RED WATER. 4G3 



My. Cuming of Ellon throws some douLt upon tlie accuracy of 

 the above analysis, and gives analyses of his own and of Mr. 

 Deuchars, V.S., his assistant, which difler from it to some extent. 

 Being dissatisfied with any reported analysis, I procured some 

 specimens of urine, and found that it may be satisfactorily con- 

 cluded that albumen is always abundantly present, and that the 

 hsematin of the blood, escaped from the corpuscles to a great 

 extent, gives colour to the urine, which may be of a dullish red 

 or a brownish-black appearance, the difference in the colour 

 being due to the varying quantity of htematin, and to a chemical 

 alteration of its iron, arising from the presence of sulphide of 

 hydrogen and ammonia. The following analysis, made by Dr. 

 Macadam, will show the chemical constitution of a sample of 

 urine, selected as on average one from several wliicli were sent 

 to me from various parts of England, Scotland, and Ireland : — 



28^A 3Iarch 1874. 

 Analysis of Samples of " Bed Water" received from Frincipal 

 Williams, of the New Veterinary College, Edinlurgh. 



Specific gravity at 60° F. 1041 (Water = 1000). 

 In 100 parts by weight. 



Organic Matter — 



Urea, . . , , . 1-2G 



Albumen, . . . .1-82 



Extractive matter, , . . 1'28 



Saline Matter — • 



Chloride of sodium, . . . 1*52 



Oxide of iron, .... 0"05 



Phosphates, .... 0"G8 



Other saline matter, . . . 0*74 



4-3G 



2-99 



Water, . . ' . . . 92-65 



100-00 



It may be mentioned that every specimen emitted a more or 

 less powerful odour of rotten turnips, and was strongly alkaline 

 iu its reaction. Microscopically examined, crystals, as shown iu 



