224 



THE FLUIDS. 



Nuclei of uric acid 

 " urate of soda 

 " " lime 



" uric oxide 



" cystine . 1 ; 



" oxalate of lime 



( lime 

 " phosphates < triple 



( mixed 19 

 " foreign substances 

 Mixed calculi . (> ^ . ,.j., f 



The bodies were composed of 

 Uric acid (Figs. ,20, 21) in 

 Urates of soda, &c. (Fig. 23.) 

 Cystine . . . . . 

 Oxalate of lime. (Figs. 32, 33.) 

 Triple phosphate. (Fig. 10.) . 

 Phosphate of lime . 

 Fusible mixed phosphates -,\. 

 Carbonate of line 



The crust was composed principally of- 

 Uric acid in ... 



Urate of soda .... 



Cystine . V ' '" .'. V*- : A 

 Oxalate of lime . , ./,. T 

 Triple phosphates ,. ._ ' , , 

 Phosphates of lime . . .- , r 

 Fusible mixture of phosphates 

 Carbonate of lime 



22 



Trans. Univ. 



32 



26 



4 



78 



47 

 186 

 12 

 26 

 14 



12 (mixed) 

 41 

 1 



34 



2 

 2 



16 

 4 



66 



40 

 11 



34 



with ) 



phosphates ) 



11 

 11 

 14 



19 (mixed do.) 

 27 



2 



9 



2 



37 





The frequent occurrence of uric acid as a nucleus in the preced- 

 ing calculi is remarkable (p. 63); and Lehmann states that a trace 

 of uric acid, if nothing more, may always be detected in the nu- 

 cleus of the concretion (Vol. II. p. 124). Scherer maintains that it 

 is an acid fermentation of the mucus in the urine, which leads to 

 the first precipitation of the uric acid, and therefore mucus must 

 be first present and form a part of the nucleus. Mere irritation of 

 the bladder may produce an abnormal mucus, and thus become the 

 first step towards the foundation of the nucleus. An alkaline fer- 

 mentation of the urine, on the other hand, leads to the deposition 

 of the phosphates (as in paralysis of the bladder, &c.) ; and hence 

 calculi may present the alternating layers (Fig. 34), already de- 

 scribed. 



