[ 2l 5 ] 
veffel, and furrounding them with a mixture of 'fait s, 
defcribed in my former letter, will anfwer this end. 
He fpeaks with fo much certainty of its fuccefs, that 
1 think it worth the trial, efpecially when he ajfures 
us it never fails. 
I am, my Lord, 
Your Lordfhip's 
mod; obedient humble fervant, 
London, Dec. 13. 1759. John Ellis. 
P. S. Small feeds, in their pods, may be preferved 
by being placed thinly on pieces of paper, cot- 
ton or linen cloth, that have been dipt in wax, 
then rolled up tight, and well fecured from air 
by a further covering of wax. 
XXV. 7 he Cafe of a very long Suppreffion of 
Urine . By Ambrofe Dawfon, M. D . 
Communicated by William Heberden, 
M.D.F.R.S. 
Read Nov. W. aged 23 years, tall and well- 
* 759 - JkV • made, was feized, in the year 1755, 
with a weaknefs of one dde, which foon went off, 
leaving only one knee weak and dwelled > for which 
die was admitted into St. George’s Hofpitak 
On the 4th of April, 17 yd, fhe had a ffoppage of 
urine, and felt no difpofition to make any for two 
days. During the whole month of April, the dif- 
charge of urine was very irregular, it having ceafed 
at one time for five days, and at another time for 
nine days. When the catheter was introduced, little 
or no urine was found in the bladder. 
3 1,1 
