rifle ball

At the same moment, the fire was once more opened from the woods, and a rifle ball sang through the doorway and knocked the doctor's musket into bits.

The instant that its entire length was within the black aperture it sprang forward with the speed of a rifle ball. There was an instant of whizzing--a soft, though sudden, stop, and slowly the carrier emerged upon another platform, another attendant raised the lid and Vas Kor stepped out at the station beneath the centre of Greater Helium, seventy-five miles from the point at which he had embarked.

The Indians had by this time discovered that I was alone and I was pursued with imprecations, arrows, and rifle balls. The fact that it is difficult to aim anything but imprecations accurately by moonlight, that they were upset by the sudden and unexpected manner of my advent, and that I was a rather rapidly moving target saved me from the various deadly projectiles of the enemy and permitted me to reach the shadows of the surrounding peaks before an orderly pursuit could be organized.