St. Mark's rest : the history of Venice written for the help of the few travellers who still care for her monuments (1885)
Ruskin, John, 1819-1900 · New York : Lovell · leaf 401
H 72 THE ELEMENTS OF PERSPECTIVE, Now if the vertical altitude of the pyramid (c d in Fig. 25.)be given, make v g equal to this vertical altitude. Join G B and g h. Then g b and g h are the true magnitudes of g b and g h inFig. 56. If G b is given, and not the vertical altitude, with centre b,and… … Fig. 58. If g H is given, describe the circle from h, with distance g h,and it will similarly cut f g in g. It is especially necessaiy for the student to examine thisconstruction thoroughly, because in many complicated formsof omament-s, capitals of columns, &c., the lines b g and g hbecome the…
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