THE ZEPPELIN DORNIER C3: Three-quarter front view.

THE ZEPPELIN DORNIER C3: Front view.

Zeppelin-Dornier C3 monoplane

THE ZEPPELIN-STAAKEN MONOPLANE: Three-quarter front view.

The Zeppelin-Staaken Monoplane: View of the engine nacelle with cowling and radiator removed. In this photograph may be seen the very deep front wing spar, and the opening through which the mechanic crawls into the engine housing.

The Zeppelin-Staaken Monoplane: View of the engine nacelle from behind.

THE ZEPPELIN-STAAKEN MONOPLANE: Three-quarter rear view.

A new Zeppelin-Staaken Monoplane: Our photograph, the first to be published in this country, shows the wind channel model of this new machine which is now being built at the Zeppelin works. This machine, it will be seen, will have two engines only, placed comparatively close together, so that the turning moment when one engine stops should be quite small.

View inside the cabin of the D.H.18.

Pictorial diagram of passenger accommodation, etc., in the D.H.18.

THE D.H.18: The engine unit is detached by undoing a few bolts in the four corners. The lower sketch shows the fitting in the lower starboard corner.

THE D.H.18: From left to right the sketches show: Ball-and-socket joint attachment of telescopic undercarriage strut to lower longeron. Detail of the rubber shock-absorber arrangement. Attachment of struts to wheel axle.

D.H.18 450hp Napier 'Lion' engine

A THAMES AERIAL IDYLL: The Lion-engined Vickers "Viking" passes the Houses of Parliament towers.

THE THAMES AS AN AIR POR: Vickers Amphibian "Viking III," 450 h.p. Napier "Lion" engine, continues the tests. 1. The "Viking" on "The Hard" outside Doulton's. Note the barge in the foreground. 2. Going into the water again. Note the wheels are down. 3. Afloat, with the wheels Just beginning to rise out of the water. 4. Off. The wheels are now quite dear of the water.

LONDON PARIS SERVICE RESUMED: AT WADDON AERODROME: The re-starting from this aerodrome on March 21 of the cross-Channel service. (1) Lord Londonderry, after inspecting Messrs. Instone's Vickers-Vimy-Rolls machine; (2) Passengers embarking with luggage. On left Mrs. Alec Rae, wearing medals for nursing in France, and, right, Mrs. Barnard. (3) The pilot, Mr. Barnard, whose 352nd cross-Channel trip it was, fixes a new flag on his 'bus. (4) In centre, Lord Londonderry, Under-Secretary of State for Air, who attended the restarting of the service; on left, Mr. S. Instone, and on right, Mr. T. Instone, whose firm are responsible for this particular service. (5) The 'bus taking off for Paris.

THE VICKERS VIMY-COMMERCIAL AMBULANCE MACHINE: The door through which "stretcher cases" are placed in and taken out of the machine.

THE VICKERS VIMY-COMMERCIAL AMBULANCE MACHINE: Pictorial sectional views showing arrangement of racks for stretchers, etc.

TESTING THE SAUNDERS "KITTIWAKE": Mr. F. Warren Merriam getting off in good style at Cowes. During the past few weeks Mr. Merriam has been putting this machine through her paces and is now convinced that she is quite O.K. The variable camber gear has been found to work very well, and with the wings cambered the machine gets off very quickly indeed, in spite of her somewhat heavy power loading. A full description of the "Kittiwake" appeared in our issue of September 9, 1920.

The Supermarine oil-prospector: This view shows the special camera-manhole in the bottom of the hull near the bows.

One of the two Supermarine flying boats which are being sent on an oil-prospecting expedition to South America.

The Jacuzzi Seven-Seater Monoplane: Front and side views.

The Jacuzzi Seven-Seater Monoplane: Close-up view, showing the cabin, engine, etc.

THE VICKERS-SAUNDERS "VALENTIA" FLYING BOAT: The engines are 600 h.p. Rolls-Royce "Condors," mounted on pairs of Vees between the wings.