One drives two propellers placed in front of the main-planes, and the other actuates a single rear propeller. Normally, both engines run at easy speed; but, should one fail in flight, the other, by being accelerated, will maintain the machine in the air. Its designers and builders are Messrs. Short Brothers. .............................. BUILDING WAR AEROPLANES. In this picture—taken in the Bristol works—skilled artizans are seen busy with the building of the bodies of a consignment of military-type monoplanes. Although apparently frail, these frameworks are—owing to their method of construction—immensely strong. .................................... WEIGHT-CARRYING WAR BIPLANE. By Fitting "extensions" to the upper main-plane of the machine, as seen above, it is possible to achieve sustained flight with two, or even three occupants—or, should necessity arise, with a pilot and an appreciable load of explosives! The actual machine photographed is a Bristol, flying over the Brooklands aerodrome. ............................................. WAR MONOPLANES "VOL PLANE." In the above picture, a two-seated, military type Bristol monoplane is seen descending, with engine stopped and propeller motionless, from a reconnoitring flight. Pilot and passenger are plainly discernable. ............................ MAPS FOR MILITARY AIRMEN. Photo, M. Roe. The French authorities are busy with the preparation of a complete set of "air maps" for the use of the military pilots, when flying from point to point. A section of one of these maps—which are coloured—is illustrated above. ............................................................ THE PILOT’S SEAT. Photo, M. Branger. In the illustration above is seen the driving seat of a military-type Blériot monoplane, with the airman’s map, in its case, fixed immediately before him. .......... PILOT AND "OBSERVER." Photo, M. Roe. The above photograph shows a military-type Breguet biplane, as used in the French manœuvres, with pilot and observer in their places. ............................... MILITARY AIRMAN’S REPORT. Photo, M. Branger. After descending from a reconnoitring flight on a Blériot monoplane, in the French manœuvres, the pilot seen above is imparting details of what he has observed to another officer. ...................................... TRANSPORT OF WAR AEROPLANES Photo, M. Roe. In the manner depicted above—and also by means of motor lorries—were military aeroplanes transported from point to point during the French manœuvres. ...... MOTOR TRANSPORT. Photo, M. Branger. This picture shows how a Breguet military biplane, with its main-planes folded by the sides of its body, can be towed from point to point behind a motor-lorry. ...... TRAVELLING WORKSHOP. Photo, M. Branger. In the French manœuvres, a