"We had a lot of earthquakes," said Dorothy. "Didn't you feel the ground shake?"

"Yes; but we're used to such things in California," he replied. "They don't scare us much."

"The conductor said it was the worst quake he ever knew."

"Did he? Then it must have happened while I was asleep," he said thoughtfully.

"How is Uncle Henry?" she enquired, after a pause during which the horse continued to trot with long, regular strides.

"He's pretty well. He and Uncle Hugson have been having a fine visit."

"Is Mr. Hugson your uncle?" she asked.

"Yes. Uncle Bill Hugson married your Uncle Henry's wife's sister; so we must be second cousins," said the boy, in an amused tone. "I work for Uncle Bill on his ranch, and he pays me six dollars a month and my board."

"Isn't that a great deal?" she asked, doubtfully.

"Why, it's a great deal for Uncle Hugson, but not for me. I'm a splendid worker. I work as well as I sleep," he added, with a laugh.

"What is your name?" said Dorothy, thinking she liked the boy's manner and the cheery tone of his voice.

"Not a very pretty one," he answered, as if a little ashamed. "My whole name is Zebediah; but folks just call me 'Zeb.' You've been to Australia, haven't you?"

"Yes; with Uncle Henry," she answered. "We got to San Francisco a week ago, and Uncle Henry went right on to Hugson's Ranch for a visit while I stayed a few days in the city with some friends we had met."

"How long will you be with us?" he asked.

"Only a day. Tomorrow Uncle Henry and I must start back for Kansas. We've been away for a long time, you know, and so we're anxious to get home again."

The boy flicked the big, boney horse with his whip and looked thoughtful. Then he started to say something to his little companion, but before he could speak the buggy began to sway dangerously from side to side and the earth seemed to rise up before them. Next minute there was a roar and a sharp crash, and at her side Dorothy saw the ground open in a wide crack and then come together again.

"Goodness!" she cried, grasping the iron rail of the seat. "What was that?"

"That was an awful big quake," replied Zeb, with a white face. "It almost got us that time, Dorothy."

The horse had stopped short, and stood firm as a rock. Zeb shook the reins and urged him to go, but Jim was stubborn. Then the boy cracked his whip and touched the animal's flanks with it, and after a low moan of protest Jim stepped slowly along the road.

Neither the boy nor the girl spoke again for some minutes. There was a breath of danger in the very air, and every few moments the earth would shake violently. Jim's ears were standing erect upon his head and every muscle of his big body was tense as he trotted toward home. He was not going very fast, but on his flanks specks of foam began to appear and at times he would tremble like a leaf.

The sky had grown darker again and the wind made queer sobbing sounds as it swept over the valley.

Suddenly there was a rending, tearing sound, and the earth split into another great crack just beneath the spot where the horse was standing. With a wild neigh of terror the animal fell bodily into the pit, drawing the buggy and its occupants after him.

Dorothy grabbed fast hold of the buggy top and the boy did the same. The sudden rush into space confused them so that they could not think.

Blackness engulfed them on every side, and in breathless silence they waited for the fall to end and crush them against jagged rocks or for the earth to close in on them again and bury them forever in its dreadful depths.

The horrible sensation of falling, the darkness and the terrifying noises, proved more than Dorothy could endure and for a few moments the little girl lost consciousness. Zeb, being a boy, did not faint, but he was badly frightened, and clung to the buggy seat with a tight grip, expecting every moment would be his last.

When Dorothy recovered her senses they were still falling, but not so fast. The top of the buggy caught the air like a parachute or an umbrella filled with wind, and held them back so that they floated downward with a gentle motion that was not so very disagreeable to bear. The worst thing was their terror of reaching the bottom of this great crack in the earth, and the natural fear that sudden death was about to overtake them at any moment. Crash after crash echoed far above their heads, as the earth came together where it had split, and stones and chunks of clay rattled around them on every side. These they could not see, but they could feel them pelting the buggy top, and Jim screamed almost like a human being when a stone overtook him and struck his boney body. They did not really hurt the poor horse, because everything was falling together; only the stones and rubbish fell faster than the horse and buggy, which were held back by the pressure of the air, so that the terrified animal was actually more frightened than he was injured.

How long this state of things continued Dorothy could not even guess, she was so greatly bewildered. But bye and bye, as she stared ahead into the black chasm with a beating heart, she began to dimly see the form of the horse Jim—his head up in the air, his ears erect and his long legs sprawling in every direction as he tumbled through space. Also, turning her head, she found that she could see the boy beside her, who had until now remained as still and silent as she herself.

Dorothy sighed and commenced to breathe easier. She began to realize that death was not in store for her, after all, but that she had merely started upon another adventure, which promised to be just as queer and unusual as were those she had before encountered.

With this thought in mind the girl took heart and leaned her head over the side of the buggy to see where the strange light was coming from. Far below her she found six great glowing balls suspended in the air. The central and largest one was white, and reminded her of the sun. Around it were arranged, like the five points of a star, the other five brilliant balls; one being rose colored, one violet, one yellow, one blue and one orange. This splendid group of colored suns sent rays darting in every direction, and as the horse and buggy—with Dorothy and Zeb—sank steadily downward and came nearer to the lights, the rays began to take on all the delicate tintings of a rainbow, growing more and more distinct every moment until all the space was brilliantly illuminated.

Dorothy was too dazed to say much, but she watched one of Jim's big ears turn to violet and the other to rose, and wondered that his tail should be yellow and his body striped with blue and orange like the stripes of a zebra. Then she looked at Zeb, whose face was blue and whose hair was pink, and gave a little laugh that sounded a bit nervous.

"Isn't it funny?" she said.

The boy was startled and his eyes were big. Dorothy had a green streak through the center of her face where the blue and yellow lights came together, and her appearance seemed to add to his fright.

"I—I don't s-s-see any-thing funny—'bout it!" he stammered.

Just then the buggy tipped slowly over upon its side, the body of the horse tipping also. But they continued to fall, all together, and the boy and girl had no difficulty in remaining upon the seat, just as they were before. Then they turned bottom side up, and continued to roll slowly over until they were right side up again. During this time Jim struggled frantically, all his legs kicking the air; but on finding himself in his former position the horse said, in a relieved tone of voice: