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But that would be a queer thing to do. No, I think there's some mystery that I haven't gotten to the bottom of yet. But I'm going to." "Good!" exclaimed Mr. Damon. "I'll help you. But can you run your boat back home?" "Not without fixing it a bit. I must brace up that tank and put in a new high-tension wire from the spark coil. I can do it here, but I'd rather take it to the shop.

It was here that Biggs came after supper, and he and the motor expert got going on my high-tension magneto.

The tube T was slipped into a socket containing a primary coil through which usually the discharges of Leyden jars were directed, and the rarefied gas in the small U tube was excited to strong luminosity by the high-tension currents induced in the coil C. When Leyden jar discharges were used to induce currents in the coil C, it was found necessary to pack the tube T tightly with insulating powder, as a discharge would occur frequently between the turns of the coil, especially when the primary was thick and the air gap, through which the jars discharged, large, and no little trouble was experienced in this way.

Bedded down upon solid rock there was a high-tension alternator capable of absorbing the entire output of the mighty turbine. This turbo-alternator was connected to a set of converters from which the energy would flow along three great copper cables the receptors of the lifeboats being altogether too small to carry the load to the now completely exhausted accumulators of the "Forlorn Hope."

"Well, little fellow-conspirator against the peace and dignity of the Jovians, I don't know just where we are, but wherever it is, we're here. We got away clean, and as long as we don't use any high-tension stuff or anything else that they can trace, I think we're as safe as money in a bank."

Upon one side was a horrible and gigantic brain, of undreamed of power; upon the other side a strong man, fighting for all that life holds dear, wielding against that monstrous and frightful brain a weapon wrought of high-tension electricity, applied with all the skill that earthly and Osnomian science could devise.

All high-tension apparatus was shielded and grounded, so that no stray impulses could reveal to the possible detectors of the Jovians the presence of this foreign power plant.

The motor-bicycle was a wondrous thing, but as capricious and delicate as a horse. For a trifle, for nothing at all, it would cease to function. The high-tension magneto and the float-feed carburetter, whose invention was to transform the motor-bicycle from an everlasting harassment into a means of loco-motion, were yet years away in the future. However, the jar had done no harm.

Through the delicately adjusted, complex mechanisms the destroying beams tore. At their touch armatures burned out, high-tension leads volatilized in crashing, high-voltage sparks, masses of metal smoked and burned in the path of vast forces now seeking the easiest path to neutralization, delicate instruments blew up, copper ran in streams like water.

Ignition is by two high-tension magnetos, and a compressed air self-starting arrangement is provided. Two oil pumps are fitted for lubricating purposes, one of which forces oil to the crankshaft and connecting-rod bearings, while the second forces oil to the valve gear, the cylinders being so arranged that the oil which flows along the walls cannot flood the lower cylinders.