302 OP THE URINE. 



NOTES. 



(A) Mr. Charles Bell has described two long muscles running 

 from the back of the prostate gland to the orifices of the ureters. 

 Their action is not only to assist in emptying the bladder, but 

 to pull down the orifices of the ureters, thus assisting to preserve 

 that obliquity of insertion which the ureters have a tendency to 

 lose in proportion as the bladder is depleted.* 



(B) Sir Everard Home observed, in his experiments on the 

 spleen, that colouring matters began to manifest themselves in 

 the urine about seventeen minutes after they were swallowed, 

 became gradually more evident, then gradually disappeared, and 

 after some hours, when the mass had unquestionably passed into 

 the intestines, again tinged it as strongly as ever. 



(C) The following is Berzelius's analysis of urine. f 



Water - - 933.00 



Urea 30.10 



Sulphate of potass - 3.71 



Sulphate of soda 3.16 



Phosphate of soda - 2.94 



Muriate of soda 4.45 



Phosphate of ammonia - 1.65 



Muriate of ammonia 1.5O 

 Free lactic acid 

 Lactate of ammonia 

 Animal matter soluble in alcohol, and usually 



accompanying the lactates - 

 Animal matter insoluble in alcohol 

 Urea, not separable from the preceding 



Earthy phosphates with a trace of fluate of lime 1 .00 



Uric acid l.OO 



Mucus of the bladder 0.32 



Silex - 0.03 



1000.00 



H. Fr. Link, Commentatio (honoured with the Royal Prize) de analyst uritue 

 et origine calculi. Dotting. 1788. 4to. 



Fourcroy, Annales de c himie . T. vii. p. 180. and T. xvi. p. 113. 



C. Fr. Gaertner, Observata quetdam circa urines naturam. Tubing. 1796. 4to. 



* Mtd. Chir. Trans. Vol. iii. f Med. C/tir. Trans. Vol. Hi. 



