During the severe winter of 1860 the river Oise was frozen over and the plains of Lower Picardy were covered with deep snow. On Christmas Day, especially, a heavy squall from the north-east had almost buried the little city of Beaumont. The snow, which began to fall early in the morning, increased towards evening and accumulated during the night; in the upper town, in the Rue des Orfevres, at the end of which, as if enclosed therein, is the northern front of the cathedral transept, this was blown with great force by the wind against the portal of Saint Agnes, the old Romanesque portal, where traces of Early Gothic could be seen, contrasting its florid ornamentation with the bare simplicity of the transept gable.