The Launch Boys' Cruise in the Deerfoot. Ellis Edward Sylvester

driven by the motor itself. There is also the "make and break" spark, to which we need give no attention. The two ends of the wires in the spark plug which is screwed into the cylinder are separated by a space barely the twentieth part of an inch, across which the spark leaps, giving out an intensely hot flash.

      You understand, of course, that I have given simply the principle and method of operation of the engine belonging to a motor boat. There are many parts that must operate smoothly and with the minimum of friction. Lubricating oil is as essential as gasoline; the ignition battery must be kept dry; you must know how to operate the reversing lever, to shut off, to start and to hold the desired speed. Except when racing or under some pressing necessity, the swiftest progress is rarely attained, for it is trying to all parts of the engine and consumes a good deal of fuel, which cannot be bought for a trifling price.

      You would be confused by any attempt on my part to give a technical description of all the motor appliances, nor is there need to do so. If you have just bought a motor boat, you will be taught how to control and manage it by a practical instructor, and such instruction is better than pages of directions. To show the truth of what I have just said, I will quote a single paragraph from the description of the boat concerning which I shall have a good deal to say in the course of my story.

      "The keel is of white oak, with specially bent elm frames. Planking of selected Laguna mahogany, finished thickness one-half inch, in narrow strakes and uniform seams, secured to frames by copper boat nails, riveted over copper washers, all fastenings being of bronze or copper to withstand salt water. Seams of hull caulked with special cotton payed and puttied. Outside of mahogany planking, finished in natural wood with spar varnish. Watertight bulkheads fore and aft which assist in floating the launch in case of accident. Decks and interior woodwork finished in selected Laguna mahogany. Steam bent quartered oak or mahogany coaming extending around cockpit."

      Alvin Landon's launch was thirty-five feet long, with six-cylinder, sixty-horse power motor and a guaranteed speed of twenty-four miles an hour. The motor was placed under the forward deck, where it was fully protected by a hinged metal deck. To become somewhat technical again let me proceed:

      All the valves were placed on the same side, the camshaft (operating the valves) as well as the pump shaft being mounted on ball bearings. The crankcase was of tough aluminum alloy, and lubrication was well provided for, being kept at a constant level in the crankcase by a geared oil pump. A gear-driven pump circulated the necessary cooling water for the cylinders, which passed out through the copper exhaust pipe at the stern. Only one operating lever was employed and that was placed directly at the helmsman's left hand. The gasoline tank contained fifty gallons and was under the after deck with a pan below it for safety's sake, draining overboard. The propeller wheel and shaft were of bronze.

      Alvin's motor boat, thus partially described, included the necessary deck hardware, "such as brass chocks and cleats, flag pole sockets and flag poles, ventilators to engine compartment, rubber matting for floor, cushions and upholstered backs for seats, three sailing lights, oars, rowlocks and sockets, compressed air whistle with tank, two pairs of cork fenders, bell, foghorn, boat hook and portable bilge pump, six life preservers (as required by the U. S. Government), a twenty-pound folding anchor and a hundred feet of strong manila rope."

      We must not forget the glass wind-shield. Passengers and crew were always guarded against flying spray and sweep of wind and rain. Nothing that forethought could provide for the safety and comfort of all was forgotten.

      Suppose young Captain Landon stepped on board the Deerfoot with the intention of starting out on a cruise. He would first turn on the switch which controls the electric current for the jump spark, open the valve that allows the gasoline to flow from the tank into the carburettor, swing around the fly-wheel and then assume charge of the lever and steering gear. But lo! the engine refuses to respond. There is no motion. What is the cause?

      There may be a dozen of them. In the first place, the battery may be worn out; there may be a lack of compression due to leaky valves; perhaps, after all, he forgot to place the switch key in position; the spark plugs may be fouled or cracked, the gasoline shut off, the gas mixture imperfect, no gasoline in the tank, water in the cylinder caused by a leak from the water jacket, or water in the gasoline.

      It may be that when the launch has covered a good many miles the engine suddenly stops. The cause may be faulty ignition, because of a disconnected wire or a loose terminal, exhaustion of the gasoline, or derangement of the magneto, or poor carburettor adjustment.

      But I have said enough to give you an idea of what the expert handler of a motor boat must understand. It may seem almost a hopeless task, but, as I stated at the beginning of this chapter, patience and application will enable you to overcome all difficulties and make the handling of the craft an unalloyed pleasure.

      CHAPTER VI

      Captain and Crew

      When the elder Landon received a report from the principal of the military school on the Hudson to the effect that Alvin led all his classmates in their studies and had not once been brought under discipline, he was glad to fulfil the promise made months before, and bought him a handsome motor launch, the selection of which was left to the youth himself. The craft was shipped to Portland, Maine, there set afloat in the capacious bay and sped northeastward for forty miles or so, to the bungalow which the banker had erected a year before on Southport Island. The retreat was to be used by him and his family as a restful refuge from the feverish work which kept him in New York most of the year, with occasional flying trips to the great cities in the West or as far as the Pacific coast.

      One condition the parent insisted upon: Alvin was not to run the launch alone until an expert pronounced him qualified to do so. Thus it was that when the boat headed up Casco Bay, Captain Abe Daboll, from the factory, was aboard and directed things. He had overseen the construction of the launch and knew all about it from stem to stern. He was there under engagement to deliver it to the bungalow, or rather as near as he could approach the building, and to remain and instruct Alvin in every point necessary for him to know.

      Several facts joined to make the youth an apt pupil. He was naturally bright and was intensely interested in all that related to motor boats. While awaiting the completion of his launch, he read and studied many catalogues, circulars and books relating to such craft, and rode in a number. He asked questions and studied the working of the machinery and handling of the launch until his instructor looked at him in wonderment.

      "I never saw your equal," he said admiringly; "by and by you will be answering my questions and telling me how to run things."

      The smiling youth knew this was exaggeration, for something new seemed to be turning up continually, and there were turns where he thought he knew the way, only to find when put to the test that he was totally ignorant. But as I said, he learned fast and after a week's stay at the home of Mr. Landon, during every day of which – excepting Sunday – the two went on a cruise with Alvin at the helm, the man said that nothing more remained for him to show his pupil. This remark followed a stormy day when the launch went far south beyond Damariscove Island and was caught in a rough sea.

      "It was the real test," said the expert to the banker. "I never raised my hand or made a suggestion when we were plunging through the big seas, for neither was necessary. You needn't be afraid to trust yourself with him anywhere and in any weather."

      Now that I am through with my rather lengthy, but perhaps necessary introduction, let us proceed with the story I have set out to tell.

      On the morning following the battle of Alvin with his assailants, and his pleasing meeting with Mike Murphy, the youth called at the home of the Irish lad, carrying in his hand a yachting cap in addition to the one he wore on his own head. Across the front were the gilt letters Deerfoot.

      "I bought an extra one when I had my suit made," he explained, "and it looks to me as if it will fit you. A straw hat isn't handy to wear when sailing, even though you may loop the string around its band into your button hole. If the season was not so far along, I should order a yachting suit for you, Mike. You know a mate ought to be in uniform. But we shall have to wait till next summer."

      The grinning lad gingerly took the white cap in hand, turned it about and then pulled it over his crown.