Scientific amusements . m to be solvedis this. Place the twelve pieces in the box in such amanner that, they will remain immovable, and will notfall out even when the box is turned upside down withoutthe lid. The solution consists in placing th^ discs tangentially,and the puzzle can be performed by arranging them as|shown in the cut above (Fig. 89). All the men , thus[isustain each other by gentle pressure, and the box mayfbe shaken without any one of them falling out. Toperform this puzzle one must understand, in some mea- I 12 MATHEMATICAL GAMES. sure, the packers secret (see Fig. 89). We pl
Scientific amusements . m to be solvedis this. Place the twelve pieces in the box in such amanner that, they will remain immovable, and will notfall out even when the box is turned upside down withoutthe lid. The solution consists in placing th^ discs tangentially,and the puzzle can be performed by arranging them as|shown in the cut above (Fig. 89). All the men , thus[isustain each other by gentle pressure, and the box mayfbe shaken without any one of them falling out. Toperform this puzzle one must understand, in some mea- I 12 MATHEMATICAL GAMES. sure, the packers secret (see Fig. 89). We place one disc(No. i) in the centre, and dispose around it six otherdiscs, 2, 3, 4, 5, 6, 7. Steady these with the left hand,so that they will not move except en bloc, and then insertthe remaining pieces 8, 9, 10, 11, 12 around them, nextthe circumference of the box. Then remove the discNo. I from the central place, and put it where i isresting. The twelve discs will then remain firm in theirplaces. The puzzle is solved !. CHAPTER X.—NATURAL SCIENCE IN THECOUNTRY. >HE manner of constructing an aquarium hasalready been described, but we will here showa charming apparatus which will be bothaviary and aquarium combined. Procure alarge melon-glass, as shown in Fig. 91, page 114; and intoit introduce a cylindrical glass vase, in which you have
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Keywords: ., bookcentury1800, bookdecade189, booksubjectscientificrecreations
