[ 856 ] 
CXIV. A further Accou?U of the poijonous 
Effe&s of the Oenanthe Aquatica Succo 
virofo crocante of Lobel, or Hemlock 
Dropwort, by W.Watfon, MZ). F.R.S. 
To the R o v a l Society. 
Gentlemen, 
kead Dec. 21, TT N the mon th of June 1746. I com- 
1 municated to you fome obfervations 
concerning the Oenanthe aquatica Succo 'virofo cro- 
cante of Lobel, in relation to itspoifonous effects upon 
fome French prifoners at Pembroke. Thefe obferva- 
tions were afterwards publilhed in the PhiloJ'ophical 
Tranfattiom *, with an accurate reprefentation of 
the plant itfelf, from an original drawing by that 
compleat artift Mr. Ehret. This at that time I 
thought the more necefiary, as it was of no fmall 
importance to the public, to be well acquainted with 
a plant, the effedts of which, when taken into our 
bodies, were fo much to be dreaded. This account 
of mine, as well as the reprefentation of the plant, 
were republifhed from the Tranfadtions into the pe- 
riodical works of that time j from whence a more 
extenfive knowlege of and acquaintance with this 
plant might have been hoped for. A late inftance 
however has evinced, that thefe endeavours have not 
had their full effedf, as the plant in queflion is not 
yet fufficiently known, and attended to. 
* See Phil. Tranf. N°. 480. p. 227. 
John 
