The April number of the Harvard Engineering Journal has just been issued. Excepting a paper on "An Underground Limestone Quarry," and one on "Shearing Strength of Concrete Joints," all the leading articles are of interest to undergraduates outside of the field of engineering. The "Remarks on a College Lighting Plant" serves as a beginning for discussion of ways and means of improving the lighting service in the Harvard Yard and buildings nearby. The approximate way of figuring the financial gain must be regarded of course as only preliminary to a more detailed study, but suggests how such problems must be approached.

An article on "The Commercial Side of Engineering," is a timely bit of advice to engineering students by a graduate who ought to know. Its warning against neglect of the commercial factor underlying every engineering project ought to be taken to heart by all Harvard students preparing for specialized scientific professions.

An article on "Engineering as Related to the Incandescent Lamp Industry," reveals the tremendous proportions of this one business and the demand for trained young men to carry it on. The author, himself a Harvard men, feels that more Harvard men should be engaged in this industry. One reason may be ignorance on the part of most undergraduates of the unsurpassed facilities for studying electrical engineering at Harvard.

The most promising part of the issue is the set of personal notes about the doings of graduates in the engineering profession. A glance at this department will show that Harvard men are taking prominent places in this field. Such notes make the Journal a real organ of Harvard affairs and supplements the similar department of the Harvard Graduate Magazine.

Perhaps the most significant feature of this number is that all the articles are written by Harvard graduates, most of them of recent years.