OPIUM. 185 



paper (free meconic acid) ; gives a deep red colour with per- 

 chloride of iron (meconic . acid) ; precipitates with, acetate and 

 subacetate of lead, nitrate of silver, zinc, copper, and arsenic 

 (meconates, sulphates, and colouring matter) ; a precipitate 

 with tincture of galls or astringent preparations (tannates of 

 morphia and codeia) ; and "becomes turbid with fixed alkalies, 

 and the carbonates, alkaline earths, and ammonia (precipitated 

 morphia and narcotin). 

 Lose. i to 2 gr. 



Preparations. 



1. Emplastrum Opii. 1 in 10. 



2. Extractum Opii. Aqueous. 2 of opium in 1. Dose, \ to 



Igr. 



From Extractum Opii are prepared : 



a. Extractum Opii Liquidum, Made by digesting 

 the Extract in water, and adding spirit. 1 of opium, 

 i.e. $ of extract, in 10. Dose, 10 to 40 ruin. 



b. Trochisci Opii. ^ gr. of Extract in each. Dose, 

 I to 2. 



c. Vinum Opii. | of Extract, i.e. 1 of opium, in 

 10 of Sherry, with Cinnamon and Cloves. Dose, 10 to 

 40 min. 



3. Pilula Plumbi cum Opio. Opium, 1 ; Acetate of Lead, 6 ; 



Confection of Roses, 1. 1 in 8. Dose, 4 to 8 gr. 



4. Pilula Saponis Composita. Opium, 1 ; Hard Soap, 4 ; 



water, q.s. 1 in 6. Dose, 3 to 5 gr. 



b. Pulvis Opii Compositus. Opium, 3 ; Black Pepper, 4 ; 

 Ginger, 10 ; Caraway, 12 ; Tragacanth, 1. 1 in 10. 

 Dose, 2 to 5 gr. 



from Pulvis Opii Compositus is prepared : 



a. Confectio Qpii.- L Compound Powder in Syrup. 

 1 of opium in 40. Dose, 5 to 20 gr. 



6. Pulvia Ipecacuanha Compositus. Dover's Powder. Opium, 



1 ; Ipecacuanha, 1 ; Sulphate of Potash, 8. 1 in 10. 

 Dose, 5 to 15 gr. 



From Dover'' s Powder is prepared : 



a. Pilula Ipecacuanha cum Scilla. Compound 

 Ipecacuanha Powder, Squill, Ammoniacum, and Treacle. 

 1 of opium in 23. Dose, 5 to 10 gr. 



7. Pulvis Kino Compositus, Opium, 1 ; Kino, 15 ; Cinnamon, 



4 - 1 m 20. Dose, 5 to 20 gr. 



8. Fulvis Cretse Aromaticus cum Opio. Opium, 1 ; Aromatic 



Chalk Powder, 39. 1 in 40. Dose, 10 to .40. 



