Estimations of the hemoglobin and morphologic constituents of the blood have been determined on large groups of normal persons under varying conditions. Further statistical inquiry would be useless, yet there are certain data, acquired in semipathologic investigations, that are still open to fruitful inquiry. It is with events of this sort that the present paper concerns itself.
There is a large group of ambulant persons, neither ill nor well, who every day subject themselves to medical inquiry. Among them major physical damage is the exception, and subjective functional disturbance the rule. They are the people with elusive focal infection, malnutrition, disturbed gastro-enterologic function, neurocirculatory asthenia, etc. Persons of this type as well as others with organic lesions in whom no marked changes in the blood were evident form the basis for the present survey. No frank diseases of the blood or other unusual variants were included in the 2,562 cases