No accident or sickness marred the success which had so far attended the expedition.
"We thought ourselves," says La Perouse, "the most fortunate of navigators, for having reached so great a distance from Europe without having had one invalid or a single sufferer from scurvy. But the greatest misfortune, and one it was impossible to foresee, now awaited us."
Upon the chart of the Port des Français, drawn up by MM. Monneron and Bernizet, the soundings alone remained to be indicated. The naval officers were bound to accomplish the task, and three boats, under the orders of MM. d'Escures, de Marchainville, and Boutin, were selected for the undertaking. La Perouse, acquainted with the somewhat rash zeal of M. d'Escures, advised him on the eve of departure to act with most careful prudence, and only to attempt the soundings in the channel if the sea were smooth.
The boats left at six o'clock in the morning. It was as much a party of pleasure as of duty, as the crews were to hunt, and breakfast under the trees.
"At ten in the morning," says La Perouse, "I saw our little boat return. Somewhat surprised, for I had not expected it so soon, I asked M. Boutin, before he came on deck, whether he had any news. At first I feared an attack from the natives, and M. Boutin's expression was not calculated to reassure me, for it was profoundly sad.
"He soon related to me the terrible disaster he had just witnessed, and from which he had escaped by the presence of mind which enabled him to see the best course to pursue in the dreadful peril. Carried, whilst following his commander, into the midst of breakers caused by the tide rushing with a speed of three or four leagues per hour out of the channel, he thought he could place his boat stern on the breakers; the boat yielding to their force, and being impelled by the tide, would not fill, but would be carried safely outside.
"Soon, however, he saw breakers ahead of his boat, and found himself in the open sea. More concerned for the safety of his companions than for his own, he again approached the breakers, and in the hope of saving some life he again braved them, but was repulsed by the tide; finally, he mounted on M. Mouton's shoulder, in the hope of finding a wider opening. All was in vain; everything had been swallowed up, and M. Boutin returned with the ebb of the tide.
"The sea becoming quieter, this officer had still some hope of finding the boat of the Astrolabe; he had only witnessed the loss of ours. M. de Marchainville was now a quarter of a mile from the danger, that is to say, in a sea as still as the quietest harbour; but, impelled by an imprudent generosity—for all help was quite impossible under the circumstances—this rash young officer, being too high-spirited and too courageous to pause in presence of his friends' danger, flew to their help, threw himself among the breakers, and, a victim to his imprudence and disregard of his chief's orders, perished with him.
"M. de Langle shortly after came on board my ship, as much overcome as myself, and informed me with tears that the misfortune was even greater than I had supposed. We had always made a point, ever since leaving France, of never allowing the two brothers, M. la Borde Marchainville and M. la Borde Boutevilliers, to go on the same service, but on this one occasion he had yielded, as they desired to hunt together; and it was almost wholly on this account that we had, both of us, directed our boats in the way we did, thinking there was as little danger as there is in Brest Harbour in fine weather.
"Several boats were at once despatched in search of the shipwrecked crew. Rewards were offered to the natives if they saved any one; but the return of the sloops destroyed all hope. All had perished."