Marconi's transmitting apparatus consisted of electric batteries, an induction coil by which the force of the current is increased, a telegrapher's key to make and break the circuit, and a pair of brass knobs.

The batteries were connected with the induction coil, which in turn was connected with the brass knobs; the telegrapher's key was placed between the battery and the coil.

A power-driven dynamo took the place of the more feeble batteries at Poldhu, converters to increase the power displaced the induction coil, and many sending-wires, or antennae, were used instead of one.

A little forward of the motor is suspended to the keel the cigar-shaped gasoline reservoir, and strung along the top rod are the batteries which furnish the current to make the sparks for the purpose of exploding the gas in the motor.

Many is the King's cruiser, as they say, that has turned her hands up from a sweet sleep, when the look-outs have seen a double decker coming down in the night, with ports up, and batteries lighted but then this can't be any such craft as the Dutchman, since she is, at the most, no more than a large sloop of war, if a cruiser at all.

But upon this ennui fell an electric sparkfrom the old storage-batteries, woman's eyes.

The Constitution was under the fire of the Tripolitan batteries for two hours without losing a man, and was equally fortunate when she ran in a second time and lay within musket-shot of the mole, exposed to the fire of the enemy for three-quarters of an hour.

These Tripolitan batteries mounted one hundred and fifteen guns.

For, when we tired of shooting at the Hun And other Batteries clamoured for their share

Now, on the interest of such a sum we could have from ten to fifteen complete batteries, that is to say, comprising, in addition to the sixty or eighty guns, all the necessary accessories, such as carriages, limbers, caissons, harness, etc.

As he spread out his maps and explained the positions of his batteries and lines, I glanced round his roomat the truckle-bed which filled the length of it, and the deal table over which he was bending, and the wooden chair in which he sat to think out the problems of his task.

Yet beneath the earth here, close to us as well as far away, men crouched in holes waiting to kill or to be killed, and all along the ridges, concealed in dug-outs or behind the low-lying crests, great guns were firing so that their thunder rolled across the ravines, and their smoke-clouds rested for a little while above the batteries.

French batteries were hard at work and their shells came rushing like fierce birds above the trees.

He knew them all, even when they spoke from the enemy's batteries, and as we walked he said alternately, "Départ..

In the open country we could see the battle front, the low-lying marshlands with windmills waving their arms on the far horizon, the ridges and woods in which British and German batteries were concealed, and the lines of trenches in which our men lay very close to their enemy.

Presently the fire became less scattered, and as the appointed hour approached our batteries aimed only in one direction.

I could distinguish the sharp crack of the field batteries and the deeper boom of the heavier guns.

All the time, while the batteries were at work, birds were singing the spring song in ecstatic lyrics of joyfulness, and they went on far flights across a pale blue lake which was surrounded by black mountains of cloud.

A trench, eight feet deep and twelve broad, surrounded the whole fortification; the lines were defended by redoubts and batteries, the gates by half moons.

To put an end to these distresses, Gustavus Adolphus, relying on his numerical superiority, left his lines on the 25th day, forming before the enemy in order of battle, while he cannonaded the duke's camp from three batteries erected on the side of the Rednitz.

The Mare Nostrum approached the mouth of the old harbor having at its right the batteries of the Phare.

VI THE DARK DAYS OF 1862 The dark days of 1862 were in April brightened by the all-important news that Admiral Farragut had succeeded in bringing the Federal fleet, or at least the leading vessels in this fleet, past the batteries of Forts St. Philip and Jackson on the Mississippi, and had compelled the surrender of New Orleans.

The position in which the Queen Charlotte was laid was so admirable that she was only exposed to the fire of three or four flanking guns, while her broadside swept the whole batteries, and completely commanded the mole and marine, every part of which could be seen distinctly from her quarter-deck.

Up to this moment not a shot had been fired, and the batteries were all crowded with spectators, gazing in astonishment at the quiet and regularity which prevailed through all the British ships, and the dangerous vicinity in which they placed themselves to such formidable means of defence.

Field and breaching batteries were mounted on a new principle lately adopted; gabions, earth-bags, chevaux-de-frise, and projectiles were made in the greatest abundance maps, notes, and all the information that could be procured respecting Barbary were transmitted to the war office, where their contents were compared and digested, and a plan of operations was drawn out.