STEEL THREE HUNDRED TIMES DEARER THAN GOLD.
Steel may be made three hundred times dearer than standard gold, weight
for weight; six steel wire pendulums, weight one grain, to the artists
7s. 6d. each, 2l. 5s.; one grain of gold only 2d.
The Mirror of Literature, Amusement, and Instruction. Volume 17, No. 480, March 12, 1831 · 第 29 / 40 题