In 1815 was constructed, on the octagonal tower of the east, the great copper cupola furnished with apertures for telescopes, the floor of which moves round, so that the astronomer in observation can follow the revolutions of the stars throughout the night. This revolving dome, the largest known in the scientific world, has a diameter of about thirteen metres. In its centre is the immense parallactic telescope of Bruner. It is nine metres long and thirty-eight centimetres in diameter. Mention must be made, in other parts of the edifice, beneath smaller cupolas, of hydrometers for measuring the rain, the equatorial telescope of Secrétan[{103}] and Eychens, together with thermometers, regulators, telegraphic and registering apparatus, Gamby’s mural circle, micrometers, the great meridian circle, and the immense telescope, one of the four largest telescopes in the world, furnished with a mirror silvered by the Foucourt process and having a diameter of 120 centimetres.
The Observatory avenue was the scene of a tragic event on the 7th of December, 1815, when, at daybreak, in front of the wall of a public dancing-place, known as the Closerie des Lilas, Marshal Ney, condemned to death by sentence of the Court of Peers, was shot. Marshal Ney, Duke of Elchingen and Prince of Moscow (or of “Moskowa,” the Moscow river), after gaining distinction in all Napoleon’s campaigns, found himself, under the Restoration, in 1814, charged with the duty of seizing his former chief, who had just disembarked from Elba, and bringing him as a prisoner to Paris. Though far from being an enthusiastic supporter of the Bourbons, Ney considered that after the arrangements of Vienna and the pacification of Europe, Napoleon had committed a serious offence in coming back to France. Marshal Soult, then Minister of War, sent him to the south of France, where he was to take measures against Napoleon from headquarters at Besançon. Before proceeding on his mission Ney had an audience of Louis XVIII., in the course of which, speaking of Napoleon, he promised to bring him back “in an iron cage.” Arriving at Besançon, Ney learned that the Count of Artois, brother of the king, had gone to Lyons, where he at once wrote to the count saying that as the small number of troops at Besançon did not require his presence in that town, he begged his royal highness to employ him near his person, and, if possible, as commander of the vanguard; desiring, as in all other circumstances, to give proofs of his zeal and fidelity. On the day following, M de Maillé, the count’s first gentleman of the chamber, went to inform the marshal of the prince’s departure from Lyons and of Bonaparte’s arrival at Grenoble. Ney thereupon decided to move his headquarters to Lons-le-Saunier, “resolved,” as he wrote to the Minister of War, “to attack the enemy on the first favourable occasion.” On reaching Lons-le-Saunier, he heard that Napoleon had entered Lyons, on which he concentrated his forces without delay, and gave instructions to his generals. His orderly officer having told him that the soldiers in their excitement were on the point of breaking out into mutiny, and were shouting “Vive l’Empereur,” he replied, “They must fight. I will myself take a gun from the hands of a grenadier. I will begin the action, and will shoot the first man who refuses to follow me.” The next day, on the 13th of March, Ney was informed that Bonaparte was being everywhere received with acclamation, and that everywhere the troops sent against him were joining his standard. At Bourg, Maçon, and Dijon the re-establishment of the Empire had been proclaimed; and the artillery, which had been ordered to join the Royalist army, had gone over to Napoleon’s forces. In presence of this irresistible movement, the marshal fell into a state of the utmost perplexity. On the night of the 13th emissaries from Bonaparte came to see him. They declared that the return of Napoleon met with the approval of England and Austria; told him that his soldiers would certainly abandon him, and explained to him, by narrating the triumphal progress of his former chief, how impossible he would find it to act against the current of public opinion. All this had a great effect upon Ney. Uncertain, shaken in his resolution, he consulted the two principal generals, Lecourbe and Bourmont, serving under his orders, and, on the ground that the public current was irresistible, determined to abandon the Royalist cause. Forgetting all his promises, all his emphatic protestations of loyalty, he joined the side that was now triumphant. He assembled his troops in the public square of Lons-le-Saunier on the morning of the 14th, and appeared in the midst of them surrounded by his staff. Drawing his sword, and in a loud impressive voice, he read the following proclamation, which had been handed to him by Napoleon’s envoys:—“Officers, under-officers, and soldiers. The cause of the Bourbons is lost for ever. The dynasty adopted by the French nation is about to reascend the throne. To the Emperor Napoleon, our sovereign, alone belongs the right of reigning for our dear country. Let the Bourbon nobility make up its mind to leave the country once more, or consent to live in the midst of us. What, in either case, does it matter? The sacred cause of liberty and independence will suffer no more from their fatal hands. They wished to tarnish our military glory; but they made a mistake. This glory is the fruit of actions too noble ever to be forgotten. Soldiers, these are no longer the times in which nations can be governed by stifling their rights. Liberty triumphs at last, and Napoleon, our august emperor, will establish it on durable foundations. Henceforth this cause shall be ours and that of[{104}] France. Let the brave men I have the honour to command take this truth to their hearts.
PLACE DE L’OBSERVATOIRE.
“Soldiers, I have often led you to victory. I will now conduct you to that immortal phalanx which the Emperor Napoleon is leading towards Paris, and which will arrive there within a few days, when our hopes and our happiness will be for ever realised. Long live the Emperor! Lons-le-Saunier, March 13, 1815, Marshal of the Empire, Prince de la Moskowa.”
From the very first words of this proclamation the soldiers, who hated the Bourbons, raised frantic acclamations. A furious joy, says M. Thiers, broke out like thunder in the ranks. Placing their shakos at the end of their muskets, they raised them in the air and cried out with significant violence, “Vive l’Empereur! Vive le Maréchal Ney!” Then they broke the ranks, rushed headlong towards the marshal, and kissing, some his hands, others the skirts of his coat, thanked him after their manner for having accomplished the desire of their hearts. Those who could not get near him surrounded his aides-de-camp; rather embarrassed at receiving homages which they certainly did not deserve, for they were strangers to the sudden change that had been brought about. “We knew,” cried the soldiers, “that you and the marshal would not leave us in the hands of the émigrés.” The inhabitants showed themselves not less enthusiastic than the troops; and Ney returned to his quarters under the escort of an excited crowd, frantic with joy. When, however, he found himself at home, he read in the countenances of his aides-de-camp uneasiness and even disapproval. One of them, a former émigré, broke his sword, saying at the same time: “You should have told us beforehand, M. le Maréchal. You should not have made us witnesses of such a sight.”
“And what would you have had me do?” replied Ney. “Could I stop the advancing sea with my hands?”
Others, while admitting that it was impossible to make the soldiers fight against Napoleon, expressed their regret at his having undertaken, at such a short interval, two such contrary parts.
“You are children,” replied the marshal. “It is necessary to do one thing or another. Can I[{105}] go and hide myself like a coward to avoid the responsibility of events beyond me. Marshal Ney cannot take refuge in the dark. Besides, there is only one way to diminish the evil: by taking a decided part at once so as to avert civil war; to get into our hands the man who has returned and prevent him from committing follies. For,” he added, “I am not giving myself over to a man but to my country; and if this man wished to lead us back once more to the Vistula, I would not follow him.” Having treated in this manner those who blamed him. Marshal Ney received at dinner, besides the generals, all the regimental chiefs with the exception of one who refused to come. After the defeat of Waterloo, in which he is represented by French historians as everywhere seeking death, Ney was brought before the Chamber of Peers, and for his disloyalty condemned to death.