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____ 11 Multiply the sum by 5 ____ 55 To which add 10 And the number of the left hand 2 ____ 67 Which being multiplied by 10 ____ 670 To which add the number of the thumb 1 ____ 671 And multiply again by 10 ____ 6710 Then add the number of the joint 2 And lastly the number 35 ____ 6747 From which deducting 3535 ____ The remainder is 3212 ____ Of which, as we have said, the 3 denotes the third person, the 2 the left hand, the 1 the thumb, and the last 2 the second joint. _The Water Sun._ Provide two portions of a hollow sphere, that are very shallow; join them together in such a manner that the hollow between them be very narrow. Fix them vertically to a pipe from whence a jet proceeds. Bore a number of small holes all around that part where the two pieces are joined together. The water rushing through the holes will form a very pleasing water sun, or star. _The Magical Cascade._ Procure a tin vessel, shaped like Fig. 5, about five inches high and four in diameter, with a cover, C, closed at top. To the bottom of this vessel, let the pipe D E be soldered. This pipe is to be ten inches long, and half an inch in diameter, open at each end, and the upper end must be above the water in the vessel. To the bottom also fix five or six small tubes, F, about one-eighth of an inch in diameter. By these pipes, the water in the vessel is to run slowly out. [Illustration: Fig. 5.] Place this machine in a tin basin, G H, w
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