years later by Le Chatelier to construct a thermocouple for the measurement of temperature in metallurgical processes. Applying these two instruments of research, metallurgists have now a clear idea of the structure of the more important metals and alloys used in industry and of the manner in which the properties which fit them for their various uses are related to that structure. The intensive study of pure science, the determined effort to hand on still brightly burning the lamp lighted for us by those who have gone, is perhaps the best contribution which Cambridge now can make to our national welfare.
"Science," writes Professor Bragg, "grows like a tree which shoots out new branches continually and at the same time strengthens the old; twigs become boughs and the boughs become great stems, while the tree is ever growing upwards towards the light and more
