James Fox, the founder of the Derby firm of mechanical engineers, was originally a butler in the service of the Rev. Thomas Gisborne, of Foxhall Lodge, Staffordshire. Though a situation of this kind might not seem by any means favourable for the display of mechanical ability, yet the butler's instinct for handicraft was so strong that it could not be repressed; and his master not only encouraged him in the handling of tools in his leisure hours, but had so genuine an admiration of his skill as well as his excellent qualities of character, that he eventually furnished him with the means of beginning business on his own account. The growth and extension of the cotton, silk, and lace trades, in the neighbourhood of Derby, furnished Fox with sufficient opportunities for the exercise of his mechanical skill; and he soon found ample scope for its employment. His lace machinery became celebrated, and he supplied it largely to the neighbouring town of Nottingham; he also obtained considerable employment from the great firms of Arkwright and Strutt--the founders of the modern cotton manufacture. Mr. Fox also became celebrated for his lathes, which were of excellent quality, still maintaining their high reputation; and besides making largely for the supply of the home demand, he exported much machinery abroad, to France, Russia, and the Mauritius. The present Messrs. Fox of Derby, who continue to carry on the business of the firm, claim for their grandfather, its founder, that he made the first planing machine in 1814,[1] and they add that the original article continued in use until quite recently. We have been furnished by Samuel Hall, formerly a workman at the Messrs. Fox's, with the following description of the machine:--"It was essentially the same in principle as the planing machine now in general use, although differing in detail. It had a self-acting ratchet motion for moving the slides of a compound slide rest, and a self-acting reversing tackle, consisting of three bevel wheels, one a stud, one loose on the driving shaft, and another on a socket, with a pinion on the opposite end of the driving shaft running on the socket. The other end was the place for the driving pulley. A clutch box was placed between the two opposite wheels, which was made to slide on a feather, so that by means of another shaft containing levers and a tumbling ball, the box on reversing was carried from one bevel wheel to the opposite one." The same James Fox is also said at a very early period to have invented a screw-cutting machine, an engine for accurately dividing and cutting the teeth of wheels, and a self-acting lathe. But the evidence as to the dates at which these several inventions are said to have been made is so conflicting that it is impossible to decide with whom the merit of making them really rests. The same idea is found floating at the same time in many minds, the like necessity pressing upon all, and the