[ 472 ] 
fo that they may take in a fufficient quantity of va- 
riolous matter to bring on the diforder. I am. Sir, 
May 2, 1752. Your moil obedient humble fervant, 
R. Brooke. 
* Since the above account was communicated to the Royal Society by 
Mr. Brooke, the experiment has been tried upon four children by Dr. 
Conyers at the Foundling-Hofpital, but was followed neither by the va- 
riolous fever or eruption in any one of the inftances. 
LXXVII. yj Sequel of the Cafe of the Right 
Honour able Horace Walpole, Rfq\ relatmg 
to the Stone , fence his ferfe Account in April 
1750* 
Read May 28, A FTER having found myfelf for 
two years together perfectly well, 
and free from all fymptoms of my former diforder, 
having taken for fome time no more than one half 
of the quantity of foap jand lime-water that I had 
before ufed ; in November 1750, I came out of the 
country in my coach in the ufual travelling pace, 
without the leaft inconvenience. But having ventur’d 
fometimes to go in a coach, after I came to town, 
upon the Rones, I began at times to feel the fymptoms 
of the fame diforder, which upon any motion, be- 
fides that of going in a chair, even in walking to 
any degree, increafed upon me ; and driving only in 
my chariot thro’ the two parks to Kenfington, with- 
out going upon the Rones, I found myfelf greatly 
affedted, by making frequently and involuntarily 
water, and fometimes bloody, accompanied with hid- 
den 
* Sec above, p. 43. 
