"Here comes Father Orin!" cried the doctor. "Look at Toby and my horse; see how they are walking!" The horses could be indistinctly seen advancing slowly and reluctantly through the yellowish gloom with a curious, sliding motion, as if stepping on ice. Paul started toward them, but paused, struck motionless, and held by a sight still more strange. The same breathless stillness brooded over everything; the windless air now weighed like lead, and yet at this moment the greatest trees and smallest bushes suddenly began to quiver from bottom to top. As far as the horror-struck eyes could reach through that unnatural twilight, the mightiest cottonwoods were now bending and nodding like the frailest reeds. And then there arose in the far northeast a faint rumbling which rushed swiftly onward toward the southeast, growing, louder as it came, and breaking over Cedar House in a thunderous roar. At the deafening crash Paul turned and ran back to Ruth, catching her in his arms. The ground was now sliding beneath their feet. The solid earth was waving and rising and falling like a stormy sea. "It's an earthquake," he whispered, with his lips against her cheek. "Don't fear, it will pass." A second shock followed the first, and there was no lightening of the dreadful gloom which was one of the greatest horrors of that horrible time. But the men were rallying now that they knew what they had to meet, and they quickly and firmly drew the terror-stricken, helpless old women further away from the house, fearing that the massive logs of its walls might be shaken down. "That isn't far enough," said Father Orin. "Come still farther," glancing round for the safest refuge. "Merciful God! Look at the river!" The Ohio, beaten back by the lashed and maddened Mississippi, was leaping in great furious waves, high and wild, as the ocean's in a tempest. These monstrous, foaming billows were springing far up the shores on both sides of the river, and devouring vast stretches of land covered with gigantic trees. The giants of the forest fell, groaning, into the boiling, swirling flood which leapt to catch them and swallowed them up with a hideous, hissing noise. Sunken trees which had lain for ages on the bottom of the river rose above the water like ghosts rising to meet the newly slain. "The boat," moaned Ruth. "Uncle Philip's boat, and the sick man!"