In Part B an attempt has been made to collect illustrations of aeroplanes of the past which for one reason or another possess an historical interest. This section is remarkable for two totally different things (1) the early anticipations of some modern practice, and (2) the past prevalence of certain other ideas which are now totally extinct. Part C deals with aero-engines. It is mainly remarkable--in comparison with past issues--for the large number of engines which have ceased to exist. It is probably still too ample; as a year hence quite half the makers still recorded are likely to disappear. The mere ability to construct motor car engines is no longer of value. The aeroplane engine designer needs to be a specialist. The absolutely ideal aero-engine no doubt yet remains to be produced; but meanwhile the tendency of users to concentrate upon fewer makes is increasingly evident, despite the fact that the best engine for one particular type of machine is not necessarily the best for some other type. In conclusion I tender my most grateful thanks to all those who have so kindly collaborated with or for me in the various sections. The book is still some way from being near my ideal, but I have every hope that this edition will be generally considered a very considerable improvement upon previous issues. FRED T. JANE. _Bedhampton,_ _Hants.,_ _England._ GLOSSARY OF TECHNICAL TERMS, Etc. ENGLISH. | DUTCH. | FRENCH. | GERMAN. | ITALIAN. ----------------------------------------------------------------------------------------- Abaft | Achterste deel | Arriere | Hinter | A poppa Accessories | Onderdeelen | Accessoires | Zubehoer | Accessori Accumulator | Accumulator | Accumulateur | Akkumulator | Accumulatore ~AEROPLANE~ | Dekvlieger | Aeroplane | Drachenflieger | Aereoplano Aeronaut | Luchtvaarder | Aeronaute | Luftschiffer | Aereonauta | | Aviateur | | Aerostat | Luchtbal | Aerostat | Freiballon | Aereostato Aft | Achterdeel | Arriere | Hinten | Addietro After (rear) | Achter | Arriere | Hinterer | Poppa Air-cooled | Luchtgekoeld | Refroidit par | Luftgekuhlt | Raffredda ad | | Pair | | aria Angleiron | Hoekyzer | Corniere | Eck Schiene | Ferro ad angolo Anti-friction | Wit metaal | Metal | Lagermetall | Metallo beanco metal | | anti friction | | (anti frizione) | | on regule | | Aviation | Vliegtechniek | Aviation | Flugtechnik | Aviazione