Water Vaporized from Lungs and Skin. 



141 



J In computing body-surface the formula of Meeh has been used: 12.312 Vbody-weight. 



Per kilogram per hour. Upon the assumption that the larger body would 

 eliminate a larger amount of water-vapor, it is customary to compare results 

 with different individuals of different body- weight by calculating the results 

 on the basis of per kilogram of body-weight per hour. The results of the 

 water-vapor determinations with the respiration calorimeter at Wesleyan Uni- 

 versity have likewise been computed on this basis and they show again wide 

 variations, ranging from 1 gram per kilogram per hour in the case of a young 

 man, B. N., to 0.42 gram per kilogram per hour with the subject H. F. The 

 average of all experiments was 0.61 gram per hour. 



Per square meter of body-surface per hour. Inasmuch as the water-vapor 

 is continually being given off from the surface of the body, it is reasonable to 

 suppose that there would be an approximate relationship between body-surface 

 and the water vaporized. Consequently it is important to compare the different 

 experiments with different subjects on the basis of per square meter of body- 

 surface per hour. The area of the body-surface has been computed according 



to the well-known formula of Meeh, 1 or S = KvW, in which K for man = 



'Meeh, Zeitschr. f. Biol., 1S79, 15, p. 425. 



