after the zodiacal constellations had disappeared in the mists that hung round the horizon, one by one the stars above our heads were veiled in dark rolling masses of vapor, from which every instant there issued forth sheets of electricity that formed a vivid background to the dark gray fragments of cloud that floated beneath.
Sleep, even if we wished it, would have been impossible in that stifling temperature. The lightning increased in brilliancy and appeared from all quarters of the horizon, each flash covering large arcs, varying from 100° to 150°, leaving the atmosphere pervaded by one incessant phosphorescent glow.
The thunder became at length more and more distinct, the reports, if I may use the expression, being "round," rather than rolling. It seemed almost as though the sky were padded with heavy clouds of which the elasticity muffled the sound of the electric bursts.
Hitherto, the sea had been calm, almost stagnant as a pond. Now, however, long undulations took place, which the sailors recognized, all too well, as being the rebound produced by a distant tempest. A ship, in such a case, would have been instantly brought ahull, but no maneuvering could be applied to our raft, which could only drift before the blast.
At one o'clock in the morning one vivid flash, followed, after the interval of a few seconds, by a loud report of thunder, announced that the storm was rapidly approaching. Suddenly the horizon was enveloped in a vaporous fog, and seemed to contract until it was close around us. At the same instant the voice of one of the sailors was heard shouting:
"A squall! a squall!"
CHAPTER XXXV
TWO SAILORS WASHED OVERBOARD
December 21, night.—The boatswain rushed to the halliards that supported the sail, and instantly lowered the yard; not a moment too soon, for with the speed of an arrow the squall was upon us, and if it had not been for the sailor's timely warning we must all have been knocked
