The rock that had been a rest for Garry's arm was swaying, and to his ears came a rumble and groan. Sentinel Mountain, that had watched the ages pass, that had seen the oceans truly change to sand, protested again at this disturbance of its own long sleep. Garry heard the coming of the masses from above; the crashing din was deadening to his ears. They were safe--and his eyes were upon a savage figure, black and tall, that stared and stared, silently, across a sea of yellow sand. He watched it, clear-cut, motionless--until it vanished beneath the roaring flood of rocks. * * * * * And close in his arms there pressed the soft body of a trembling girl who touched his face and whispered: "Your _Tao_, my brave one, is strong. Hold me closely that he may count me as your friend." His own whispered words, though differing somewhat, were a fervent echo of hers. He saw the rocky masses piled high where the mouth of a cave had been; and "Thank God!" Garry Connell said, "we got out of there in time!" The casket of jewels lay neglected among the rocks: to-morrow would be time enough to salvage the wealth for which he had risked his life. He swept the girl into his arms, and the sun's last rays made golden splendor of his burden as he carried her across the broken stones. His ranch showed far below him when he stopped, but the green of date palms had vanished under the last great sweep of rocks. Some few that remained made dark splotches among the shadows that were engulfing the world. What did it matter? Miramar--"Beautiful Sea!" He laughed grimly at thought of how that sea had served him, but his eyes were tender in his tanned and blood-stained face. Miramar could be restored. And it would be less lonely now.... ROBOT CHEMIST A robot chemist with an electric eye, radio brain and magnet hands functioned without human supervision in an improvised laboratory recently before members of the New York Electrical Society. The automatic chemist performed several experiments. Its work was explained by William C. MacTavish, professor of chemistry at New York University, and was part of a program in which cold light was reproduced, a sample weighing a millionth of a gram analyzed, a photo-electric cell used to control analysis and new scientific apparatus demonstrated. In his talk on "The Magic of Modern Chemistry," Professor MacTavish demonstrated the separation of para-hydrogen and ortho-hydrogen. In the micro-analysis of a millionth of a gram, Professor MacTavish exhibited in the micro-projector a ball of gold weighing one thousandth of a milligram (one twenty-eight millionth of an ounce), having a value of less than one ten-thousandth of a cent. The robot chemist was the joint creation of Dr. H. M. Partridge and Professor Ralph H. Muller of the department of chemistry at New York University. In explaining what the automatic chemist can do, Professor MacTavish said: