[ 22 7 ] 
were the more foliicitous he fhould do, as he was 
founded before by Dr. Simfon, who had declared 
there was no ftone. But the particular magnitude of 
it we could not well determine at the end of a long 
catheter ; tho’ I remember Mr. Balderftone, who was 
well verfed in that bufinefs, conjectured it to be 
pretty large. He was founded only once by us, as 
the urethra was a little hurt by turning the catheter. 
There is only one circumftance in the cafe, which Mr. 
Simfon feems to have omitted ; that, from the firft 
fymptoms of the (tone, he paffed a great deal of’ 
mucus mixed with pus , as well as blood ; and great 
quantities of gritty red fand, all in fingle grains, ne- 
ver any concreted into fmall ftones. I take the 
more notice of this, as I do not remember, that, after 
he ufed the foap, he ever paffed any fand, but a 
good deal of mucus , in which the foap was dif- 
coverable by its frothing. Could the gritty particles 
of fand be again fufpended in the urine, fo as to be- 
come invifible ? or were they wrapt up in the foapy 
liquid, fo as to efcape obfervation ? I have feen fe- 
veral (tones of a foft confidence diffolved into mu- 
cilage by foap : but the fand paffed by Mr. Simfon, 
before he ufed the foap, feems to indicate his ftone 
of a harder nature, tho’ indeed it felt obtufe at the 
end of the catheter. 
I ftiall rejoice, if many inftances of this kind are 
found afterwards : but this feems to be the only one 
yet, of a ftone in the bladder being diffolved by foap 
alone. I am. 
Dear DoCtor, 
Bandeeran, Junes. Your moft humble Servant, 
I?S7 ’ Adam Drummond. 
Gg 2 
XXVIII. 
