Powder was the article for which there was the most urgent occasion. The soldiers were on the point of wanting it. The magazines were empty. The administrators of the powder-mills were assembled to know what they could do. They declared that the annual produce amounted to three millions of pounds only, that the basis of it was saltpetre drawn from India, that extraordinary encouragements might raise them to five millions; but that no hopes ought to be entertained of exceeding that quantity. When the members of the Committee of Public Welfare announced to the administrators that they must manufacture seventeen millions of pounds of powder in the space of a few months, the latter remained stupified. "If you succeed in doing this," said they, "you must have a method of making powder of which we are ignorant."
This, however, was the only mean of saving the country. As the French were almost excluded from the sea, it was impossible to think of procuring saltpetre from India. The savans offered to extract all from the soil of the Republic. A general requisition called to this labour the whole mass of the people. Short and simple directions, spread with inconceivable activity, made, of a difficult art, a common process. All the abodes of men and animals were explored. Saltpetre was sought for even in the ruins of Lyons; and soda, collected from among the ashes of the forests of La Vendée.
The results of this grand movement would have been useless, had not the Sciences been seconded by new efforts. Native saltpetre is not fit for making powder; it is mixed with salts and earths which render it moist, and diminish its activity. The process employed for purifying it demanded considerable time. The construction of powder-mills alone would have required several months, and before that period, France might have been subjugated. Chymistry invented new methods for refining and drying saltpetre in a few days. As a substitute for mills, pulverized charcoal, sulphur, and saltpetre were mixed, with copper balls, in casks which were turned round by hand. By these means, powder was made in twelve hours; and thus was verified that bold assertion of a member of the Committee of Public Welfare: "Earth impregnated with saltpetre shall be produced," said he, "and, in five days after, your cannon shall be loaded."
Circumstances were favourable for fixing, in all their perfection, the only arts which occupied France. Persons from all the departments were sent to Paris, in order to be instructed in the manufacture of arms and saltpetre. Rapid courses of lectures were given on this subject. They contributed little to the general movement, which had saved the Republic, but they had an effect no less important, that of bringing to light the astonishing facility of the French for acquiring the arts and sciences; a happy gift which forms one of the finest features in the character of the nation.
Notwithstanding so many services rendered by the Sciences, the learned were not less persecuted; the most celebrated among them were the most exposed. The venerable DAUBENTON, the co-operator in the labours of BUFFON, escaped persecution only because he had written a work on the improvement of sheep, and was taken for a simple shepherd. COUSIN was not so fortunate; yet, in his confinement, he had the stoicism to compose works of geometry, and give lessons of physics to his companions of misfortune.
LAVOISIER, that immortal character, whose generosity in promoting the progress of science could be equalled only by his own enlightened example in cultivating it, was also apprehended. As one of the Commissioners for fixing the standard of weights and measures, great hopes were entertained that he might be restored to liberty. Measures were taken with that intention; but these were not suited to the spirit of the moment. The commission was dissolved, and LAVOISIER left in prison. Shortly after, this ever to be lamented savant was taken to the scaffold. He would still be living, had his friends acted on the cupidity of the tyrants who then governed, instead of appealing to their justice.
About this period, some members of the Convention having introduced a discussion in favour of public instruction, it was strongly opposed by the revolutionary party, who saw in the Sciences nothing but a poison which enervated republics. According to them, the finest schools were the popular societies. To do good was then impossible, and to shew an inclination to do it, exposed to the greatest danger the small number of enlightened men France still possessed.
In this point of view, every thing was done that circumstances permitted. A military school was created, where young men from all the departments were habituated to the exercise of arms and the life of a camp. It was called L'École de Mars. Its object was not to form officers, but intelligent soldiers, who, spread in the French armies, should soon render them the most enlightened of Europe, as they were already the most inured to the hardships of war.
Thus, a small number of men, whose conduct has been too ill appreciated, alone retarded, by constant efforts, the progress of barbarism and struggled in a thousand ways against the oppression which others contented themselves with supporting.
At length, the bloody throne, raised by ROBESPIERRE, was overthrown: hope succeeded to terror; and victory, to defeat. Then, the Sciences, issuing from the focus in which they had been concentered and concealed, reappeared in all their lustre. The services they had rendered, the dangers which had threatened them, were felt and acknowledged. The plan of campaign, formed by the scientific men, called to the Committee of Public Welfare, had completely succeeded. The French armies had advanced on the rear of those of the allies, and, threatening to cut off their retreat, not only forced them to abandon the places they had taken, but also marched from conquest to conquest on their territory.