448 NOTES ON PRESCRIBING. 



1867. Lotions in which both chloride and bichloride of mercury 



Change of are ordered with lime-water, are easily made to vary from 

 colour. yellow to brown or black, according to the order in which the 

 two mercurials are decomposed. A lotion made according to the 

 following formula is either transparent and colourless, or opaque 

 and of a brick red, according to the order in which the ingre- 

 dients are mixed. 



R Potassae chloratis 

 Boracis aa 3ss 

 Hydrargyri bichloridi gr. iv 

 Glycerines 3ss 

 Aquae ad ^viij 

 Misce. 



Ill-contrived Although hardly coming under this section, and rather 

 deserving to be ranged under the head of ill-contrived formulae, 

 may be instanced the following : 



R Unguenti hydrarg. nitratis jiij 



cetacei j 



Liquoris potassae 3ij 

 Linimenti saponis ad gvi 



Misce. Sit linimentum capiti omni nocte infricandum. 

 R Confectionis opii 3ij 

 Olei terebinthinse iss 

 Sp. ammonias aromat. 3iij 

 camphorse iij 

 ilat linimentum. 



R Potassii iodidi 3i 

 Morphias acetatis gr. x 

 Aceti colchici 3iv 

 Olei sulphurati i 

 Misce r Fiat linimentum. 



The next subject on which I must beg leave to offer a few 

 remarks is the 



UNDUE CONCENTRATION OF MEDiciNEs.^-There is no practice 

 i the modem method of prescribing more fraught with incon- 



