AQUAE — WATERS 23 



ent powder. 3, Distillation. The following table mentions the offi- 

 cial waters and designates the manner of preparation of each : 



Simple solution or dilution 



Aqua Amygdalae Amaraj — Bitter almond 

 Aqua Aurantii Florum — Orange flowers 

 Aqua Chlorof ormi — Chloroform 

 Aqua Oreosoti — Creosote 

 Aqua Eosae — Eose 



Filtration 



Aqua Anisi — Anise 

 Aqua Camphorse — Camphor 

 Aqua Cinnamomi — Cinnamon 

 ' Aqua Fceniculi — Fennel 



Aqua Menthse Piperitse — Peppermint 

 Aqua Menthse Viridis — Spearmint 



Distillation 



Aqua Aurantii Florum Fortior — Stronger orange flower 



water 

 Aqua Destillata — Distilled water 

 Aqua Destillata Sterilisata — Sterile distilled water 

 Aqua Hamamelidis — Witch-hazel 

 Aqua Eosse Fortior — Stronger rose water 



Oaseous solution 



Aqua Ammonise — Ammonia water 



Aqua Ammonise Fortior — Stronger ammonia water 



The process of simple dilution or solution consists of adding the 

 drug to a sufficient amount of water and agitating. In case of a 

 gaseous solution, the gas must first be generated in a suitable appa- 

 ratus, washed and passed into a cylinder containing water. 



Filtration Through an Absorbent Powder. Excepting in the 

 case of camphor water, this process is employed to obtain a saturated 

 solution of volatile oil. Since these oils are but slightly soluble in 

 water, they are triturated with an insoluble absorbent powder to 

 separate them into finely divided form. After trituration with the 

 powder, the water is gradually added. The result is that the finely 

 divided drug is better brought into solution. Several powders have 

 been recommended for use but all were more or less soluble and the 

 Pharmacopoeia specifies purified talcum. This is the method speci- 

 fied in the general formula for aromatic waters. 



Distillation. In this case the product is put into a still with 

 water and heat applied. The vapors arising from the still carry 

 with them the volatile aromatic principles of the plant. 



