378 THE EXCRETIONS: 



There were discharged : 



By the urine. From the bowels. 



8-8 oz. of sugar. 2 oz. of fat. 



1-3 oz. of urea. 2'5oz. of nitrogenous insoluble faecal 

 15 grains of uric acid. matter & protein-compounds. 



100 grains of extractive matter & bilin. 

 v j 



15 ounces. 



There is then an excess of 8 oz. of food. 



In the food there are contained ; In the excretions there are contained : 

 12 oz. of carbon. 6*6 oz. of carbon. 



1 oz. 6 drms. of hydrogen. 1 oz. of hydrogen. 



2-5 oz. of nitrogen. 410 grains of nitrogen. 



700 grains of fixed salts. 710 grains of fixed salts. 



Hence there are carried off, by respiration and transpiration, 

 5*5 ounces of carbon, O75 of hydrogen, and 1-62 of nitrogen. 



This quantity of carbon and hydrogen is much less than is 

 generally supposed to be carried off by the lungs ; and with 

 respect to the nitrogen, although we may assume that some is 

 carried off by the skin, the disproportion is still very great. An 

 accurate examination of the expired air might throw much light 

 on this obscure and remarkable morbid process. 



[I am indebted to Dr. Percy for the following analyses of 

 diabetic faeces : 



1. " Faeces of a boy aged 7 years. It was found impossible 

 in this case to enforce a rigid system of animal diet, so that 

 we may regard these faeces as the faeces of diabetes unchecked 

 or modified by treatment. They were hard, and not of the 

 natural consistence of health. 



1st Analysis : 5-44 grs. gave of HO 3-35 or H 6'83g, of C0 2 8-76 or C 43'94. 

 2d Analysis : 4-72 grs. gave of HO 3-01 or H 7'09, of C0 2 7'58 or C 43'79. 

 Incineration : 30-76 grs. gave of ash 6'18, or 20'09. 

 Mean C . . . 43-86 ->. 



Ash . . . 20-09 



The proportion of saline matter is here much greater than 

 usual, and, doubtless, depended upon constipation. 



The fat taken up by ether amounted to 16-16 of the dried 

 faeces. 



