Descriptive geometry includes the orthographic projections of the right line, the plane, ruled surfaces and surfaces of revolution, tangent planes and intersections of surfaces. It also takes the subjects of shades and shadows, perspective, isometric projections and spherical projections. The course in differential and integral calculus covers the ground of the usual college textbook, including briefly the subject of ordinary differential equations. TEXTBOOKS Elements of Geometry. Phillips and Fisher. Advanced Course in Algebra. Wells. Quadratics and Beyond. Fisher and Schwatt. Elements of Plane and Spherical Trigonometry. Crockett. Logarithmic Tables. Newcomb. Conic Sections, Coördinate Geometry. C. Smith. Coördinate Geometry. Fine and Thompson. Elements of Analytical Geometry (Solid). Smith and Gale. Descriptive Geometry. Church. Linear Perspective. Pillsbury. Differential and Integral Calculus. Granville. Integral Calculus. D. A. Murray. Differential Equations. D. A. Murray. Method of Least Squares. Johnson. DEPARTMENT OF CHEMISTRY, MINERALOGY AND GEOLOGY SECOND CLASS This department embraces two branches of physics not included in its title, namely heat and electricity. The course begins September 1st of the third academic year and extends throughout this year; exercises, recitations, laboratory work or lectures take place on all week days. Commencing September 1st, general chemistry, alternating with lessons in heat, occupy the time until the close of the term in December, recitations or other exercises being had daily. During this term all members of the class whose progress, as shown by their recitations, warrants it, are given laboratory practice in chemistry. This practice begins with chemical manipulations and proceeds in the usual general order of elementary laboratory work. The laboratory exercises are one hour and fifty minutes long. It is generally possible to give all parts of the class some laboratory experience; the amount of this work, however, varies with the aptitude of the student from a few hours to forty-five or fifty hours. This term closes with an examination upon the essential parts of the entire course, which all cadets who have not shown a required proficiency in daily work must take. In chemistry the course is a descriptive general one, based upon a concise statement of the more essential principles of chemistry, and includes that class of information deemed most important to non-specialists, together with an accurate and logical treatment of many useful applications of chemistry. The course in heat is short, but it is a comprehensive elementary course intended to embrace what is most applicable to subsequent work at the academy and what is most useful in general education.