Though Siemens was a man of varied powers, and occasionally gave himself to pure speculation in matters of science, his mind was essentially practical; and it was rather as an engineer than a discoverer that he was great. Inventions are associated with his name, not laws or new phenomena. Standing on the borderland between pure and applied science, his sympathies were yet with the latter; and as the outgoing President of the British Association at Southport, in 1882, he expressed the opinion that 'in the great workshop of nature there are no lines of demarcation to be drawn between the most exalted speculation and common-place practice.' The truth of this is not to be gain-said, but it is the utterance of an engineer who judges the merit of a thing by its utility. He objected to the pursuit of science apart from its application, and held that the man of science does most for his kind who shows the world how to make use of scientific results. Such a view was natural on the part of Siemens, who was himself a living representative of the type in question; but it was not the view of such a man as Faraday or Newton, whose pure aim was to discover truth, well knowing that it would be turned to use thereafter. In Faraday's eyes the new principle was a higher boon than the appliance which was founded upon it. Tried by his own standard, however, Siemens was a conspicuous benefactor of his fellow-men; and at the time of his decease he had become our leading authority upon applied science. In electricity he was a pioneer of the new advances, and happily lived to obtain at least a Pisgah view of the great future which evidently lies before that pregnant force. If we look for the secret of Siemens's remarkable success, we shall assuredly find it in an inventive mind, coupled with a strong commercial instinct, and supported by a physical energy which enabled him to labour long and incessantly. It is told that when a mechanical problem was brought to him for solution, he would suggest six ways of overcoming the difficulty, three of which would be impracticable, the others feasible, and one at least successful. From this we gather that his mind was fertile in expedients. The large works which he established are also a proof that, unlike most inventors, he did not lose his interest in an invention, or forsake it for another before it had been brought into the market. On the contrary, he was never satisfied with an invention until it was put into practical operation. To the ordinary observer, Siemens did not betray any signs of the untiring energy that possessed him. His countenance was usually serene and tranquil, as that of a thinker rather than a man of action; his demeanour was cool and collected; his words few and well-chosen. In his manner, as well as in his works, there was no useless waste of power.