This course consists of three hours a week of work in the Metallographic Laboratory. The subject matter includes the determination of critical points; calibration of thermo-couples; study of gas and electric heat treating furnaces, and the effect of heat treatment on steels, brasses and alloys of aluminum. The student is required to prepare specimens for microscopic examination to study them under the microscope and photograph them in order to determine whether or not he has secured the required structures in heat treatment. The change in such physical properties as hardness is also studied. This course emphasizes the fact that microscopic examination is a valuable adjunct rather than a purely laboratory procedure. _Text: Woldman, “Physical Metallurgy”._ ME 30 Thermodynamics. Prerequisites, Math 21, Phys 3. A Junior Course for mechanical engineering students. The thermodynamic theory of gases and vapors is studied with respect to both source of energy and the methods of making it available. The subject matter includes a study of energy and its availability; the properties of gases and vapors; energy changes during expansions and compressions; the various ideal cycles for converting heat into work; and the general theory of the flow of fluids. A lecture, recitation and problem course. _Text: Barnard, Ellenwood, Hirshfeld, “Heat Power Engineering”, Vol. 1; Keenan and Keys, “Steam Tables”._ ME 31 Thermodynamics. Prerequisites, Math 21, Phys 3. A Junior Course for non-mechanical engineering students. The thermodynamic theory of gases and vapors is studied with respect to both source of energy and the methods of making it available. The subject matter includes the properties of gases and vapors; energy changes during expansions and compressions; and the various ideal cycles for converting heat into work. A recitation and problem course. _Text: Faires, “Elementary Thermodynamics”; Keenan and Keys, “Steam Tables”._ ME 34 Heat Power. Prerequisite, ME 30. This course consists of applying the principles of thermodynamics to heat power problems. The subject matter covered includes combustion, heat transfer, steam engine principles, air compressors, air engines and refrigeration. The laboratory work includes fuel and oil testing and studies and tests of instruments and apparatus used in heat power engineering and the flow of fluids. _Texts: Barnard, Ellenwood, Hirshfeld, “Heat Power Engineering”, Vol. 1, 2, 3; Shoop and Tuve, “Mechanical Engineering Practice”. Department Notes._ ME 36 Power Plants. Prerequisite, ME 34.