. Cassier's magazine. tthe twig from turning in the hands ofthe diviner as he stands over the sub-terranean stream. The picture and text suggest forciblythe unscientific nature of such tests asusually conducted. The two gentlemenare on the two sides of the operator,each holding with one hand a pair ofpincers, nipping the end of a branch ofthe forked twig, each branch being 2-3 firmly grasped by the full hand of theoperator. The annexed diagram illus-trates the mechanical situation. The photograph does not show whatkind of pincers was employed, or howthey were applied. From the circum-stance th
. Cassier's magazine. tthe twig from turning in the hands ofthe diviner as he stands over the sub-terranean stream. The picture and text suggest forciblythe unscientific nature of such tests asusually conducted. The two gentlemenare on the two sides of the operator,each holding with one hand a pair ofpincers, nipping the end of a branch ofthe forked twig, each branch being 2-3 firmly grasped by the full hand of theoperator. The annexed diagram illus-trates the mechanical situation. The photograph does not show whatkind of pincers was employed, or howthey were applied. From the circum-stance that they are completely hiddenin the picture by the hands holdingthem, it may be inferred that they weresmall instruments with flat jaws, such asare used for twisting wire. Moreover,the picture intimates that the forkedstick had no bark on it. At all events,it is evident that this is a case of apply-ing a brake on the axle of revolution(the place where it can have the smallesteffect), and of giving to this brake the oO. THE OPERATORS POSITION IS MARKED O; ARE THE POSITIONS OF THE TWO MEN HANDLING THE PINCERS p p: T IS THE TIP OF THE FORKED TWIG; AND Jl ll ARE THE POSITIONS OF THE OPERATORS HANDS smallest surface of contact with the axle,—to wit, a short line of tangency to thecurved surface,—while the fingers of theoperator clasp the entire circumferenceof the same axle. In other words, theresisting force is reduced to its smallest 113 li4 CASSIERS MAGAZINE
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Keywords: ., bookcentury1800, bookdecade1890, bookpublishernewyork, booksubjec
