THE CODEX AND THE BRITISH PIIAIOIACOPCEIA. 
723 
rather than a larger one is rccommenderl. The reader is referred to Professor 
Redwood’s able remarks upon sulphuric acid in the Pharmaceutical Journal. 
17. jAcide Suleueique Dilue=^\ 
Acidum Sulfariciim Dihitum. Dilute Sulphuric Acid. 
Translation. 
Purified sulphuric acid, 1-8-1 .... One hundred grammes, 100. 
Distilled water.Nine „ „ 900. 
Put the water into a bottle, and, by degrees, mix with it the sulphuric acid, 
agitating continually to equalize the heat: care should be taken not to pour the 
water upon the acid, the heat developed at the point of contact being able to 
occasion the fracture of the vessel. This solution contains one-tenth of its 
weight of concentrated sulphuric acid. 
At the very starting-point of anything like a pharmaceutical preparation or 
mixture, one is induced to exclaim, behold the convenience of the decima,! 
system ; see how easy to make the calculation and remember it,—one in ten by 
weight; whereas in the P. B. the proportions are by measure, three of acid to 
thirty-five of water,—making thirty-eight,—no even quantity, one part by 
measure in twelve and a fraction ; if required to know the proportion by weight, 
it must be worked out, but turn to the next and one’s ardour is somewhat 
damped. 
18. Acide Suleueique Alcoolise-^. 
Dau de Rabcl.) Acidum Sulfariciim Alcoolisatum. Alcoholic Sulphuric Acid. 
Purified sulphuric acid, 1-SI: .... One hundred grammes, 100. 
Alcohol, 90°.Three „ „ 300. 
Red-poppy petals.Four grammes ... 4. 
In this product there is no longer the simpliciiij of the decimal system, the 
combining proportion of acid being one in four, not one in five, ten, fifteen, 
twenty, or a hundred. This preparation might at first appear to be synony¬ 
mous with the acidum sulphuricum aroraaticum of the P. B,, but it is not so, as 
it contains no aromatics and is much stronger of acid. 
20. Acide iSriTRiQUE AlcoolisA^. 
Esprit de Nitre Dulcife. Acidum Nitricum Alcoolisatum. Dulcified Spirit oj 
Nitre. AAcolwlic Nitric Acid. 
Nitric Acid, 1-31.Oiie hundred grammes, 100. 
Alcohol, 90°.Three do. do. 300. 
Pour gradually the nitric^acid upon the spirit which has been previously put 
into a stoppered bottle ; open it occasionally during twm or three days to allow 
the escape of gas developed by the chemical action ; keep it for use. To prepare 
one hundred grammes of nitric acid, 1'31, mix 71 gr. 5 of officinal nitric acid 
at 1-42 with 28 gr. .5 of distilled water. This preparation is evidently intended 
to take the place of spiritus oetheris nitrosi; its properties are stimulant and 
diuretic. 
21. Acide Phosphorique. PhOj^Tl. 
Acide Phosphorir/ue Officinal. Acidum Phosphoricum Officinale. 
Ph 05 , 3 no d-aq. 
Phosphorus.Ten grammes . .10. 
Officinal nitric acid, at 1-42 . . . . Sixty grammes . 60. , 
Distilled water.Thirty grammes . 30. 
Put the mixture of nitric acid and water, having a density of 1’28, into a glass 
