t 417 ] 



hft, however, is fo refractory a fubftance, and fo 

 intraClable to almoft every method of treatment, 

 that its corhponent principles retain a degree of vi- 

 rulence even after they are difunited, and the metal 

 decompofed. Hence it is matter of ferious con- 

 cern, that this mod formidable poifon begins to 

 be adminiftered as a medicine by almoft every 

 dabbler in phyfick ! 



It had long indeed been ufed as an empirical 

 application againft cancers, but of late it has beei^ 

 alfo given indifcriminately in fome other difeafes, 

 nay even in common agues, wherein there could 

 certainly be no juft pretence for having rccourfe to 

 fo doubtful — fo dangerous — fo defperate a remedy ! 



Article XXXVI. 



On the Mangel'Wurzely and a new Drill-Roller. 



[By Sir Thomas Beevor, bart. to the Secretary.] 



Sir, 



T Have little to fay in anfwer to your inquiry re- 

 "*• fpedling the Mangel -Wurzel: the few plants of 

 it which I cultivated laft year afforded me no op- 

 portunity or ground whereby I could judge of their 

 Vol. V. E c cffcft 



