68 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 63 



Table III shows the comparative results in high and low climates 

 in open and closed resorts. The cases, however, could not be ob- 

 tained in first and second stage cases alone, but only of all stages 

 combined. In lowland climates the closed sanatoria show 74 per cent 

 benefited, and the open resorts 58 per cent benefited. In highland 

 climates the closed sanatoria show 84 per cent benefited and the open 

 resorts 76 per cent, exhibiting the relative superiority of sanatorium 

 over open resort treatment in the two classes of climates, respec- 

 tively. Doubtless the sanatorium cases were on the whole in better 

 condition upon first coming under treatment than those in the open 

 resorts and, therefore, the superiority of sanatorium treatment over 

 open methods is probably not as great as it appears here ; but, never- 

 theless, even if the material were exactly the same, the sanatoria 

 would show a greater percentage of benefited over the open resorts. 



Table III also proves that climate exercises a beneficial influence 

 over patients in closed sanatoriums as well as in open resorts. In 

 all stages combined the percentage of benefited in sanatoria in 

 low climates was 74 per cent, while in high climates it was 84 per 

 cent. 



In the first and second stage cases combined (see in Table I), 

 the difference in favor of mountain sanatoria is still greater — low- 

 land sanatoria 71 per cent ; highland sanatoria 86 per cent.' 



The following is the classification of the National Association for 

 the Study and Prevention of Tuberculosis adopted in May, 19 13. 

 The data given in the table on page 69 are given in terms generally 

 used up to that time. 



CLASSIFICATION OF SUBSEQUENT OBSERVATIONS 



Apparently Cured : All constitutional symptoms and expectoration with bacilli 

 absent for a period of two years under ordinary conditions of life. 



Arrested: All constitutional symptoms and expectoration with bacilli absent 

 for a period of six months; the physical signs to be those of a healed 

 lesion. 



Apparently Arrested: All constitutional symptoms and expectoration with 

 bacilli absent for a period of three months; the physical signs to be 

 those of a healed lesion. 



Quiescent: Absence of all constitutional symptoms; expectoration and bacilli 

 may or may not be present; physical signs stationary or retrogressive; the 

 foregoing conditions to have existed for at least two months. 



Improved: Constitutional symptoms lessened or entirely absent; physical 

 signs improved or unchanged; cough and expectoration with bacilli usu- 

 ally present. 



Unimproved : All essential symptoms and signs unabated or increased. 



Died. 



"■ Dr. S. E. Solly, in the Philadelphia Medical Journal, December i, 1900. 



