Calendar: 1856-1857 Page 374

APPLIED SCIENCES 375 totmtncal Srafot'ng Make scales plain or diagonal according to the following conditions For yards ft and in one yard represented by 1-25 in For miles and furlongs one mile by 2-42 in Metres decimetres and centimetres 3724 cen- timetree by 284 in Draw an equilateral triangle and inscribe in it equal circles of inch diameter each circle to touch two sides of the triangle and the other two circles Divide line of 3-25 inches in length- Into two segments in the ratio of 27 43 Into extreme and mean proportion Into two segments so that the square on the one shall be double the square on the other Draw the cycloid generated by circle of one such radius Draw plane inclined at 33 and in it place two lines one inclined at 23 another perpendicular to the first and third ine perpendicular to the two former Determine the radius of the sphere that will circumscribe regular tetrahedron of two inches edge Determine by construction the angles of spherical triangle the sides of which are 'ד Prove that equal arcs of radii will subtend angles that are as It VI 5iHarnrfortf Jftrst &Ias8 bct 0lars&ip8 -dftrst ants &uonts i300ks of damutl What descendants of Aaron are mentioned in these Books To which line of descent did they severally belong What do you know as to their character and history