24 MATERIA MEDIC A. 



the fcelid spirit of ammonia is producetl 

 uliich is an excellent antispasmodic. (Sec- 

 Assafoetida.) 



The Salt and Spirit of Hartshorn 

 are nearly the same as the prepared, and the 

 xeaier of ammonia ; but being distilled from . 

 bones or stag horns, which are of the same 

 nature, they are slighty impregnated with 

 animal oH, which gives them a peculiar 

 smell, and is supposed to increase their 

 antispasmodic power. (See Antispasmo- 

 dics.) 



AMMONIACUM is divided into two sorts: 

 the first is of a yellowish colour, inter- 

 spersed with small pieces of wood, and other 

 extraneous matter; the other, in small 

 pieces or drops, of a whiter colour than the 

 former, and much more pure ; this is com- 

 monly called diop am)noniacum. The for- 

 mer, however, may be employed for veteri- 

 nary purposes, making a little allowance in 

 the dose for the extraneous matter it con- 

 tains ; but this may be in a great measure 

 separated, by pounding and sifting. 



Gum Ammoniacum is an excellent ex- 

 pectorant, in doses from three to five drams. 

 It is advantageously joined with powdered 



