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Scientific American, Vol. 40, No. 16 (1879) (1879)
leaf 7
d cage support, which consists of a spring-acted The instrument may be readily adjusted to any length of | lock is engaged with either or both of the rings, as shown in drum, on which is wound the cord which supports the cage. step, from 17 to 85 inches, the varying scale on the dial be- | Fig. 8.… … the trees in the bending, crouch- weight with the shade ring. © 1879 SCIENTIFIC AMERICAN, INC.Internet Archive · Public domain (published before 1931). Free to use for anything.
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