Mechanics, strength of materials, and mechanical design 70
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Total 560

The enrollment in the school conducted by the New York Central
Railroad is about 140 boys, nearly all of whom are machinists'
apprentices. They are divided into three classes, the members of each
class attending the school four hours a week. About two-thirds of the
time is devoted to mechanical drawing and one-third to mathematics and
shop practice. The instruction in these two latter subjects is based
on a series of graded mimeographed or blue print lesson sheets,
containing a wide variety of shop problems, with a condensed and
simplified explanation of the mathematical principles involved. In the
main the work is limited to the application of simple arithmetic to
problems of shop practice. No textbooks are used, but the booklets on
machine shop practice published by the International Correspondence
Schools are studied in connection with the course.

In addition to the required classroom work in mechanical drawing, each
apprentice serves four or five months of his term in the regular
drafting rooms of the company. The classroom is equipped with models
of railway appliances and machinery, together with laboratory
apparatus for teaching the laws of mechanics. No machine tools or
other shop equipment are used in the classes. The course covers about
700 hours of instruction exclusive of the time spent in regular
drafting room work. About 20 apprentices finished the course in 1915.

Several of the building and printing trades' labor unions take an
active interest in the training of apprentices, and in at least two
instances the unions maintain evening classes for teaching trade