Recreations in science and natural philosophy (1844)
Ozanam, Jacques, 1640-1717. n 93006101, Montucla, Jean Etienne, 1725-1799. n 85800222, Hutton, Charles, 1737-1823. n 84160398, Riddle, Edward, 1788-1854. no2004015425 · London : Thomas Tegg · leaf 576
upper voussoir, fit to receive it entirely : the dove-tail could not then be broken without breaking the upper voussoir also. But it may easily seen that, to produce this effect, an immense force would be required. 2d. But as some persons may condemn the use of iron in works of this kind, we shall… … ties in the lower bed of the voussoir, which is to be placed in connection on the preceding. Then fill the cavities a and c with two globes of very hard marble, and place the upper voussoii in such a manner that these two globes shall fit exactly into the cavities of its lower bed. If this…
Scientific recreations
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