His extraordinary mental activity is shown in the fact that between 1845 and 1883 no less than 133 patents were granted in England to the Messrs. Siemens, 1846 and 1851 being the only years in which none were taken out. During the same period he contributed as many as 128 papers on scientific subjects to various journals, only three years in this case also being without such evidences of work, and in 1882 the number of these papers reached seventeen, the average being about seven patents and original scientific papers per year for more than the third of a century, a truly wonderful record of untiring industry. To show the impression his work made upon the world, I quote the following passage from the many which appeared in the newspapers at the time of his death. It is headed: ONE MAN’S INTELLECT. Siemens telegraph wires gird the earth, and the Siemens cable steamer _Faraday_ is continually engaged in laying new ones. By the Siemens method has been solved the problem of fishing out from the stormy ocean, from a depth comparable to that of the vale of Chamounix, the ends of a broken cable. Electrical resistance is measured by the Siemens mercury unit. “Siemens” is written on water meters, and Russian and German revenue officers are assisted by Siemens apparatus in levying their assessments. The Siemens process for silvering and gilding, and the Siemens anastatic printing, mark stages in the development of these branches of industry. Siemens differential regulators control the action of the steam-engines that forge the English arms at Woolwich, and that of the chronographs on which the transits of the stars are marked at Greenwich. The Siemens caststeel works and glasshouses, with their regenerative furnaces, are admired by all artisans. The Siemens electric light shines in assembly-rooms and public places, and the Siemens gas light competes with it, while the Siemens electro-culture in greenhouses bids defiance to our long winter nights. The Siemens electric railway is destined to rule in cities and tunnels. The Siemens electric furnace, melting three pounds of platinum in twenty minutes, was the wonder of the Paris Exposition, which might well have been called an exposition of Siemens apparatus and productions, so prominent were they there.