1S20.] 



Dr. Henry on Urinary Calculi. 



109 



Table II. 



Showing the Proportion of each Variety of Calculus to the whole 

 Is amber in the different Collections. 



Kind of calculus. 



3 S 



Cliielly uric acid 



i:^ir(hy pli'ispliiites 



Oxalate of lime 



Coiii|)Oiin(l 



AUernaling 



^ rUric acid and plii>sphate 



— I Oxalate and [jiiosph, lies . 



c <( Oxalate and uric acid. . 



5 I Uric acid oxalate and 



5. (^ pliMsphalcs 



Cvstic oxide 



1 to '^• 

 1 Sl-0 



^5 



I to 1-8 



5-0 



340 



2-0 



4-8 



11-2 



11 '2 



1 11-6 



3-9 

 II-G 

 17-5 

 35-0 



I to 2-7 



60 



I 120 



8'5 — 



2-4 

 3-4 



12-0 



< .==; 



1 to 3-3 



I 11-5 



1 11-5 



I 230 



I 



1 



1 



1 



1 24-C 



2-2 



3-8 



11-5 



23 



z 



O 







I to 3-2 I to 2-6 



8-8 



I 11-5 



I m 



1 11-8 



1 2-4 



1 4-4 



1 101 



I 11-8 



8-5 



17-0 



23-5 



2-5 



4-8 



11-6 



no 



26-5 

 98-5 



The greater proportion of uric acid calculi in Mr. White's col- 

 iection than in that of Mr. Gibson and Mr. Ainsworth may, on 

 iirst view, appear extraordinary, as those three gentlemen all 

 practised surgery in the same town,. It will be found, however, 

 in the joint collection of the two latter, to be compensated by a 

 much greater number of that variety of alternating calculus 

 v/hich is composed of uric acid and the phosphates in distinct 

 layers. It may be remarked also that the greater number of 

 Mr. White's operations were performed at a very remote period 

 of time, when little interruption was given to the natural progress 

 of the disease by the use of alkaline medicines, and that his 

 patients were chiefly from a distance. Of late years, in conse- 

 quence of the increase of pubhc hospitals in the adjoining coun- 

 ties, cases requiring lithotomy occur comparatively very seldom 

 at the Manchester Infirmary ; and the town, and district im- 

 mediately surrounding it, may be considered as remarkably 

 unproductive of stone patients, though cases of gravel occur, so 

 far as I have the means of judging, as frequently as in other 

 remote districts.* 



In the collection of Mr. Ingham, of Newcastle, the proportion 

 of calculi composed entirely of the earthy phosphates is un- 

 usually small, but is compensated by the number of concretions^ 

 in which the. [)hosphates alternate with uric acid. On the whole 

 indeed there is a remarkable uniformity in the composition of 



• It i« a well ascerialncd fact, and one which should give encouragement to 

 persons labouring under gravel, that this disease occurs very frequently without 

 degenerating into stone ; and that it is even endemic in districts where the stone i» 

 a very rare dise;.se. — (See Beverwyk dc Calculo, p. 1^, Curletuu de Lithiasi| 

 {>. 118, and Ilcbcrdeii Couuncut. p. 78.) 



