tive the relation of pure science to applied science,—"the worker in pure science discovers, his fellow in applied science utilises,"—teems with illustrations: let me remind you of one or two.
Faraday, when he succeeded in making a wire carrying a current move when in a magnetic field, had no thought of the applications of electro-magnetism to-day, and the question of a visitor, "Tell me, Professor Faraday, and of what use is this new discovery," led to the well-known answer, "Sir, of what use is the new-born child?"
The Röntgen rays, as Professor Thomson has recently pointed out, were studied first as one means whereby we might hope to learn something of the nature of electricity. They are now the surgeon's trusted guide, telling him how to direct his knife and restore his patient to health and strength. Pasteur's
