These masses of stony matter, heaped up beneath the waters of the ocean, become as dangerous to mariners as so much ordinary rock, and to these, as to the common rock ridges, the seaman gives the name of "reefs." Such coral reefs cover many thousand square miles in the Pacific and in the Indian Oceans.

Far away, slowly scattering and receding, he heard the rustling and bleating of his frightened flock as the robbers, running and shouting, tried to drive them over the hills. Then he stood up and took the shepherd's pipe from the breast of his tunic. He blew again that plaintive, piercing air, sounding it out over the ridges and distant thickets.

After that, he looked resolutely astern over his companion's shoulders as she swung up between him and the sea with the slate-green ridges and tumbling white tops of the combers behind her. At length a hazarded glance showed him that they were close inshore, and he wondered for a moment whether he could swing the dinghy round without rolling the boat over.

ABENEZRA. When observed near the morning terminator, this noteworthy ring-plain, 27 miles in diameter, seems to be divided into two by a curved ridge which traverses the formation from N. to S., and extends beyond its limits. The irregular border rises on the W. to a height of more than 14,000 feet above the deeply-sunken floor, which includes several craters, hills, and ridges.

Accordingly, you see them strolling leisurely along as if nothing particular were happening; while the hills themselves, except for the occasional puffs of smoke, look; quite bare and empty; ridges of stone and rock, interspersed with grass tussocks, heaped up against the hot, blue sky. But now, as they advance farther across the plain, the muffled, significant sound of the Mauser fire begins.

"No water," he answered, "nor sign, of it, but I have seen a snow mountain straight west of us." He told them how he had lain out on the summit of a high butte the night before until dawn came revealing a dead world. Dark ragged mountains of volcanic rock lay to the north, and to the south a tangle of naked ridges whose sides were discolored as though by fire.

Above them a few stray, fleecy clouds flecked the blue of the arching sky, serving only to reveal its depth of color. On every side extended the rough irregularity of a region neither mountain nor plain, a land of ridges and bluffs, depressions and ravines. Over all rested the golden sunlight of late June; and in all the broad expanse there was no sign of human presence.

This was as much as they could carry with safety, as they had to make their way for two miles over loose ridges of ice, which would be still more difficult and dangerous if they were overloaded, and it required the utmost caution to avoid falling between these ridges, which had been raised by the waves and driven together by the winds. The footing once lost, inevitable destruction must follow.

Up with the dawn day after day, in saddle long hours, scouting the divides and ridges, stalking antelope and black-tail deer, chasing buffalo, he lived a life that hardened every muscle, bronzed the skin, cleared the eye and brain, and gave to even monotonous existence a "verve" and zest the dawdlers in those old-time garrisons never knew.

Stem 1 ft. high and 9 in. across, young plants being broader than high; the sides split up into about twenty ridges, which are again divided into knotty tubercles or waves.