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 To the astonishment of all who knew him, it was discovered, after his death, that he was possessed of considerable wealth—about £6000. 'Ferguson,' says Charles Hutton in his Mathematical Dictionary, 'must be allowed to have been a very uncommon genius, especially in mechanical contrivances and inventions, for he constructed many machines himself in a very neat manner. He had also a good taste in astronomy, as well as in natural and experimental philosophy, and was possessed of a happy manner of explaining himself in a clear, easy, and familiar way.

His general mathematical knowledge, however, was little or nothing. Of algebra he understood little more than the notation; and he has often told me that he could never demonstrate one proposition in Euclid's Elements; his constant method being to satisfy himself as to the truth of any problem with a measurement by scale and compasses.' He was a man of very clear judgment in everything that he professed, and of unwearied application to study: benevolent, meek, and innocent in his manners as a child: humble, courteous, and communicative: instead of pedantry, philosophy seemed to produce in him only diffidence and urbanity. After a long and useful life, worn out with study, age, and infirmities, he died November 16, 1776.

SIR WILLIAM HERSCHEL.

The science of astronomy, which, from the time of Copernicus, had been gradually improving, through the laborious exertions of Tycho Brahè, Galileo, Kepler, Hüygens, Newton, Halley, Delisle, Lalande, and other eminent observers of the starry firmament, was considerably advanced by the discoveries of Herschel, whose biography now comes under our notice.

William Herschel was born at Hanover on the 15th of November 1738. He was the second of four sons, all of whom were brought up to their father's profession, which was that of a musician. Having at an early age shown a peculiar taste for intellectual pursuits, his father provided him with a tutor, who instructed him in the rudiments of logic, ethics, and metaphysics, in which abstract studies he made considerable progress. Owing, however, to the circumscribed means of his parents, and certain untoward circumstances, these intellectual pursuits were soon interrupted, and at the age of fourteen he was placed in the band of the Hanoverian regiment of guards, a detachment of which he accompanied to England about the year 1757 or 1759. His father came with him to England, but after the lapse of a few months, he returned home, leaving his son, in conformity with his own wish, to try his fortune in Great Britain—the adopted home of many an ingenious foreigner. How or when he left the regimental band in which he had been engaged, we are not informed. After struggling with innumerable difficulties, and no doubt embarrassed by his comparative ignorance of the English tongue, he had the good fortune to attract the notice of the Earl of Darlington, who engaged him to superintend and instruct a military hand at the time forming for the Durham militia. After fulfilling this engagement, he passed several years in Yorkshire, in the capacity of teacher of music. He gave lessons to pupils in the principal towns, and officiated as leader in oratorios or concerts of sacred music -a kind of employment in which the Germans are eminently skilled, from their love of musical performances. Herschel, however, while thus en