Copenhagen, Jan, 28.. The fro ft is again fet in with fuch ieverity, ihat.th'e fea is frozen over between this Kingdom and Sweden. ‘Laft night three Swedifh deferters took, advantage of this eircumftance to come here; and two of our foldiers'j .of the Citadel have alfo paffed the fca upon the ice, and retired to Sweden.