Under the head of general diseases proper, we will first call attention to those which are dependent upon general disturbances of nutrition, and which, although in some instances involving numerous local derangements, are not known to be dependent upon any specific local disease or morbid condition. First among diseases of this class, as the most frequent of all, we will call attention to-


This is a disease which is characterized by deficiency in the red blood corpuscles and in the nutritive elements of the blood. There are two varieties, acute and chronic.