A.D. 1843. Blight seized on the potato crop this year throughout the United States, and also in British America. Epidemic erysipelas, known by the popular name of ‘the black tongue,’ broke out in November, 1843, in Ripley county, United States, and traversed most of the townships of the Delaware, Dearborn county, &c. This disease, Dr. Sutton says, “has either assumed several characters, or we have several epidemics traversing the country together: one was erysipelas connected with cynanche tonsillaris, or swelling of some of the lymphatic glands in the throat; and another was considered to be a typhoid pneumonia, sometimes accompanied by enlargement of the axillary glands. These two diseases,” continued the writer, “have been so intimately connected in my practice, that it has been a question to me whether the last was not a pulmonic erysipelas, the premonitory symptoms in each disease being alike, the character of the fever in each being the same, and it was often the case that one form of the disease changed into that of the other. The disease was not generally fatal.” Boston, in the autumn of this year, was visited by an epidemic fever; it prevailed also at a place called Erie in the county of New York, during the months of October and November. This little town, or rather settlement, Erie, is made up of some half-dozen houses, containing a population of forty-three persons, of which number twenty-eight were seized between the 19th November and 7th December, ten of them dying of the disease. Some disputes existed in this little community, and the generality of them were of opinion that the wells had been poisoned by some evil-disposed persons: there was not, however, the least foundation for any such supposition. The disease commenced with rigors, chills, pain in the loins and head; typhoid symptoms supervened, the tongue becoming brown and dry; low muttering delirium was noticed, also a cough, with expectoration of a muco-purulent character. Another small town which about this period was visited by a very fatal disease, yellow fever, is an inland settlement in Wilkinson county, Mississippi, containing a population of 750 inhabitants. It is situated about forty miles from Natchez, on high ground, 340 feet above the level or bank of the Mississippi with a gradual slope in all directions; there is no creek, pond, or low land near the town,--in short, on a review of the town and surrounding country, it would be pronounced to be one of the most eligible sites in the south for a healthy settlement. At the time there was no yellow fever prevalent at New Orleans,--in fact, there had not been any case of the disease in any place along the river; consequently it could not have been imported. Nearly every one in the town was seized; and the mortality was great, seven to ten dying daily in so small a population for the first week. The disease was very rapid in its progress; the patients were suddenly seized with violent pains in the head and loins,