[ 474 ] 



probable that that plant had been ufed in its ftead. 

 Upon getting a fpecimen, it appeared that this had 

 been indeed the cafe ; as alfo, upon farther enquiry, 

 that it was the juice of the root only, and not of 

 the leaves and ftalks, that had been adminiftered. I 

 might here obferve, that the expreillon from the 

 root is not to be depended upon after the plant is 

 advanced towards its flowering ftate, as the root 

 then becomes light, fpungy, and almoft deftitute of 

 juice. 



If you judge this cafe not improper to be laid 

 before the Royal Society, you will do me the honour 



of prefenting it. Mr. H n himfelf is fo much 



convinced of the efficacy of the medicine, that he is 

 deiirous of its being known to the world. 



I do not enter into any reafoning on this occur- 

 rence 5 I relate it only as a fact, and defire it may 

 have no more weight than every judicious phyfician 

 knows is due to a (ingle inflance. How far it may 

 be proper to give this juice a farther trial, I will 

 not take upon me to determine j but muft, as an 

 encouragement to any who may chufe to venture 

 upon it, inform them, that it has not on all perfons 

 io much power in producing naufea and iicknefs, as 

 in the cafe here before us. I am, 



S I R, 



with great efteem, 



Your obliged humble fervant, 



P. S. 



7 



