3S MATERIA MEDICA. 



recent inflammatory coughs, which is 

 highly improper. It may be useful, how- 

 ever, in chronic coughs. 



The dose is from half an ounce to one 

 ounce. 



BARBADOES TAR is a bituminous sub- 

 stance, brought from the island of Barba- 

 does. It is nearly of the colour and consist- 

 ence of common tar, but smells differently, 

 and its colour approaches more to brown. 

 It has a considerable diuretic power, and is 

 said to be useful in chronic coughs. Farriers 

 frequently use it for this purpose ; but by 

 giving it indiscriminately they often do mis- 

 chief. They also employ it as an external 

 remedy in strains and bruises, generally dis- 

 solved in oil of turpentine, and oil of el- 

 der. 



BARBADOES ALOES. See Aloes Bar- 

 badoes. 



BARILLA. The name of a sea plant 

 from the ashes of which mineral alkali, or 

 soda, is obtained in an impure state. (See 

 Alkalies.) 



BARK, PERUVIAN, or Jesuies Bark. 

 Though in the human subject bark is an use- 

 ful tonic, and febrifuge medicine, it has no 



