Inventions of the Great War

by A. Russell Bond

New York, May, 1919

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[CONTENTS]

CHAPTER		PAGE
I	The War In and Under the Ground	[3]
II	Hand-Grenades and Trench Mortars	[20]
III	Guns that Fire Themselves	[41]
IV	Guns and Super-Guns	[62]
V	The Battle of the Chemists	[85]
VI	Tanks	[107]
VII	The War in the Air	[123]
VIII	Ships that Sail the Skies	[148]
IX	Getting the Range	[169]
X	Talking in the Sky	[184]
XI	Warriors of the Paint-Brush	[209]
XII	Submarines	[232]
XIII	Getting the Best of the U-Boat	[253]
XIV	"Devil's Eggs"	[276]
XV	Surface Boats	[298]
XVI	Reclaiming the Victims of the Submarines	[310]
	Index	[339]

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[LIST OF ILLUSTRATIONS]

Oil-tempering the lining of a big gun	[Frontispiece]
	FACING PAGE
Lines of zig-zag trenches as viewed from an aëroplane	[8]
French sappers using stethoscopes to detect the mining operations of the enemy	[9]
A 3-inch Stokes mortar and two of its shells	[36]
Dropping a shell into a 6-inch trench mortar	[36]
The Maxim machine-gun operated by the energy of the recoil	[37]
Colt machine-gun partly broken away to show the operating mechanism	[37]
The Lewis gun which produces its own cooling current	[44]
The Benèt-Mercié gun operated by gas	[44]
Browning machine-gun, weighing 34½ pounds	[45]
Browning machinw-rifle, weight only 15 pounds	[45]
Lewis machine-guns in action at the front	[52]
An elaborate German machine-gun fort	[53]
Comparative diagram of the path of a projectile from the German super-gun	[60]
One of our 16-inch coast defence guns on a disappearing mount	[61]
Height of gun as compared with the New York City Hall	[61]
The 121-mile gun designed by American ordnance officer	[68]
American 16-inch rifle on a railway mount	[69]
A long-distance sub-calibered French gun on a railway mount	[76]
Inside of a shrapnel shell and details of the fuse cap	[77]
Search-light shell and one of its candles	[77]
Putting on the gas-masks to meet a gas cloud attack	[84]
Even the horses had to be masked	[85]
Portable flame-throwing apparatus	[85]
Liquid fire streaming from fixed flame-throwing apparatus	[92]
Cleaning up a dugout with the "fire-broom"	[93]
British tank climbing out of a trench at Cambrai	[112]
Even trees were no barrier to the British tank	[113]
The German tank was very heavy and cumbersome	[113]
The speedy British "Whippet" tank that can travel at a speed of twelve miles per hour	[120]
The French high-speed "baby" tank	[120]
Section through our Mark VIII tank showing the layout of the interior	[121]
A Handley-Page bombing plane with one of its wings folded back	[128]
How an object dropped from the Woolworth Building would increase its speed in falling	[129]
Machine-gun mounted to fire over the blades of the propeller	[136]
Mechanism for firing between the blades of the propeller	[136]
It would take a hundred horses to supply the power for a small airplane	[137]
The flying-tank	[144]
An N-C (Navy-Curtiss) seaplane of the type that made the first flight across the Atlantic	[145]
A big German Zeppelin that was forced to come down on French soil	[148]
Observation car lowered from a Zeppelin sailing above the clouds	[149]
Giant British dirigible built along the lines of a Zeppelin	[156]
One of the engine cars or "power eggs" of a British dirigible	[156]
Crew of the C-5 (American coastal dirigible) starting for Newfoundland to make a transatlantic flight	[157]
The curious tail of a kite balloon	[160]
Observers in the basket of an observation balloon	[160]
Enormous range-finders mounted on a gun turret of an American warship	[161]
British anti-aircraft section getting the range of an enemy aviator	[176]
A British aviator making observations over the German lines	[177]
Radio headgear of an airman	[192]
Carrying on conversation by radio with an aviator miles away	[192]
Long distance radio apparatus at the Arlington (Va.) station	[193]
A giant gun concealed among trees behind the French lines	[212]
Observing the enemy from a papier-mâché replica of a dead horse	[213]
Camouflaged headquarters of the American 26th Division in France	[220]
A camouflaged ship in the Hudson River on Victory Day	[221]
Complex mass of wheels and dials inside a German submarine	[240]
Surrendered German submarines, showing the net cutters at the bow	[241]
Forward end of a U-boat	[256]
A depth bomb mortar and a set of "ash cans" at the stern of an American destroyer	[257]
A depth bomb mortar in action and a depth bomb snapped as it is being hurled through the air	[260]
Airplane stunning a U-boat with a depth bomb	[261]
The false hatch of a mystery ship	[268]
The same hatch opened to disclose the 3-inch gun and crew	[268]
A French hydrophone installation with which the presence of submarines was detected	[269]
Section of a captured mine-laying U-boat	[272]
A paravane hauled up with a shark caught in its jaws	[273]
A Dutch mine-sweeper engaged in clearing the North Sea of German mines	[288]
Hooking up enemy anchored mines	[289]
An Italian "sea tank" climbing over a harbor boom	[300]
Deck of a British aircraft mothership or "hush ship"	[301]
Electrically propelled boat or surface torpedo, attacking a warship	[304]
Hauling a seaplane up on a barge so that it may be towed	[305]
Climbing into an armored diving suit	[320]
Lowering an armored diver into the water	[320]
A diver's sea sled ready to be towed along the bed of the sea	[321]
The sea sled on land showing the forward horizontal and after vertical rudders	[321]
The diving sphere built for deep sea salvage operations	[324]
The pneumatic breakwater	[325]

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