CHAPTER I.—MYSTERIOUS DISAPPEARANCES.
The motor boat Rambler lay pulling at her anchor-chain in the muddy waters of the Gulf of California. To the North opened the wide, shallow mouth of the Colorado river, with its many shifting currents and treacherous sandbars.
Eastward stretched a Mexican desert, where flourished cacti and forms of animal life unknown to other parts of the world. Beyond this waste of sand, which had, in times long gone by, formed the bed of a lake, rose the peaks and ridges of the Sierra del Pinacates mountains.
To the South the Montague islands shut out the body of the Gulf, and Westward a patch of desert led out to a mountain range. There are two volcanic elevations running down the peninsula, and beyond them lies the tumbling Pacific ocean, a hundred miles away.
The sun was lifting out of the desert to the East, rising round and red and hot, like the bottom of a great brass kettle, and the chill of the dark hours was changing to the stifling, long-scorching heat which is a thing of the desert the world over.
Those who have followed the adventures of the Rambler and her crew, will remember her last on the Columbia. After a journey through the wild canyons and forest-lined reaches of the great river of the Northwest Territories, the motor boat had been shipped to Guaymas, where she had taken to the water again in the Gulf of California.
The Rambler carried a crew of three this morning, Clayton Emmett, Cornelius Witters and Alexander Smith wick, boys of seventeen, who had explored the Amazon as well as the Columbia in the staunch little boat. There had been others on the previous trips, but now only these three were ready for the voyage up the wonderful stream which finds its waters in the frozen snows of the Rocky Mountains and plays hide-and-seek with them thousands of feet below the lips of the desert, in the most mysterious and wildly beautiful canyons known to the world.
Others might join them at up-river points, but the lads were content to make the journey just as they were. Now, as the sun rose higher and the air above the sands began to shimmer in the heat, they tumbled out of their bunks in the little cabin of the motor boat and, after invigorating baths in the Gulf, began preparations for breakfast.
“If we wait much longer,” Alex suggested, as he busied himself in making coffee, “we won’t want anything for breakfast but snowballs, it will be so hot, and we’re not likely to get them in this oven of a land. Who’s going to fry the cakes this morning? Oh, you would, would you!”
This last sentence was addressed to a grizzly bear cub which shambled into the cabin and placed two paws and a soft muzzle of a mouth on the table where the boy stood. This was “Teddy,” the cub Alex had captured during the trip down the Columbia river.
“I know what you want, Teddy Bear!” the boy added, as the cub winked a small eye at him. “You want to wait until I get the sugar out, then you want to empty one bowl into one bear! Now, you move on!”
The boy addressed the cub just as he would have spoken to one of his chums, and the bear appeared to understand what was said to him, for he grabbed angrily at an egg which Alex had brought to “settle” the coffee and made off with it, walking upright to the door, with the broken yolk marking his muzzle, paws and breast with cabalistic inscriptions in yellow.
Once on deck the cub was promptly chased over the rail into the Gulf, where he wallowed clumsily, with three boys laughing at his antics and penitent looks. When permitted to come, dripping and sullen, on board he sulked off to a corner and scolded every one who approached until Captain Joe sat down in front of him and grinned sarcastically at his plastered fur and stuck-up eyes.
Captain Joe was a white bulldog the boys had acquired on the Amazon trip. The bear and the dog were great chums. Captain Joe now sat making wrinkled faces at the disconsolate cub.
“Eat him up, Captain Joe!” Cornelius Witters, known to his friends as “Case,” shouted. “He stole an egg!”
The dog cocked one short ear and looked reproachfully at the cub.
“The price of that egg would have bought you a bone, Captain Joe,” Clayton Emmett, better known as “Clay,” put in. “Take a bit out of him, just to teach him better manners!”
Captain Joe winked his red eyes at Teddy and walked away in a dignified manner, as if not relishing being made the executioner of the crew! The lads laughed at the animal’s attitude of offended innocence and went on with their preparations for breakfast.
The most of the cooking was done on the top of a coal stove, but the coffee was bubbling on an electric coil which stood on a table at the back of the cabin. After a dozen pancakes had been cooked Alex placed them close to the electric coil to keep warm, though, as he said, “The air was fit to keep them red hot anywhere.”
There was a small, square window over the electric stove, at the back of the cabin, a window which opened on about a yard’s width of deck at the stern of the boat. This small space concealed gasoline tanks, and was not in sight from either the deck or the cabin of the motor boat.
Indeed, it was rarely visited, except by Captain Joe and Teddy, who often took long siestas there when the bulk of the cabin cast shadows on the bare planks.
Case cooked heap after heap of brown buckwheat cakes and passed them on to Alex to be placed in the warming closet, as the boys called the ledge of the electric stove, “until they had enough to get a good eating start on,” as Witters observed. Finally he ceased his efforts and glanced at the place where the tempting heap of cakes had been placed.
There was not even a crumb of a pancake in sight! Alex was busy getting out plates and cups, his back to the electric stove and the window. The coffee was bubbling over the cherry-red coils.
Case advanced to the stove and looked over it, under it, around it, and even under the table it stood on. There wasn’t a pancake, or a part of pancake, anywhere! He rushed up to Alex and shook him by the arm.
“You never bolted ’em all?” he demanded. “Not every last one of them, did you? Two dozen of 'em! You never did!”
Alex dropped a plate on the table and looked quizzically at Case.
“Sure!” he declared. “Sure I did! What of it?”
“Two dozen cakes at one gobble!” laughed Case. “Now, you can get ready to cook more. Land of Promise! Twenty-four—count 'em—twenty-four at one mouthful! If I had your capacity I’d—”
Then Alex began to sense the situation. He glanced from Case to the place where the cakes had just stood in a rich, brown column. Then his eyes roved about until they encountered Captain Joe and Teddy consoling each other on the prow of the boat. They certainly couldn’t have done it!
“Did you get ’em?” he asked, hopelessly, of Case? “Did you cop 'em out to prevent our getting indigestion?”
“You ate them yourself!” Case returned, half angrily.
Alex grinned and placed his hands at his lean waist.
“I don’t seem to find ’em anywhere,” he laughed. “Not on me!”
“Then where did they go?” demanded Case. “Who did get them?”
Alex walked to the rear window and opened it. The sash swung inward on hinges, and was not locked, but it rarely was locked. Then he thrust his head out of the opening and looked down on the small deck. There was no one there.
“The old Nick is in the place!” Case cried, presently. “I can smell sulphur in the air! Suppose we get out of this?” he added, as Clay came into the cabin. “This ain’t no place for a Christian gentleman!”
Clay’s eyes sparkled when the story was told to him.
“It is a joke!” he laughed. “You’ll have to get some fairy tale stronger than that to account for a lost breakfast! Come on, now, who got the cakes? Own up, and I’ll fry more. Who is the villain?”
“You may search me,” Alex answered, dropping into slang. “Case handed them to me and I put them on the edge of the electric coil. They’ve gone up in the air, if anybody should ask you! Right up in the air!”
“Who opened the window?” asked Clay, still unbelieving.
“I did,” Alex answered. “There’s no one out there.”
“No one could get on board without being challenged by Captain Joe,” Case suggested. “Even Teddy would make a row and ask questions of any stranger! It is uncanny! I’m beginning to think the Rambler is haunted. Or it may be the locality! Suppose we pull anchor and go on up?”
“Just my idea!” Alex agreed. “When we get a few miles up the Colorado, I’ll cook bacon and eggs for breakfast, and we can have some of the honey Teddy didn’t get his thieving paws on.”
So the boys brought up the anchor, started the motors, and in ten minutes were pushing up the Colorado. The famous river is wide and shallow at its junction with the Gulf of California, and the constantly changing currents heap sandbars to-day where there was deep water yesterday, so the lads proceeded at less than half speed.
At the end of an hour they were only fifteen miles from the anchorage of the night before. The river was narrowing. To the east a low line of sand hills came down to the water, to the west the foothills of the Sierra de los Cucapas range dropped close to the channel. Something less than one hundred miles to the north was Yuma, where the Southern Pacific Railroad crosses the stream.
The lads cast anchor near the west shore, and Alex brought out the bacon and eggs, while Case proceeded to brew fresh coffee. By this time the sun was shining blisteringly on the deck of the motor boat, and all three lads were in the cabin, with all the small windows open to the slight breeze.
“Now,” Clay suggested, as the three sat at the little table in the center of the cabin, two facing each other and one looking out of the open doorway which commanded a view of the deck, “suppose we have the honey we’re going to consume to keep Teddy from acquiring it? Where is it?”
“I put it back of the electric stove, there by the window,” Alex replied. “I’ll get it in a minute.”
Three faces were turned toward the rear window, three pair of eyes expressed amazement, incredulity, three boys sprang to their feet and moved toward the electric stove. The can of honey was not there!
“I saw it not more than a minute ago!” insisted Case.
“So did I,” Alex agreed. “Not half a minute ago!”
Then three faces turned toward the deck. Teddy and Captain Joe lay on the prow, sweltering in the heat, their ears cocked as if set to catch some sound as yet only faintly heard. They didn’t have the honey!
“I reckon,” Alex observed, “that we’ve got a phantom boarder!”
“He’s got his nerve, whoever he is!” Case said, with a scowl, for Case was inordinately fond of honey, and had counted much on the can which had so strangely disappeared. “He’s clever, too!”
Captain Joe now arose from the deck at the prow and walked to the railing on the port side. He stood there an instant, as if undecided what to do next, then lifted his paws to the top of the deck guard and looked over into the river.
“I guess the dog’s got him—this phantom boarder!” Clay laughed.
But Captain Joe went back to the cub in a moment and lay down again. If there was any stranger around the boat, the dog certainly was not aware of the fact, the boys concluded. Yet some one had taken the cakes and the honey! Who could it have been, they asked each other.
“It wouldn’t be right for us to start on a river trip unaccompanied by a mystery,” laughed Clay. “We had a mystery with us while we were on the Amazon, and the Columbia panned out pretty well in that particular, too, so I’m not much astonished by the presence of a mysterious boarder now. He ought not to take the best of everything, though,” he added, with a grin at Case, who was still inconsolable because of the loss of the honey.
“Say,” Alex exclaimed, presently. “This is no joke! There’s something going on here that we ought to know more about. The pancakes and honey never walked off without legs! Some fierce creature may have come up out of the river and grabbed them, but I don’t believe it.”
“Do you think there’s some one hidden on the boat?” asked Case. “If there is, where is he? No place to hide here, that I know of.”
“I don’t know anything about that,” Alex returned. “No one from the shore took the two articles of food, for they were taken at points fifteen miles apart—unless we have been visited by two thieves using the same methods, which I do not believe.
“I’m going to find out whether human hands took the grub, or whether some monster came up out of the river and assessed us for a square meal. You boys stay here and watch in front, and I’ll climb on the little deck over the gasoline tanks and see what’s going on there. If anything I can’t handle shows up, I’ll call for help!”
Clay and Case sat for a long time with their eyes fixed on the open deck and the up-river landscape. They heard Alex scramble over the low cabin roof and take a position on the narrow space over the tanks. Then all was still save the rush of the water. Captain Joe arose again, sniffed at the port rail, peered over into the water, and gave a low growl.
“He sees something!” Clay cried, excitedly.
Case hastened to the rear window and looked out, as if to ask Alex a question. At first he only looked out. Then he leaned out. Then he dashed out of the cabin and called to Clay, a note of anxiety in his tone.
When Clay reached the deck he saw what had excited his chum. Alex was not on the narrow deck, not on the cabin roof, nowhere on the boat! The river ran away smooth and clear, sparkling in the light with no craft in sight. The boy had disappeared as utterly as if he had been dissolved in the hot air!