348 Additional Observations 
Secrion I. 
The following is the case of a gentleman who suffered 
from a calculous complaint, doting which he was acct- 
dentally induced to employ magnesia, the effects of which 
he has thus described. 
Case 1. About twenty-seven years ago, I felt a pain iv 
one of my kidneys, particularly when in bed, which con- 
tinued to increase during six months. tei likewise an 
occasional sympathetic pain in the testicles, and violent and 
excruciating: pains in the left kidney now became frequent. 
These attacks were sometimes brought on by stooping to 
take up something; but at other times without any appa 
rent cause. They” lasted from twelve to twenty-four bours, 
and | obtained some relief from the application of warm 
flannels ; but they always left me languid and relaxed,. 
On the fourth attack I consulted a . physician, who ima- 
gined that my complaint had been induced by drinking 
eyder, in which [ had formerly indulged. He ordered me 
weak Hollands and water for common drink, and prescribed 
the lixivium of tartar to be taken in broth. This medicine 
was persevered in for some time; but [ found it gradually 
weaken my stomach, and impair my digestive powers. 
About nine ritrithis after my first attack in the kidney, 
I walked from Hampstead to London after dioner, and on 
the following day I clearly felt something pass from the 
kidney to the bladder, and suspected what it was. | T took 
about a pint of Hollands and water, and on attempting 
shortly afterwards to void my urine, found that the passage 
was blocked up; but had scarcely time to consider of my 
situation before the obstruction moved forwards to within an 
inch of the extremity of the arethra; it remained there till 
the following evening, when, by the help of a small ‘pair of 
watchmaker’s forceps, [ succeeded in extracting a stone, 
which was the source of the mischief. 
It was jagged and rough, and of a deep brick-red colour. 
I afterwards voided a considerable quantity of red crystai- 
line sand. 
My physician, who was apprehensive of a return of the 
disorder, desired me to purchase of Cadell an anonymous 
pamphlet upon the Stone and Gravel, and to observe the 
rules there Jaid down. This treatise particularly recom- 
mended the use of the alkalies. I therefore took the lixi- 
vium, and two bottles of Perry’s solvent; but the red de- 
posit in my urine continued, my loins felt weak, and when 
in bed very painful. i 
Being 
so 
