of the motor announced that it was running. Frank sat down at the key and, depressing it, sent a blue-white flame crackling across the spark gap. Out into space, from the aërials stretched above, the message went volleying. It was the call of the Portland station that Frank was sending. He flashed it out three times, as is customary, and then signed it F-C., the latter being Brigg Island’s agreed-upon signature. Then, while the others gathered round, Frank adjusted the “phones,” the delicate receivers that clamp over the ear and through which, by way of the detector, any message vibrating in the air may be caught as it encounters the antenna.
Frank listened some time but – save for the conversation of two wireless operators far out at sea – he could hear nothing. With a gesture of impatience Frank began adjusting his tuning coil. All at once he broke into a smile of satisfaction. At last Portland was answering:
“F – C! F – C! F – C!”
“All right,” rejoined Frank, sending a volley of sparks crashing and flashing across the gap as soon as he could break in, “is there any answer to my message?”
“Yes. Perkins will be at Motthaven to-morrow night. He wants you to meet him,” came back the answer, winging its way over the intervening miles of space.
“Is that all?”
“That’s all.”
Frank removed the “phones,” grounded his key and told Harry he could stop the motor.
“I’ll be glad when the doctor does get here,” he confided to the others, after he had communicated the message, “for I’m beginning to think that we are in for some sort of trouble. Those two Daniels are pretty influential in the village, and it only needs a word from them to turn the whole crowd against us.”
“We could stand ’em off,” bragged Pudge grandiloquently, “lassoes and lobsters, we could stand ’em off. I half wish they would come – buttons and buttercakes, but I do!” and Pudge doubled up his fists and looked fierce.
“You forget, Pudge,” said Frank, “that we are here in positions of responsibility. All this property is your father’s. It is our duty to see that no harm comes to it. A bunch of those fishermen inflamed by anger might be able to do more harm here in an hour than could be repaired in months, not to mention the cost.”
“Surely you don’t think they’d come down to actual violence, Frank?” inquired Harry.
“I don’t know. The two Daniels looked mighty savage to-day, I can tell you. If it hadn’t been for the electric fence they might have made trouble. At all events I’ll be glad to have some advice.”
CHAPTER III. – A NIGHT ALARM
After supper that night, a meal consisting of fried salt pork, boiled potatoes and some fresh fish which Frank had caught earlier in the day, the elder of the Chester lads called what he termed “a conference,” although Billy Barnes declared it was more in the nature of a “council of war.”
We are not going to detail here all that was said as it would make wearisome reading; but, after an hour or more of talk, Frank spoke his mind.
“It may be all foolishness, of course,” he said, “but I think that we ought not to leave the island unguarded to-night. Daniels and his son have had a taste of that wire fence and they may have figured out some way to get around it – it would be a simple enough matter to do, after all.”
“Well, what’s your proposal?” inquired Billy Barnes.
“To patrol the island all night, taking turns on watch. It’s not more than a mile or so all round it, and it ought to be an easy matter to keep the ground thoroughly covered.”
“Rifles and rattlesnakes!” burst out Pudge, “I thought this was to be a sort of working vacation and not a civil war.”
Frank smiled, and then assumed a graver expression as he went on:
“There is so much valuable property here which it would be easy for malicious people to injure that I wouldn’t feel justified in leaving the island unguarded all night. What do the rest of you think?”
“Just as you do, Frank,” rejoined Harry heartily, while Billy and Pudge nodded vigorously; “we’ve got to keep a sharp lookout. I nominate myself and Pudge for the first watch – say from eight to twelve. You and Billy can go on duty from midnight till daylight.”
After some discussion this order of procedure was adopted. Promptly at eight o’clock Harry and Pudge Perkins went “on duty,” while Frank and Billy turned in to get what sleep they could. As a matter of precaution, when they came to the island, the boys had brought along a revolver, and Harry was armed with this when he went on duty. He was not, of course, to use it as a weapon of offence, but it was agreed that, in case there was any alarm during his watch, he was to fire it three times, when the others would come to his assistance.
Harry and Pudge accompanied each other as far as the gate, and then threaded their way down the path among the rocks toward the beach. A mild current had been turned on in the fence, enough to give an uncomfortable shock to any one tampering with it, but not enough to exhaust the storage batteries which supplied it.
When they reached the beach, Harry paused.
“We’d better start this patrol in opposite directions,” he said, “and then we can meet each other once on every circuit.”
“All right,” agreed Pudge, “but – pirates and parachutes – keep a good eye open.”
“Don’t worry about me,” rejoined Harry; “so long!”
As he spoke each boy stepped off into the darkness to begin the patrol. As Harry trudged along the beach his mind was full of the events of which Frank had spoken that afternoon. Up in the lighted hut, with his companions around him, it had seemed a very remote possibility to the boy that any attack should be made on the island. But pacing along under the stars, with only the sound of his own footsteps for company, placed a very different light on the matter. What if the disgruntled fishermen should make a night descent on the island?
“This won’t do,” exclaimed Harry to himself, coming to a sudden halt in the cove opposite to which the motor boat was moored, and where a blacker patch on the dark sand showed him the beached dinghy, “it’s no use getting shivery and scared just because a couple of cranky fishermen are so sore at us. I’ve got to brace up, that’s all there is to it.”
His surroundings, however, were not calculated to soothe the nervous suspense of the lad. Except for the stars glittering like steel points in the night sky there was no light. The night was so pitchy dark, on the beach under the shadow of the trees, that he could hardly see with certainty a yard ahead of him. The surf roared hoarsely against the rocks at the point – for the tide was full, and the night wind moaned in the trees like a note of warning.
With an idea of carrying out his patrol properly, Harry went toward the darker patch amid the gloom which showed him where the beached dinghy lay. He examined it as well as he could, and made sure that it was well above tide water. Having completed this, he paced on, and in due time heard footsteps approaching him which he knew must be those of Pudge Perkins. A minute later the two young sentinels met and exchanged greetings. Pudge had nothing to report, except that it was what he called a “creepy” job. However, he pluckily averred: “Ghosts and gibberish, Harry, I’m going to stick it out.”
“That’s right,” approved Harry, and after a few words both boys once more started out on their lonesome tours of duty.
In due course Harry again reached the cove opposite the schooner hulk, and this time, being rather tired, he decided to sit down on the beached dinghy and take a rest. But, to his astonishment, it didn’t seem to be in the place where it should have been.
“I could have sworn it was right here,” said Harry to himself, as he trudged about on his quest, “it must be close at hand. Guess I’ll fall over it and hurt my shins in a minute.”
But although he reassured himself, the boy felt far from secure in his belief. After a further painstaking search he was fain to confess – what