Calendar: 1880-1881 Page 166

166 APPLIED SCIENCES GEOMETRICAL DRAWING The course comprises the following subjects Practical Plane Geometry -The delineation of the curves required in the Arts such as the Ellipse Cycloid Epicycloid Involutes Spirals The construction of Polygons and mixed figures having an axis of symmetry The construction of Scales plain and diagonal &c Practical Solid Geometry -The deduction of projections of solids in more complicated positions from simpler by the transformation of the co-ordinate planes The mode of re- presenting surfaces by the projection of their generatrices or by contours and of determining tangent and normal planes by means of them The development of ruled surfaces admitting it and of lines lying on them The determination of Shadows by orthogonal or radiating rays on plane and curved surfaces The intersection of surfaces and Problems on the lines of double curvature resulting from them The principles of Perspective or Radial Projection The Course-Book is the Elements of Practical Geometry 55 published by the Council of Education and written by the late Professor Bradley ARCHITECTURAL ENGINEERING AND MECHANICAL DRAWING Elementary Exercises of the Course -The enlargement and reduction to various scales of examples from acknowledged works of merit principally of modern construction and drawings to scale from rough figured sketches until the Student shows sufficient neatness accuracy and general know- ledge of the subject to render him of some service in the office of an Architect or Engineer Architectural Drawing -The Student will then make working drawings for the construction of Roofs Floors and general details of buildings in conformity with modern practice