When Jack was urged to do the same he resolutely shook his head, and then turned about and accepted a weapon from the captain, who seemed in the mood for humoring every whim of the youths that afternoon.
"Take it along, Jack," he said; "there may be some tigers, leopards, boa-constrictors, and hyenas prowling about on the ice. They may be on skates, and there is nothing like being prepared for whatever comes. Good luck to you!"
Rob placed himself in the bow of the small boat, and Fred in the stern, while the sailor, sitting down near the middle, grasped the oars and rowed with that long, steady stroke which showed his mastery of the art. There was little wind stirring, and the waves were so slight that they were easily ridden. The sea was of a deep green color, and when the spray occasionally dashed over the lads it was as cold as ice itself. By this time the iceberg had drifted somewhat to the southward, but its progress was so slow as to suggest that the two currents which swept against it were nearly of the same strength. Had it been earlier in the day it would probably have remained visible to the "Nautilus" until sunset.
Meanwhile, a fourth mass rose to sight in the rim of the eastern horizon, so that there seemed some truth in Rob's suggestion that they had run into a school of them. They felt no interest, however, in any except the particular specimen before them.
How it grew upon them as they neared it! It seemed to spread right and left, and to tower upward toward the sky, until even the reckless Rob was hushed into awed silence and sat staring aloft, with feelings beyond expression. It was much the same with Fred, who, sitting at the stern, almost held his breath, while the overwhelming grandeur hushed the words trembling on his lip.
The mass of ice was hundreds of feet in width and length, while the highest portion must have been, at the least, three hundred feet above the surface of the sea. What, therefore, was the bulk below. Its colossal proportions were beyond imagination.
The part within their field of vision was too irregular and shapeless to admit of clear description. If the reader can picture a mass of rock and débris blown from the side of a mountain, multiplied a million times, he may form some idea of it.
The highest portion was on the opposite side. About half-way from the sea, facing the little party, was a plateau broad enough to allow a company of soldiers to camp upon it. To the left of this the ice showed considerable snow in its composition, while, in other places, it was as clear as crystal itself. In still other portions it was dark or almost steel blue, probably due to some peculiar refraction of light. There were no rippling streams of water along and over its side, for the weather was too cold for the thawing which would be plentiful when it struck a warmer latitude.
But there were caverns, projections, some sharp, but most of them blunt and misshapen, steps, long stretches of vertical wall as smooth as glass, up which the most agile climber could never make his way.
Courageous as Rob Carrol unquestionably was, a feeling akin to terror took possession of him when they were quite near the iceberg. He turned to suggest to Jack that they had come far enough, when he observed that the sailor had turned the bow of the boat to the right, though he was still rowing moderately.