The Bookshelf for boys and girls Book of Wonders and Curious Things (1912)
University Society, New York · New York: University Society · leaf 99
little hard to see these twostairways, and you maysucceed better by turningthe page around whilelooking at the drawing.It is easy, sometimes, tosee objects that do notexist: thus, in Fig. 13, ifthe page is tipped a littleand held so that the righteye looks along the linea b, and the left along… … fig. 8. TRICKS AND MAGIC 85 looked at with one eye from a point where it can them from very early times. Long years ago thelook along all of the lines without moving the Greek architects took advantage of these illu-head,—that is, at a point where all the lines sions to improve the appearance of…
Children's literature · Children's encyclopedias and dictionaries · Literature · Encyclopedias and dictionaries
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