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ther 25 guineas may not now be refused, was disposed of for the trifling sum of £.1. 12s.

Of John Bridges, the celebrated possessor of this excellent library, after examining the pages of our most popular biographers, not excepting Nichols) I am unable to present my readers with any more interesting details than are to be found in Noble's continuation of Granger's Biographical History of England, vol. ii. p. 182.

• John BRIDGES, Esq. of Barton Segrave, in the county of Northampton, was a Solicitor of the customs in 1695; in 1711 a Commissioner of the same duties; and in 1715 Cashier of the Excise; a Bencher of Lincoln's Inn; a Governor of Bethlehem Hospital, and Fellow of the Royal and Antiquarian Societies. Learned himself, he endeavoured to patronise learning in general; and is consequently mentioned with great respect, by Hearne and others; particularly in Sawyer's pre


face to Winwood's Memorials, where he says— For these (letters to Wm. Turnbull, Esq. afterwards Sir William) I stand indebted to my late highly honoured and learned friend, JOHN BRIDGES, Esq. whose incomparable knowledge in all kinds of learning was tempered with that engaging candour and affability, as at once rendered him the delight and wonder of all who had the honour and happiness of his acquaintance. By his untimely death, the world is deprived not only of a most valuable man, but of a work which would have done lasting honour to himself and country. The work thus honourably noticed, was a general history of Northamptonshire*, his native county, and the residence of his ancestors; consisting of 30 volumes of MS. in folio, which he had begun to

* It was not till the year 1791, in consequence of a liberal subscription from the gentlemen of the county, that the world was put in possession of Mr. Bridges's labours—by the publication of the History of Northamptonshire, with maps and views,' in two handsome folio volumes.

methodise, and the expense of collecting which was very considerable.

He died March 16, 1724. The year of his birth is not accurately known. There is a print of him by Vertue, from a painting of Kneller, of the date of 1726. He is represented in a loose robe, large neckcloth, and a flowing peruke.

Royal Institution.

Mr. Davy's third lecture was upon Heat; he pointed out the obvious properties of this great agent, and examined the later facts and discoveries; the radiation of heat was shewn by some appropriate experiments; two mirrors were placed at ten feet distance from each other, one being suspended perpendicularly over the other, some hot coals were placed in the focus of the upper mirror, some fulminating mercury in the focus of the lower mirror. The heat in the last



was sufficiently intense to occasion the explosion of the mercury. A bason of ice was then placed in the focus of the lower mirror, and a thermometer in the focus of the upper mirror, when its temperature was soon lowered in a small degree. In this form of the experiment no communication could take place through the air, for heated air ascends, and cooled air descends. Mr. Davy referred both phenomena to heat sent off from the bodies in right lines; the coals in the first instance throwing off most heat, and the thermometer in the second instance giving off more heat than it received from the ice.

Mr. Davy mentioned the facts lately discovered by Count Rumford and Mr. Leslie, and which prove that the radiating powers of bodies are inversely proportional to their reflecting powers; and directly proportional to their powers of absorbing heat.

On Thursday, 19th February, Mr. Douglas Guest began a course of lee

tures, On the State of the Fine Arts in Spain, and other parts of the Continent. In the course of his lecture, Mr. Guest attributed much to the influence of particular causes in religion and government, operating on the human mind in its gradual approaches towards excellence. His subject then embraced an historical survey of the arts in Spain, with illustrative examples of its progress and decay. The reign of Ferdinand the Catholic, accompanied with a descriptive account of the Alhambra, and some reflections on Moorish art, with that of the succeeding monarchs, Charles V, the five Philips, to Charles III. were successively enumerated. Mr. G. concluded his discourse with stating the objects of his future lectures.

Mr. Wood began his lectures on Monday, with a concise history of perspective, and recommended the study of the science as necessary and useful to the arts in general. He then proceeded to

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