Calendar: 1882-1883 Page 667

664 APPLIED SCIENCES Sketch the cam used for driving the table of platen printing machine and explain fully how the table is brought to rest at the time that the impression is being taken Describe the process of stereotyping by means of papier macho moulds Make sketches of the common anchor and dead-beat scapements and describe their action 10 Sketch section through wet gas meter and explain its construction Geometrical grafting Λ SECOND AND THIRD YEARS Construct regular dodecahedron and divide it into equal triangles in each triangle inscribe circle Describe and illustrate the difference between sector' and segment' of circle Give definition of the hyperbolic curve and describe and illustrate its construction Fix upon two points respectively 75" and 2" above the extremities of line 4" long Draw between them any ir- regular curved line which cannot be reproduced by arcs of circles Draw another straight line in length and repeat the same curved line in due proportion to the increased scale 4- Λ Define the meaning of the term ζ geometry of three dimensions and explain how your definition applies to the projection of point in space The plan and elevation of line are equally inclined to xy but are at unequal distances from it and are not parallel to each other Find the horizontal and vertical traces of the line Draw in plan and elevation any two lines which are oblique to both co-ordinate planes and intersect each other Find the vertical and horizontal traces of plane con- taining both lines Construct an equilateral triangle of 2" side figure the angles 75" and 175 and show the plan and elevation of