A text book of geometrical drawing, for the use of mechanics and schools, in which the definitions and rules of geometry are familiarly explained (1849)
epending on the intensity of the light from which it iscast, and its distance from the object; the student may derivemuch information from observing the shading and shadows ofobjects from artificial light, as he can vary the angle, object andplane of projection at pleasure. 9th. The extent of a… … Fz^. J Ficf. o / __i:_ G Q 0 O o 0 ^ o -X Fz^. 4
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