3 refer to the depletion of the classes in technical schools, first, by widespread volunteering for the army and, second, by conscription. This subject received much attention at the Washington meeting, on the 6th and 7th inst, of the Society for the Promotion of Engineering Education, an organization of twenty-five and navy, and a few prominent practicing engineers. The secretary of war, the chief of engineers of the U. S. army and the director of the bureau of standards. The live sessions held by the society on those two days were devoted almost exclusively to questions of public welfare, principally connected with the war, its subsequent conditions, and its anticipated problems. Work After the War As I attended the sessions from start to finish and took the deep interest in the entire proceedings, I feel justified in making the following statements, and in claiming that they express the opinions of a number of the most profound thinkers of America; First. The larger part of the civilized world will have to be reconstructed after the war, not excluding our own great railroad system, which undoubtedly will have deteriorated on account of over-use and lack of adequate upkeep. Second. Such reconstruction is almost exclusively the work of engineers. 