Much attention has been excited in France for some few months past by the fall of a large aërolite, which took place in the canton of Montrejeau on the 9th of December last. We have now all the details that we are ever likely to have concerning this remarkable meteor. It fell about seven o'clock in the morning, appearing first in the north-east like a large red-hot bomb, which passed rapidly to the south-west, where it remained stationary for an instant. It then emitted a considerable column of smoke and flame; three seconds after which a loud detonation was heard, followed by a rumbling noise. Although in broad daylight, the little town of Aurignac was completely illuminated by the passage of this aërolite. After the explosion nothing was observed in the sky but a streak of vapour and a small cloud which marked out the direction followed by the meteoric stone, and the place where it exploded. Shortly after this phenomenon two large fragments of the aërolite were picked up in the parishes of Aussan and Clarac; one of these weighed about 90 lbs., and had sunk into the ground for nearly two yards; the other, that fell at Clarac, broke through the roof of a cottage; it weighed from 16 to 20 lbs., and was so hot when first seen that it could not be touched for some time. These blocks present rounded forms, their surface is black and smooth, the interior is formed of a sort of grey substance, not unlike certain volcanic products in structure.