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It is not advantageous to withdraw the whole amount of energy put in; although its charging capacity is as much as 370 ampere hours, we do not use more than 80 per cent., or 300 ampere hours; hence, if we discharge these accumulators at the rate of 40 amperes, we obtain an almost constant current for 71/2 hours: one cell gives an E.M.F. of two volts.

The people of God coöperate with atheists; the most skilful accumulators of property ally themselves with communists; the peculiar and chosen race touch the hand of all the scum and low castes of Europe! And all this because they wish to destroy that ungrateful Christendom which owes to them even its name, and whose tyranny they can no longer endure.

The outer screen is drawing five hundred and forty thousand!" They stared at the meter in amazement. It was incredible, even after they had seen those heptagons in action, that at such extreme range any offensive beam could be driven with such unthinkable power power requiring for its neutralization almost the full output of the prodigious batteries of accumulators carried by the Sirius!

But to get going again, the receptors receive the beam and from them the power is sent to the accumulators, where it is stored. These accumulators are an outgrowth of the storage battery. The theory of the accumulator is...." "Lay off the theory, please!" the listener interrupted. "I understand perfectly without it. Energy is stored in the accumulators you put it in and take it out.

The last vessel of the Triplanetary armada converted and the resulting metal stored away in their capacious reservoirs, the Nevians turned their attention upon the stronghold of the pirates. There ensued a battle royal. For this vast planetoid was no feeble warship, depending solely upon the limited power available in its accumulators.

Accumulators of this kind are highly useful as reservoirs of electricity for maintaining the electric light, or working electric motors in tramcars, boats, and other carriages. In the year 1821 Professor Seebeck, of Berlin, discovered a third source of electricity.

The aged scientist used no tools whatever, as we understand the term. His laboratory was a power-house; at his command were the stupendous forces of a battery of planetoid accumulators, and added to these were the fourth-order, ninth-magnitude forces of the disintegrating copper bar.

"It is home, and will be until we get one of our own on earth," and after Stevens had read his meters, learning with satisfaction that the full current was still flowing into the accumulators, he began to cut up the meat. "Now that you've got the power-plant running at last, what next?" asked Nadia, piling the cuts in the freezer.

His admirable discovery led to many another. Hence is sprung a pleiad of inventors, its brightest star being our great Joseph Jackson. To Jackson we are indebted for those wonderful instruments the new accumulators.

The grave danger which formerly existed as a result of the poisonous fumes, emanating from the storage batteries and accumulators, has been reduced to a minimum. In every respect, except that of space, conditions of life in a submarine have been brought to a point where they can be favourably compared with those of boats navigated on the surface of the water.