In connection with the professional department proper, again the attainment of the most satisfactory results from the standpoint, both of economy and efficiency, is dependent upon the capacity and co-operation of the responsible personnel. There has been much discussion in regard to the number of professional personnel doctors, nurses, attendants, etc., and on this subject there has been apparently wide differences of opinion. However, these differences have been based upon differences of viewpoints of what the actual conditions to be met were. A definite agreement has been reached in regard to the required personnel, nurses, doctors, attendants, social service, workers, etc., to each two hundred patients in a hospital caring for all acute patients, whether they be major surgical, acute active neuro-psychiatric, active tuberculosis, or other type of acute condition requiring active, constructive treatment. As a matter of fact, however, we all know that in none of our Veterans’ Hospitals, especially the larger ones of 500 to 1000 or more beds, are all the patients or even a majority of them represented by this type of patients, on the contrary we have a large group of convalescent patients who require professionally very much less attention from the standpoint of active constructive treatment, dietetic attention, etc., and hence require vastly less personnel, and the expense of their maintenance in the hospital will be very greatly reduced from that of the acute type. Again, we have another group which represents the semi-domiciliary type, many of whom require very slight constructive treatment, and yet they belong to a type of patients who are capable of being finally rehabilitated and restored to an earning status in life. This group requires still less care than the former, and naturally less personnel and proportionately less per capita cost to the institution caring for them. Lastly, we pass to a purely domiciliary group who are to a large measure permanently disabled and are, therefore, many of them, to be permanent charges oh the Veterans’ Hospitals. The great majority of the latter group will require little or no special treatment, but will require only general care and maintenance. In this group we are dealing with a type who will represent the minimum per capita cost. As time goes on we shall realize, especially in our larger hospitals, that the above condition will exist to a larger and larger measure and the necessity of a very close checking system and a very careful classification of the patients along the lines indicated above will be a matter of the very highest importance.