Chapter 4

SANGER'S TEMPERATURES AT HIGH ALTITUDES. 4s.

HAWKIN'S FOG AND HOW TO AVOID IT. 3s.

VAN ZUYLAN'S SECONDARY EFFECTS OF THUNDERSTORMS. 4s. 6d.

DAHLGREN'S AIR CURRENTS AND EPIDEMIC DISEASES. 5s. 6d.

REDMAYNE'S DISEASE AND THE BAROMETER. 7s. 6d.

WALTON'S HEALTH RESORTS OF THE GOBI AND SHAMO. 3s. 6d.

WALTON'S THE POLE AND PULMONARY COMPLAINTS. 7s. 6d.

MUTLOW'S HIGH LEVEL BACTERIOLOGY 7s. 6d.

HALLIWELL'S ILLUMINATED STAR MAP, with clockwork attachment, giving apparent motion of heavens, boxed, complete with clamps for binnacle. 36 inch size, only £2. 2. 0. (Invaluable for night work.) With A. B. C. certificate, £3. 10s. 0d.

Zalinski's Standard Works.

PASSES OF THE HIMALAYAS. 5s.

PASSES OF THE SIERRAS. 5s.

PASSES OF THE ROCKIES. 5s.

PASSES OF THE URALS. 5s.

The four boxed, limp cloth, with charts, 15s.

GRAY'S AIR CURRENTS IN MOUNTAIN GORGES. 7s. 6d.

=A. C. BELT & SON, READING=

SAFETY WEAR FOR AERONAUTS

Flickers! Flickers! Flickers!

=High Level Flickers=

"_He that is down need fear no fall_" _Fear not! You will fall lightly as down!_

Hansen's air-kits are down in all respects. Tremendous reductions in prices previous to winter stocking. Pure para kit with cellulose seat and shoulder-pads, weighted to balance. Unequalled for all drop-work.

Our trebly resilient heavy kit is the _ne plus ultra_ of comfort and safety.

Gas-buoyed, waterproof, hail-proof, non-conducting Flickers with pipe and nozzle fitting all types of generator. Graduated tap on left hip.

=Hansen's Flickers Lead the Aerial Flight= =197 Oxford Street=

The new weighted Flicker with tweed or cheviot surface cannot be distinguished from the ordinary suit till inflated.

Flickers! Flickers! Flickers!

APPLIANCES FOR AIR PLANES

What

"SKID"

was to our forefathers on the ground,

"PITCH"

is to their sons in the air.

The popularity of the large, unwieldy, slow, expensive Dirigible over the light, swift Plane is mainly due to the former's immunity from pitch.

Collison's forward-socketed Air Van renders it impossible for any plane to pitch. The C. F. S. is automatic, simple as a shutter, certain as a power hammer, safe as oxygen. Fitted to any make of plane.

COLLISON 186 Brompton Road _Workshops_, _Chiswick_

LUNDIE & MATHERS Sole Agts for East'n Hemisphere

* * * * *

Starters and Guides

Hotel, club, and private house plane-starters, slips and guides affixed by skilled workmen in accordance with local building laws.

Rackstraw's forty-foot collapsible steel starters with automatic release at end of travel--prices per foot run, clamps and crampons included. The safest on the market.

_Weaver & Denison Middleboro_

AIR PLANES AND DIRIGIBLE GOODS

_=Remember=_

=Planes are swift--so is Death= =Planes are cheap--so is Life=

_Why_ does the 'plane builder insist on the safety of his machines?

Methinks the gentleman protests too much.

The Standard Dig Construction Company do not build kites.

They build, equip and guarantee dirigibles.

=_Standard Dig Construction Co._=

Millwall _and_ Buenos Ayres

* * * * *

Remember

We shall always be pleased to see you.

We build and test and guarantee our dirigibles for all purposes. They go up when you please and they do not come down till you please.

You can please yourself, but--you might as well choose a dirigible.

=STANDARD DIRIGIBLE CONSTRUCTION CO.=

Millwall _and_ Buenos Ayres

* * * * *

HOVERS

POWELL'S Wind Hovers

for 'planes tying-to in heavy weather, save the motor and strain on the forebody. Will not send to leeward. "Albatross" wind-hovers, rigid-ribbed; according to h. p. and weight.

_We fit and test free to 40° east of Greenwich_

L. & W. POWELL 196 Victoria Street, W

* * * * *

Gayer & Hutt

Birmingham AND Birmingham Eng. Ala.

Towers, Landing Stages, Slips and Lifts public and private

Contractors to the A. B. C., South-Western European Postal Construction Dept.

Sole patentees and owners of the Collison anti-quake diagonal tower-tie. Only gold medal Kyoto Exhibition of Aerial Appliances, 1997.

AIR PLANES AND DIRIGIBLES

C. M. C.

Our Synthetical Mineral BEARINGS

are chemically and crystallogically identical with the minerals whose names they bear. Any size, any surface. Diamond, Rock-Crystal, Agate and Ruby Bearings--cups, caps and collars for the higher speeds.

For tractor bearings and spindles--Imperative.

For rear propellers--Indispensable.

For all working parts--Advisable.

Commercial Minerals Co. 107 Minories

* * * * *

Resurgam!

IF YOU HAVE NOT CLOTHED YOURSELF IN A

Normandie Resurgam

YOU WILL PROBABLY NOT BE INTERESTED IN OUR NEXT WEEK'S LIST OF AIR-KIT.

Resurgam Air-Kit Emporium

HYMANS & GRAHAM

1198 Lower Broadway, New York

* * * * *

Remember!

¶ It is now nearly a century since the Plane was to supersede the Dirigible for all purposes.

¶ TO-DAY _none_ of the Planet's freight is carried _en plane_.

¶ Less than two per cent. of the Planet's passengers are carried _en plane_.

_We design, equip and guarantee Dirigibles for all purposes._

Standard Dig Construction Company

MILLWALL and BUENOS AYRES

BAT-BOATS

Flint & Mantel

Southampton

FOR SALE

at the end of Season the following Bat-Boats:

=GRISELDA=, 65 knt., 42 ft., 430 (nom.) Maginnis Motor, under-rake rudder.

=MABELLE=, 50 knt., 40 ft., 310 Hargreaves Motor, Douglas' lock-steering gear.

=IVEMONA=, 50 knt., 35 ft., 300 Hargreaves (Radium accelerator), Miller keel and rudder.

The above are well known on the South Coast as sound, wholesome knockabout boats, with ample cruising accommodation. _Griselda_ carries spare set of Hofman racing vans and can be lifted three foot clear in smooth water with ballast-tank swung aft. The others do not lift clear of water, and are recommended for beginners.

Also, by private treaty, racing B. B. _Tarpon_ (76 winning flags) 137 knt., 60 ft.; Long-Davidson double under-rake rudder, new this season and unstrained. 850 nom. Maginnis motor, Radium relays and Pond generator. Bronze breakwater forward, and treble reinforced forefoot and entry. Talfourd rockered keel. Triple set of Hofman vans, giving maximum lifting surface of 5327 sq. ft.

_Tarpon_ has been lifted _and held_ seven feet for two miles between touch and touch.

_Our Autumn List of racing and family Bats ready on the 9th January._

AIR PLANES AND STARTERS

Hinks's Moderator

¶ Monorail overhead starter for family and private planes up to twenty-five foot over all

Absolutely Safe

_Hinks & Co., Birmingham_

* * * * *

J. D. ARDAGH

I AM NOT CONCERNED WITH YOUR 'PLANE AFTER IT LEAVES MY GUIDES, BUT _TILL THEN_ I HOLD MYSELF PERSONALLY RESPONSIBLE FOR YOUR LIFE, SAFETY, AND COMFORT. MY HYDRAULIC BUFFER-STOP _CANNOT_ RELEASE TILL THE MOTORS ARE WORKING UP TO BEARING SPEED, THUS SECURING A SAFE AND GRACEFUL FLIGHT WITHOUT PITCHING.

Remember our motto, "_Upward and Outward_," and do not trust yourself to so-called "rigid" guide bars

J. D. ARDAGH, BELFAST AND TURIN

ACCESSORIES AND SPARES

CHRISTIAN WRIGHT & OLDIS

ESTABLISHED 1924

Accessories and Spares

Hooded Binnacles with dip-dials automatically recording change of level (illuminated face).

All heights from 50 to 15,000 feet £2 10 0

With Aerial Board of Control certificate £3 11 0

Foot and Hand Foghorns; Sirens toned to any club note; with air-chest belt-driven from motor £6 8 0

Wireless installations syntonised to A. B. C. requirements, in neat mahogany case, hundred mile range £3 3 0

Grapnels, mushroom anchors, pithing-irons, winches, hawsers, snaps, shackles and mooring ropes, for lawn, city, and public installations.

Detachable under-cars, aluminum or stamped steel.

Keeled under-cars for planes: single-action detaching-gear, turning car into boat with one motion of the wrist. Invaluable for sea trips.

Head, side, and riding lights (by size) Nos. 00 to 20 A. B. C. Standard. Rockets and fog-bombs in colours and tones of the principal clubs (boxed).

A selection of twenty £2 17 6

International night-signals (boxed) £1 11 6

Spare generators guaranteed to lifting power marked on cover (prices according to power).

Wind-noses for dirigibles--Pegamoid, cane-stiffened, lacquered cane or aluminum and flux for winter work.

Smoke-ring cannon for hail storms, swivel mounted, bow or stern.

Propeller blades: metal, tungsten backed; papier-maché; wire stiffened; ribbed Xylonite (Nickson's patent); all razor-edged (price by pitch and diameter).

Compressed steel bow-screws for winter work.

Fused Ruby or Commercial Mineral Co. bearings and collars. Agate-mounted thrust-blocks up to 4 inch.

Magniac's bow-rudders--(Lavalle's patent grooving).

Wove steel beltings for outboard motors (non-magnetic).

Radium batteries, all powers to 150 h. p. (in pairs).

Helium batteries, all powers to 300 h. p. (tandem).

Stun'sle brakes worked from upper or lower platform.

Direct plunge-brakes worked from lower platform only, loaded silk or fibre, wind-tight.

_Catalogues free throughout the Planet_

* * * * *

Transcriber's note

The following changes have been made to the text:

Page 30: "passenger's faces" changed to "passengers' faces".

Page 41: "Instead of shuting" changed to "Instead of shutting".

Page 68: "orgie" changed to "orgy".

Page 71: "earth,and water" changed to "earth, and water".

Page 82: "Milwall and Buenos Ayres" changed to "Millwall and Buenos Ayres".