Assuming that administrators of industrial education are interested in the welfare of factory workers,--something often apart from instilling technical skill and knowledge,--it will be necessary for them to provide courses for men and especially for women workers, giving instruction in the laws of health with which every employee in factory life should be familiar. In England the memoranda of the British Health of Munition Workers Committee have demonstrated conclusively the great necessity of this teaching of hygiene: that the causes of ill health of workers in munitions factories were not alone the result of fatigue from long hours, but quite as much the result of insufficient or ill-prepared food, inadequate sleep and ill-ventilated sleeping quarters, and failure to appreciate the consequences of disregarding safety devices. It may not be amiss in this chapter to say a word about our government naval schools, for some may not be aware that the government has for a number of years been maintaining a very efficient system of trade education. The purpose of the naval trade schools is to train young men for various trades or occupations required on shipboard. In going over the list it is likely that administrators of industrial education will see an opportunity to connect the work of their schools with the work of the naval schools. In addition to the practical instruction given at the training stations where these schools are located, a course of academic instruction is conducted throughout the naval service. This instruction does not stop at the training station, but continues on shipboard, and every encouragement is given for advancement. Electrical schools are located at the Brooklyn Navy Yard and at Mare Island, California. The course of instruction comprises machine-shop work, reciprocating steam engines, steam-turbine engines, internal-combustion engines, magnetism and electricity, dynamos, motors, motor generators, alternating-current batteries, etc. Members of the radio class are trained in the duties of a radio operator and are given constant practice in the use of the mechanism employed in recovering and sending messages. The artificer school is located at the Norfolk Navy Yard, and is composed of classes for shipwrights, ship-fitters, blacksmiths, and painters. The machinist and coppersmith schools are located at Charleston, South Carolina, and are open only to reënlisted men who have certain experience. The aëronautics school is located at Pensacola, Florida, and is divided into two courses: mechanics of aëronautics, and flying. Gasoline-engine instruction is given at Charlestown Navy Yard in connection with the machinist's school, preference being given to reënlisted men. Commissary schools for ships' cooks, bakers, and stewards are located at San Francisco and Newport. Musicians' schools are maintained at Norfolk, at Great Lake, Illinois, and at San Francisco.