LITMIR.BIZ

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that he was ravenously hungry and the provision bountiful, enough is said. His father came back into the sitting room, tossed the heavy strap on the stand, beside which his wife was still serenely sewing, picked up his pipe and by sucking vigorously upon it renewed the fire that had nearly gone out. He crossed his legs and slowly rocked to and fro, glancing hospitably at Alvin.

      While the latter was greatly amused by what he had seen and heard, he was also distressed for his friend Mike, whose idea of a joke was unique. There could be no mistaking the meaning of his father's actions. The son was due for a sharp castigation and was certain to receive it unless the caller interposed with a truthful statement of the recent occurrence.

      Alvin rose from his chair and stepping to the kitchen door, gently closed it. Mrs. Murphy looked up through her spectacles.

      "I don't wonder that ye wants to shet out the noise Mike makes whin aiting, fur the same is scand'lous."

      "It isn't that, but I don't wish him to hear what I say to you."

      "Shall I tell him to hold a finger of aich hand in his ears while he's aiting?" asked the mother without a smile.

      "He might find that inconvenient. Mike told you the truth when he said he was in a fight to-night."

      "I don't doubt the same, but I demands to know why he 'lowed himself to git licked?" said the father, with no little heat.

      "He wasn't licked: it was the other fellow who got the worst of it."

      "Why, thin, did the spalpeen say it was himself that was bested?"

      "Begging your pardon, Pat, he did not. He stated a general truth, which no one can deny, to the effect that a fellow like him takes a chance of being defeated now and then. Listen to my story."

      Thereupon Alvin related the incidents with which you are familiar, adding:

      "If it hadn't been for Mike's arrival and his brave fight in my behalf, I should have been badly beaten and robbed. The first wretch even fired a pistol during the rumpus."

      "Did he kill aither of ye?" asked the startled father.

      "The shot was not aimed at me or him, but was meant to scare me into stopping and giving up. If I had thought of it I should have taken the weapon from him and given it to Mike. Let me tell you," added Alvin impressively, "both of you ought to be proud of such a son as Mike."

      "So we are," quietly remarked the mother, without looking up or checking her flying needle.

      "There isn't a pluckier lad in the world. He came to my help like a whirlwind, and the way he sailed into the fellow who struck me from behind showed Mike to be a hero."

      The father reached out and grasped the loop of leather lying on the stand. Rising to his feet he passed into the small room where the stove wood was piled and hung the strap again upon the metal peg. As he came back and resumed his seat he sighed. It looked as if he was disappointed.

      "What do you intend to do with him, Pat?"

      "Train him up in the way he should go. Whin the school opens at Southport he will attind there, and whin he's at home I'll find enough to kaap him out of mischief."

      "School will not open until September, which is several weeks away. I want you to lend Mike to me until then."

      Mrs. Murphy stopped her sewing for the moment and looked at their visitor. Her husband removed the pipe from his mouth and also stared at him.

      "Lind him to ye!" he repeated. "And phwat would you do wid him?"

      "You know father bought me a motor boat, which arrived a few days ago. Chester Haynes and I have had great fun cruising up the Kennebec and different bays and streams, and we are going to keep at it until we have to go home. We want Mike to join us and share our sport, just as long as Chester and I are in this part of the world. You won't refuse me the favor?"

      It was evident that the parents were pleased with the request. The proud mother said:

      "Mike is so gintle that he'll be a good companion for anyone."

      "Yis; because of his gintleness," repeated the father grimly. "But it saams to me ye're too kind, Alvin; he won't be able to airn his kaap and the indulgence ye'll give him."

      "Won't earn them! Why, we don't intend to hire him; it's the pleasure we shall have in the company of such a good fellow as Mike. Besides," added Alvin, lowering his voice, "I have a feeling that we're not through with those two fellows who attacked me to-night. Mike won't be satisfied until he has paid the one who ran away from him and left his hat behind."

      "Ye're wilcome to the lad," assented his father, "and I take it as very good on yer part, which is what ivery one has a right to ixpict from yersilf and father."

      "No blarneying, Pat," protested their caller. "I am obliged to you for granting my request, for the favor will be wholly given to us."

      "Now it's yersilf that's blarneying," said Pat.

      The kitchen door softly opened and the grinning, red-faced Mike came into the room and sat down near his young friend.

      "I overheerd ivery word that was said, Captain, and it's Mike Murphy that's thankful for yer kindness. I'm wid ye to the ind."

      The others laughed at the use of the title by the Irish youth, who explained:

      "Av coorse it's 'Captain Landon,' being that ye're the owner of the motor boat, as ye calls the same."

      "And you shall be my first mate," said Alvin.

      "Won't Chister, as ye name him, be jealous and indulge in mootiny?"

      "No fear of that; we'll satisfy him by making him second mate, while all three will form the crew. And now I must bid you good night. I shall call for you as soon as we are through breakfast to-morrow morning."

      With which our young friend went to his own home.

      CHAPTER V

      A Motor Boat

      The first time you stepped aboard a motor boat you were impressed by the looks of the engine and the numerous appliances which when rightly handled drive the craft through the water at the rate of ten, fifteen, twenty and sometimes more miles an hour. You thought it would be hard to learn to manage the boat and know how to overcome the different kinds of trouble that are almost certain to arise. But the task, after all, is simple and with patience you can soon master it.

      In the first place let us find out the principle which governs the smooth, swift progress of the structure. I shall be as brief and pointed as possible.

      As a foundation, we need a good supply of clean, strained gasoline in the tank. Unless the fluid is free from all impurities it is likely to clog and interfere with the working of the machinery. The tank is so placed that its elevation is sufficient to cause the gasoline to flow by gravity through the pipe, which is connected by an automatic valve with the carburettor, admitting just enough to answer the purpose desired. As the gasoline is sprayed into the carburettor a quantity of air is drawn in from the outside. The two mingle and form a highly explosive gas. To start, you give the fly-wheel a rapid swing, which causes the piston to move downward. This action sucks the gaseous mixture into the cylinder through the inlet valve. The further movement of the fly-wheel causes the piston to move upward, compressing the gas into small volume. While the gas is thus compressed it is exploded by means of an electric spark. The violent expansion of the burning gas drives the piston downward with great force. The movement opens the exhaust valve, the burnt gases escape through the exhaust pipe and the fresh mixture is drawn in again to be compressed and exploded as before. If the engine has more than one cylinder the same process is repeated in each one. This is the operation which is continued so long as the supply of gasoline holds out.

      In the steam engine the vapor acts alternately on each side of the piston head, but in motor boats and automobiles it acts only on one side. The speed with which this is done is amazing and the same may be said of the steam engine.

      The swift rise and fall of the piston acting through the connecting rod turns the shaft directly below, which whirls the screw around at the stern. The electric spark that explodes the vapor is generated by a dry battery or by a magneto-electric

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