As Caleb sank, he hugged his arms close to his body, pressed his knees together, forcing the surplus air from his dress, and dropped rapidly toward the bottom. The thick lead soles of his shoes kept his feet down and his head up, and the breast-plates steadied him.
At the depth of twenty feet he touched the tops of the sea-kelp growing on the rocks below,—he could feel the long tongues of leaves scraping his legs. Then, as he sank deeper, his shoes struck an outlying boulder. Caleb pushed himself off, floated around it, measured it with his arms, and settled to the gravel. He was now between the outlying boulder and the Ledge. Here he raised himself erect on his feet and looked about: the gravel beneath him was white and spangled with starfish; little crabs lay motionless, or scuttled away at his crunching tread; the sides of the isolated boulder were smooth and clean, the top being covered with waving kelp. In the dim, greenish light this boulder looked like a weird head,—a kind of submarine Medusa, with her hair streaming upward. The jagged rock-pile next it, its top also covered with kelp, resembled a hill of purple and brown corn swaying in the ceaseless current.
Caleb thrust his hand into his haversack, grasped his long knife, slashed at the kelp of the rock-pile to see the bottom stones the clearer, and sent a quick signal of “All right—lower away!” through the life-line, to Lacey, who stood on the sloop’s deck above him.
Almost instantly a huge square green shadow edged with a brilliant iridescent light sank down towards him, growing larger and larger in its descent. Caleb peered upward through his face-plate, followed the course of the stone, and jerked a second signal to Lacey’s wrist. This signal was repeated in words by Lacey to Captain Brandt, who held the throttle, and the shadowy stone was stopped within three feet of the gravel bottom. Here it swayed slowly, half turned, and touched on the boulder.
Caleb watched the stone carefully until it was perfectly still, crept along, swimming with one hand, and measured carefully with his eye the distance between the boulder and the Ledge. Then he sent a quick signal of “Lower—all gone,” up to Lacey’s wrist. The great stone dropped a chain’s link; slid halfway the boulder, scraping the kelp in its course; careened, and hung over the gravel with one end tilted on a point of the rocky ledge. As it hung suspended, its lower end buried itself in the gravel near the boulder, while the upper lay aslant up the slope of the rock-covered ledge.
Caleb again swam carefully around the stone, opened his arms, and inflating his dress rose five or six feet through the green water, floated over the huge stone, and grasping with his bare hand the lowering chain by which the stone hung, tested its strain. The chain was as rigid as a bar of steel. This showed that the stone was not fully grounded, and therefore dangerous, being likely to slide off at any moment. The diver now sent a telegram of short and long jerks aloft, asking for a crowbar; hooked his legs around the lowering chain and pressed his copper helmet to the chain links to listen to Captain Joe’s answer. A series of dull thuds, long and short, struck by a hammer above—a means of communication often possible when the depth of water is not great—told him that the crowbar he had asked for would be sent down at once. While he waited motionless, a blackfish pressed his nose to the glass of his face-plate, and scurried off to tell his fellows living in the kelp how strange a thing he had seen that day.
A quick jerk from Lacey, and the point of the crowbar dangled over Caleb’s head. In an instant, to prevent his losing it in the kelp, he had lashed another and smaller cord about its middle, and with the bar firmly in his hand laid himself flat on the stone. The diver now examined carefully the points of contact between the boulder and the hanging stone, inserted one end of the bar under its edge, sent a warning signal above, braced both feet against the lowering chain, threw his whole strength on the bar, and gave a quick, sharp pull. The next instant the chain tightened; the bar, released from the strain, bounded from his hand; there was a headlong surge of the huge shadowy mass through the waving kelp, and the great block slipped into its place, stirring up the bottom silt in a great cloud of water-dust.
The first stone of the system of enrockment had been bedded!
Caleb clung with both hands to the lowering chain, waited until the water cleared, knocked out the Lewis pin that held the S-hook, thus freeing the chain, and signaled “All clear—hoist.” Then he hauled the crowbar towards him by the cord, signaled for the next stone, moved away from the reach of falling bodies, and sank into a bed of sea-kelp as comfortably as if it had been a sofa-cushion.
These breathing spells rest the lungs of a diver and lighten his work. Being at rest he can manage his dress the better, inflating it so that he is able to get his air with greater ease and regularity. The relief is sometimes so soothing that in long waits the droning of the air-valve will lull the diver into a sleep, from which he is suddenly awakened by a quick jerk on his wrist. Many divers, while waiting for the movements of those above, play with the fish, watch the crabs, or rake over the gravel in search of the thousand and one things that are lost overboard and that everybody hopes to find on the bottom of the sea.