RENOVATION OF THE BODY. 397 



Absorbed during 24 hours. Discharged during 24 hours. 



Water . . . 2250 grammes. Carbonic acid . . 750 grammes. 



Oxygen . . . 700 " Aqueous vapor . . 500 " 



Albuminous matter . 130 " Perspiration . . 850 " 



Starch and sugar . 300 " Water of the urine . 1200 " 



Fat .... 100 " Urea and salts 70 " 



Salts 20 Feces . . .130 



3500 grammes. 3500 grammes. 



Rather more than 5 per cent., therefore, of the entire bodily weight is 

 absorbed and discharged daily by the healthy adult human subject; 

 and, for a man having the average weight of 65 kilogrammes, a quantity 

 of material, equal to the weight of the whole body, thus passes through 

 the system in the course of twenty days. 



