As the Members of this Society afforded to M. Chevalier an early and warm encouragement and patronage, and readily gave his Tableau de la Plaine de Troye a place in their Transactions, as well as admitted the author to a seat among their number; and as that paper, since the time of its publication, has excited a good deal of interest and speculation, they will, no doubt, hear with pleasure, that it has now received, at least in all its material circumstances, a most ample and satisfactory confirmation.