Wed. p. m., Feb. 19, 1862, Mound City, Ill., -- There has been nothing going on here to break the monotony for a few days past except the arrival of a part of the wounded from Fort Donelson. These, with those that have previously been sent here, make about 400 of them at this hospital. A great many of them are severely wounded. They seem to be in good spirits. Surgeons have flocked in from all...