Construction work in cardboard and paper for grades I to IV, without the use of tools; with a course in woodwork for the fifth grade (1900)
Smith, Robert Mackie, comp · Chicago, A. Flanagan Co · leaf 71
on planes and to show thatall the faces which are in the same plane or in a parallelplane, receive an equal distribution of light or shade. Fig. 25. A flat parallelopiped pierced by a long paral-lelopiped. Fig. 26. Cube of 3x3x3, from which is cut out thecross with six arms, as in Fig. 24. Fig. 27.… … 29 30
Paper work
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