Dr. Marsden, general superintendent of the Royal Free Hospital, reports of the four cases now there:—41 Arthur Abbott, improving, but likely to lose the sight of both eyes; Hannah Roberts, doing well; Hannah Maria Thompson, doing well; Humphrey Evans, progressing, but very slowly.”Dr. Jenner visited the patients yesterday, by command of the Queen, and stated to them that her Majesty would have done so in person had circumstances not prevented it