With quick, nervous fingers they fastened their straps, and then rushed down along the foot of the hummock as though on a race, Tug carrying one of the drag-ropes. The tracks could be followed easily enough until they left the good ice and turned in towards the hummock, where they came to an end, which looked as though Jim might have taken off his skates. Here the boys hallooed, then climbed to the top of a great, upturned table of blue ice, and called again. But the most complete silence followed their words—such a silence as can never be known on land among the creaking trees or rustling grass; an absolute, painful stillness. Not even an echo came back.
At this they were puzzled and frightened, and Katy wanted to cry, but fought back her tears. They descended, and went slowly onward, now and then getting upon elevated points, and calling. At last they stopped, utterly at their wits' end where or how to search next, and Katy's tears rolled down her cheeks unchecked.
"Cheer up, Sis," said Aleck, and took her hand in his as they skated slowly onward; "cheer up! we'll try again on that big block ahead."
This block overlooked a broader part of the hummock, and wasn't far from land. They struggled over the jagged border, and hoisted Katy upon it to see what she could see.
"Nothing," was her report; "nothing but ice, and ice, and ice, and a gray edge of marsh. Oh, Jim! Jim! where are you?"
"Here—help me out."
Each looked at the other in amazement, for the voice, though faint, seemed right beside them.
"Here, down between the cakes—help me out."
The words came distinctly, and gave them a clew. Katy peeped over the farther edge of the block, and there she saw the little fellow's face peering up at her out of the greenish light of a sort of pit into which he had fallen. Two great cakes of ice had been thrown up side by side, leaving a space about two feet wide and ten feet deep between them. The blowing snow that filled most of the crevices of the hummock had here formed a bridge, which had let Jim through when he stepped upon it, never suspecting the chasm it concealed.
"Hurt?" asked Tug.