298 



THE SECRETIONS: 



nitric acid to allow of a few drops remaining on the surface of 

 the crystalline mass. It must then be submitted to a low tem- 

 perature, and the crystals placed on blotting paper and com- 

 pressed till they cease to communicate moisture. The fixed 

 salts must be determined from a separate portion of urine. If 

 we deduct from the known quantity of solid residue the portion 

 insoluble in spirit (from which the uric acid is determined), the 

 urea, and the fixed salts, we obtain, as the difference, sugar and 

 alcohol-extract which appears to decrease in diabetic urine in 

 proportion as the sugar increases. The following are the special 

 results of my analyses of the urine of this man. 



No. 135 represents the analysis of the urine before the com- 

 mencement of the animal diet ; No. 136, shortly after its com- 

 mencement ; No. 137, during the same diet, shortly before the 

 use of the cod-liver oil ; No. 138, after the oil had been taken 

 for eight days ; No. 139, after the iodide of iron had been used 

 for eight days ; No. 140, after the gluten-bread had been tried 

 for eight days ; No. 141, two days subsequently to the preceding 

 analysis, there being a considerable increase in the secretion. 



In twenty-four hours there were discharged : 



The composition of the urine appears from my observations 

 to undergo a rapid modification as soon as there are decided 

 indications of convalescence. The sugar decreases to a very 



