ORIGANUM — PELLITORY OF SPAIN. 141 



diat has been once respired, life is almost 

 instantly extinguished. Hence may be in- 

 ferred the necessity of ventilating stables: 

 for althouo-b in close stables the air is not 

 wholly deprived of this principle, yet its 

 proportion is considerably diminished : and 

 it is well known, that when there is a defi- 

 ciency of this animating principle, the sys- 

 tem is debilitated, and all its functions im- 

 perfectly performed ; wlience arise cough, 

 broken-wind, diseased eyes, &c. &c. Per- 

 haps future observation may enable us to 

 add glanders to the list of diseases caused by 

 foul air. 



OXYD. The calxes of metals are now 

 termed oxijds^ on account of their containing 

 a certain proportion of oxigen (the acidify- 

 ing principle;) but not sufficient to give 

 them the properties of aia acid. The term 

 oxyd^ signifying an impci'fect acid. But 

 this subject more properly belongs to a che- 

 mical work. 



PA LM OIL. (See Oil of Palm. J 



PELLITORY OF SPAIN, the root. This 



is used chiefly to relieve the tooth-ache, and 



pain abour. the jaws ; vviiich it docs by caus . 



ing a copious discharge of saliva, when kept 



