Chapter

 1 Pre |        and should weigh 19,250 pounds. Second, that the gun should
 2 Pre |  charge should contain 400,000 pounds of gun-cotton, which, giving
 3 I   |  projectile are rammed 400,000 pounds of gun-cotton, which is
 4 I   |    which is equal to 1,600,000 pounds of ordinary powder! And
 5 V   |       the power of the 400,000 pounds of gun-cotton, must have
 6 VIII|      Evidently, as two hundred pounds will only weigh thirty pounds
 7 VIII|  pounds will only weigh thirty pounds on the surface of the moon.”~“
 8 VIII|      an object weighing 70,000 pounds on the earth would weigh
 9 VIII|    earth would weigh but 1,920 pounds on the surface of the sun.
10 VIII|        let me see— about 5,000 pounds, a weight which you would
11 XXII| projectile only weighed 19,250 pounds, a weight very inferior
12 XXII|  projectile only weighs 19,250 pounds!”~“Well?”~“And that it displaces
13 XXII|       or in other words 56,000 pounds, and that consequently it