"I feel just about buried now," was the hoarse reply.
At the end of the score of houses that made the village street, the party struck a deep drift of the volcanic ash. It took the guide to his waist and he stumbled and fell. The fine acrid pumice filled his mouth and his nostrils, and when Eric picked him up, he feared the man would strangle to death. A mouthful of fresh air would have meant much to the sufferer, but there was nothing but the sulphur-laden atmosphere to breathe. In a minute or two, however, choking and gasping, the guide cleared his nasal passages and throat of the burning dust. Blinded and staggering, he recovered enough to be able to walk, but Eric took his place and led the way.
Warned by this accident, which had so nearly proved a fatality, the boy proceeded with extreme caution, digging a shovel before him every step to make sure that the ashes did not hide some newly opened earthquake crevice into which the party might fall. Under the slope of the mountainous shores the swirling spume of gray-yellow dust was so dense and yet so light in weight that the men struggled in ashes to their waists, and it was hard to tell where earth ended and air began. It was as though the earth had no surface. Unconsciously Eric found himself using the motions of swimming, in order to cleave his way through the semi-solid dust.
Suddenly, as Eric prodded the ground before him, the shovel went through with a jolt, almost precipitating the boy on his face. Had it not been for the slowness and the care with which he was advancing, he might have had the same fate as the guide. Lifting up the spade, what was his horror to find that it was wet!
With quick alarm Eric realized that the rescue party was in the utmost peril. They had wandered from the shore and were in very truth within a few inches of disaster. They were walking on the sea! The layer of floating ash, though several feet thick, was but a treacherous surface which might break through at any moment and land them in the water below. There, certain death awaited them, for they would smother and drown under the hideous pall. With his heart in his throat Eric turned sharply to the right, trusting only to a vague sense of direction. A score of steps brought him to a slight billowing of the ash, and with a sigh of relief he knew he was on solid ground again.
The danger was little less upon the shore. Huge avalanches could be heard hurtling down the mountain-side and with each new slide the air became, if possible, more unbreathable than before. A new fear possessed the lad. It might be that they would return alive to the ship, but might not every member of the party be made helpless for life by the clogging of the lung-passages with dust?
Presently he felt a tug at the line which roped the members of the party together, and he stopped.
"What's the trouble?" he passed back word.
"Duncan's gone under, sir."
Eric made an uncomplimentary reference to Duncan under his breath, then questioned,