218 MEDICINAL AND PniSON(A:S PLANTS 



is to rub thoroughly the affected part every few hours with 

 a concentrated solution of sugar of lead in alcohol of 50-75% 

 strength. As alkalis convert the oil into a harmless soap, 



Fig. 210. — Pois(jii-i\'y {Rluin Tn.rifmt, lul,-,,,,. .Sumac Family. Aiiaairdinciir). 

 (7, spray showing air-mcits and lca\-es. 1: h, fruit, 1. (Cliesnut.) — 

 Climl)inK or trailing shrul) l)cci.niinf; (i-1.") m. Iouk, .sometimes erert 

 and bushy; h■a^'os .smooth oi- downy: Howcrs nrci n; fruit smooth, waxy, 

 Krayisli. NatixT homi-, N'rirtli .Vmciica. 



I'clii'f is :dso roi_iiid \\\ llic tipplical ion ol' a strong solulioii of 

 cooking sod;i, as soon :is ])os,silil(' ,aflrr Ihc poisoning. 



.\ fixed oil similar (o cufilol ha,- hceii found to he I lie cause 

 ol poisoning hy two of out' iiati\-c orchids kno\Mi ;is lad\- 



