THE 



QUARTERLY JOURNAL, 



January, 1820. 



Art. I. Ohscrvatiom on the Medico-Chemical Treatment 

 of Calculous Disorders, by William Thomas Brande, Sec. 

 R. S., (Sfc. Continued from page 72. 



Section III. On Calculi of the Bladder; their Nature and 

 Treatment. 



1 HE last division of this subject relates to calculi of the 

 urinary bladder : their history, as connected with my present 

 object, may be detailed under the heads of their composition 

 and formation, and their symptoms and treatment. 



The chemical constituents of these calculi, have already 

 been enumerated, and their leading characters pointed out ; 

 they are 



Uric acid. 



Ammonio-magnesian phosphate. 



Phosphate of lime. 



Oxalate of lime. 



Cystic oxide. 

 But their formation will require a more extended inquiry. 



From what has been formerly stated, when speaking of 

 kidney calculi, it will appear obvious that the most common 

 proximate cause of cystic calculus is the lodgment of a small 

 uric calculus in the bladder, since the majority of kidney cal- 

 culi are formed of that substaiice. 



Such a nucleus being lodged in the bladder, it rarely happens 

 Vol. VIII. V 



