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the age of invention-第30部分

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to ride the air。 He found time also to describe the new invention in letters to his friends in different parts of the world。

On the 21st of November Franklin set out for the gardens of the King's hunting lodge in the Bois de Boulogne; on the outskirts of Paris; with a quickened interest; a thrill of excitement; which made him yearn to be young again with another long life to live that he might see what should be after him on the earth。 What bold things men would attempt! Today two daring Frenchmen; Pilatre de Rozier of the Royal Academy and his friend the Marquis d'Arlandes; would ascend in a balloon freed from the earththe first men in history to adventure thus upon the wind。 The crowds gathered to witness the event opened a lane for Franklin to pass through。

At six minutes to two the aeronauts entered the car of their balloon; and; at a height of two hundred and seventy feet; doffed their hats and saluted the applauding spectators。 Then the wind carried them away toward Paris。 Over Passy; about half a mile from the starting point; the balloon began to descend; and the River Seine seemed rising to engulf them; but when they fed the fire under their sack of hot air with chopped straw they rose to the elevation of five hundred feet。 Safe across the river they dampened the fire with a sponge and made a gentle descent beyond the old ramparts of Paris。

At five o'clock that afternoon; at the King's Chateau in the Bois de Boulogne; the members of the Royal Academy signed a memorial of the event。 One of the spectators accosted Franklin。

〃What does Dr。 Franklin conceive to be the use of this new invention?〃

〃What is the use of a new…born child?〃 was the retort。

A new…born child; a new…born republic; a new invention: alike dim beginnings of development which none could foretell。 The year that saw the world acknowledge a new nation; freed of its ancient political bonds; saw also the first successful attempt to break the supposed bonds that held men down to the ground。 Though the invention of the balloon was only five months old; there were already two types on exhibition: the original Montgolfier; or fireballoon; inflated with hot air; and a modification by Charles; inflated with hydrogen gas。 The mass of the French people did not regard these balloons with Franklin's serenity。 Some weeks earlier the danger of attack had necessitated a balloon's removal from the place of its first moorings to the Champ de Mars at dead of night。 Preceded by flaming torches; with soldiers marching on either side and guards in front and rear; the great ball was borne through the darkened streets。 The midnight cabby along the route stopped his nag; or tumbled from sleep on his box; to kneel on the pavement and cross himself against the evil that might be in that strange monster。 The fear of the people was so great that the Government saw fit to issue a proclamation; explaining the invention。 Any one seeing such a globe; like the moon in an eclipse; so read the proclamation; should be aware that it is only a bag made of taffeta or light canvas covered with paper and 〃cannot possibly cause any harm and which will some day prove serviceable to the wants of society。〃

Franklin wrote a description of the Montgolfier balloon to Sir Joseph Banks; President of the Royal Society of London:

〃Its bottom was open and in the middle of the opening was fixed a kind of basket grate; in which faggots and sheaves of straw were burnt。 The air; rarefied in passing through this flame; rose in the balloon; swelled out its sides; and filled it。 The persons; who were placed in the gallery made of wicker and attached to the outside near the bottom; had each of them a port through which they could pass sheaves of straw into the grate to keep up the flame and thereby keep the balloon full 。 。 。 。 One of these courageous philosophers; the Marquis d'Arlandes; did me the honor to call upon me in the evening after the experiment; with Mr。 Montgolfier; the very ingenious inventor。 I was happy to see him safe。 He informed me that they lit gently; without the least shock; and the balloon was very little damaged。〃

Franklin writes that the competition between Montgolfier and Charles has already resulted in progress in the construction and management of the balloon。 He sees it as a discovery of great importance; one that 〃may possibly give a new turn to human affairs。 Convincing sovereigns of the folly of war may perhaps be one effect of it; since it will be impracticable for the most potent of them to guard his dominions。〃 The prophecy may yet be fulfilled。 Franklin remarks that a short while ago the idea of 〃witches riding through the air upon a broomstick and that of philosophers upon a bag of smoke would have appeared equally impossible and ridiculous。〃 Yet in the space of a few months he has seen the philosopher on his smoke bag; if not the witch on her broom。 He wishes that one of these very ingenious inventors would immediately devise means of direction for the balloon; a rudder to steer it; because the malady from which he is suffering is always increased by a jolting drive in a fourwheeler and he would gladly avail himself of an easier way of locomotion。


The vision of man on the wing did not; of course; begin 。with the invention of the balloon。 Perhaps the dream of flying man came first to some primitive poet of the Stone Age; as he watched; fearfully; the gyrations of the winged creatures of the air; even as in a later age it came to Langley and Maxim; who studied the wing motions of birds and insects; not in fear but in the light and confidence of advancing science。

Crudely outlined by some ancient Egyptian sculptor; a winged human figure broods upon the tomb of Rameses III。 In the Hebrew parable of Genesis winged cherubim guarded the gates of Paradise against the man and woman who had stifled aspiration with sin。 Fairies; witches; and magicians ride the wind in the legends and folklore of all peoples。 The Greeks had gods and goddesses many; and one of these Greek art represents as moving earthward on great spreading pinions。 Victory came by the air。 When Demetrius; King of Macedonia; set up the Winged Victory of Samothrace to commemorate the naval triumph of the Greeks over the ships of Egypt; Greek art poetically foreshadowed the relation of the air service to the fleet in our own day。

Man has always dreamed of flight; but when did men first actually fly? We smile at the story of Daedalus; the Greek architect; and his son; Icarus; who made themselves wings and flew from the realm of their foes; and the tale of Simon; the magician; who pestered the early Christian Church by exhibitions of flight into the air amid smoke and flame in mockery of the ascension。 But do the many tales of sorcerers in the Middle Ages; who rose from the ground with their cloaks apparently filled with wind; to awe the rabble; suggest that they had deduced the principle of the aerostat from watching the action of smoke as did the Montgolfiers hundreds of years later? At all events one of these alleged exhibitions about the year 800 inspired the good Bishop Agobard of Lyons to write a book against superstition; in which he proved conclusively that it was impossible for human beings to rise through the air。 Later; Roger Bacon and Leonardo da Vinci; each in his turn ruminated in manuscript upon the subject of flight。 Bacon; the scientist; put forward a theory of thin copper globes filled with liquid fire; which would soar。 Leonardo; artist; studied the wings of birds。 The Jesuit Francisco Lana; in 1670; working on Bacon's theory sketched an airship made of four copper balls with a skiff attached; this machine was to soar by means of the lighter…than…air globes and to be navigated aloft by oars and sails。

But while philosophers in their libraries were designing airships on paper and propounding their theories; venturesome men; 〃crawling; but pestered with the thought of wings;〃 were making pinions of various fabrics and trying them upon the wind。 Four years after Lana suggested his airship with balls and oars; Besnier; a French locksmith; made a flying machine of four collapsible planes like book covers suspended on rods。 With a rod over each shoulder; and moving the two front planes with his arms and the two back ones by his feet; Besnier gave exhibitions of gliding from a height to the earth。 But his machine could not soar。 What may be called the first patent on a flying machine was recorded in 1709 when Bartholomeo de Gusmao; a friar; appeared before the King of Portugal to announce that he had invented a flying machine and to request an order prohibiting other men from making anything of the sort。 The King decreed pain of death to all infringers; and to assist the enterprising monk in improving his machine; he appointed him first professor of mathematics in the University of Coimbra with a fat stipend。 Then the Inquisition stepped in。 The inventor's suave reply; to the effect that to show men how to soar to Heaven was an essentially religious act; availed him nothing。 He was pronounced a sorcerer; his machine was destroyed; and he was imprisoned till his death。 Many other men fashioned unto themselves wings; but; though some of them might glide earthward; none could rise upon the 
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