventor was Thomas Godfrey, a glazier at Philadelphia. Godfrey's instrument is said to have been seen by John Hadley, or that English philosopher, after whom the instrument is named, invented it at the same time, about 1730. Honours of invention were assigned to both Godfrey and Hadley. Means of exact observation of the heavenly bodies would not suffice for exact determining of longitude until the sailor was provided with a timepiece that could be relied upon in all climates for a true uniform standard of time. The invention of such a time-piece, for which Parliament offered a reward of £20,000, was the real solution of the difficulty, and this we owe to the Yorkshireman John Harrison, a carpenter and son of a carpenter, who had a genius for clockmaking, and was stimulated to work at the construction of marine chronometers by living in sight of the sea. He came to London in 1728, and after fifty years of labour finished in 1759 a chronometer which, having stood the test of two voyages, obtained for him the offered reward of £20,000. Harrison died in 1776 at the age of 83.