MATERIA MEDICA AND THERAPEUTICS. 117 



vegetables, are chemically incompatible; in case of poisoning 

 give white of eggs and milk freely, evacuate stomach and give 

 demulcents ; it is the best antidote to phosphorous poisoning. 



Actions. — Gastro-intestinal irritant, astringent, tonic, emetic 

 in large doses ; acts directly on the stomach ; antiseptic and ver- 

 mifuge. 



• External. — In solid form, caustic, diluted is astringent and 

 antiseptic. 



Uses. — Internally used as emetic, antidote for phosphorus, 

 atony of bowels, diarrhoea especially combined with dilute sul- 

 phuric acid or opium ; is supposed to prevent development of 

 farcy and glanders in exposed animals. 



For tetanus try the following: 



5 Cupri sulph., 



Ferri. sulph. exsic, aa, J jss. 



Pulv. bellad. fol. 



Pulv. gentian rad., aa, 3 iij. 



M. Ft. Chart No. 12 

 Sig. — One powder 3 or 4 times daily in syrup. 



Quinine may be added. This prescription does not consti- 

 pate. 



Externally. — Used as a stimulant and caustic, styptic, also 

 used for foot-rot ; for granular eye-lids, touch lightly over the 

 granular surface with the sulphate. 



PLUMBUM— LEAD. 



Physiological Actions. — The lead compounds are powerful 

 astringents, haemostatics, styptics, anodynes, local sedatives and 

 desiccants; they coagulate albumen and form a protective coat, 

 also contract small vessels. In large or continued doses they ir- 

 ritate, then paralyze voluntary and involuntary muscles, and also 

 the central nervous system. 



Toxicology. — Acute lead poisoning is rare; intense gastro- 

 intestinal irritation, vomiting, retching, paralysis, coma and col- 

 lapse are its principal phenomena. 



Chronic Lead Poisoning. — Blue line along the margin of 

 gums, paralysis of extensor muscles of fore-arm, impaired sensi- 

 bility, rheumatism without fever or tenderness in joints, which 

 however, are red and swollen, emaciation, albuminuria, colic, 



