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 *dispensable in mountain warfare. In India a tripod frame on wheels is employed. The basket frame, which is very light and is carried on the back of a soldier, affords nothing but a rest for the gun. This type of mount has the disadvantage of necessitating, in reality, freehand firing when the barrel is supported near the muzzle; that the operator, when firing continuously, becomes greatly fatigued, and that the accuracy suffers in consequence thereof. The advantages of the tripod and the wheeled carriage have been skillfully combined in the carriage adopted in Germany. In this the gun rests on a sled; this is in turn supported by the carriage proper, which is wheeled. In exceptional cases the gun may be fired from the carriage, but ordinarily it is fired from the sled, which is detached from the carriage for that purpose. This sled permits the gun to be laid at any desired height and enables it to follow the infantry anywhere during an action.

Machine guns can be transported upon larger vehicles capable of being unlimbered; they can also be carried on pack horses or other pack animals, and for short distances by men. Although pack animal transportation enables the guns to follow the troops anywhere, the amount of ammunition that can be carried along is limited, and the opening of fire is retarded, since gun and tripod must first be assembled; the opening of fire may even be delayed when a pack animal falls; ammunition cannot be carried on the gun; and the animals get sore backs even if pack saddles are carefully adjusted.

2. THE POWER OF MACHINE GUNS.

The machine gun is noted for its adaptability to any terrain, and the constancy of its high rate of fire as compared with that of a body of infantry, which decreases with the