In Maryland, before December was over, there were a few cold days, and during January we had two or three different falls of snow; but for the most part the weather remained very mild until the latter end of January, when a sharp north-west wind set in. The keenness of this wind in winter is prodigious, and surpasses every thing of the kind which we have an idea of in England. Whenever it blows, during the winter months, a frost immediately takes place. In the course of three days, in the present instance, the Susquehannah and Delaware rivers were frozen over; a fall of snow took place, which remained on the ground about two feet deep, and there was every appearance of a severe and tedious winter. Before five days, however, were over, the wind again changed, and so sudden was the thaw that the snow disappeared entirely on the second day, and not a vestige of the frost was to be seen, excepting in the rivers, where large pieces of ice remained floating about. It was about the middle of December when I reached Baltimore; but I was deterred from going on to Philadelphia until the frosty weather should set in, by the badness of the roads; for they were in such a state, that even the public stages were prevented from plying for the space of ten or twelve days. The frost soon dried them, and rendered them as good as in summer. I set out when it was most severe. At day-break, the morning after I left Baltimore, the thermometer, according to Fahrenheit, stood at 7°. I never observed it so low during any other part of the winter. [Sidenote: INTENSE COLD.]