346 
NOTES  ON  PRESCRIBING. 
Misce.  Take  a  small  teaspoonful  in  a  wineglassful  of 
water  when  required,  and  repeat  the  dose  every 
two  hours  until  the  pain  is  relieved. 
The  addition  of  the  borax  to  the  other  ingredients  occasions 
the  separation  of  a  sticky  mass,  which  adheres  to  the  sides  and 
bottom  of  the  bottle  in  such  a  manner  that  the  intended  dose 
cannot  possibly  be  administered,  a  difficulty  which  would  be  en- 
tirely obviated  had  the  mixture  been  ordered  in  a  dilute  form. 
» 
R  Hydrargyri  bichloridi  gr.  vj. 
Liquoris  arsenicalis  3yss. 
Tinct.  cardamomi  comp.  giij. 
Aquae  gvj. 
Misce.  Sumat  cochleare  unum  minimum  bis  die. 
R  Quiniae  disulphatis  3ss. 
Acidi  phosphorici  diluti  ^x. 
Liquoris  arsenici  chloridi  ^j. 
Tincturae  ferri  muriatis  gxj. 
"       aconiti  giij. 
"       calumbae  £iss. 
Glycerinae  ad  3vj. 
Sumat  cochleare  unum  minimum  pro  dosi. 
Medicines  prescribed  according  to  such  formulae  as  this  and 
the  preceding,  are  dangerous  from  their  extreme  concentration, 
and  from  the  large  quantity  ordered  rendering  them  liable  to  be 
mistaken  for  comparatively  dilute  mixtures  taken  in  the  dose  of 
two  or  three  tablespoonfuls. 
R  Tinct.  aconiti  (Flemming)  3ij. 
Sumat  gutt.  j  tertiis  horis  ex  aquae  3ij. 
R  Strychniae  gr.  j. 
Acidi  phosphorici  diluti  ^j. 
Sumat  ttl  v  ex  aquae  cyatho  vinario  ter  die. 
R  Strychniae  gr.  ij. 
Aquae  destillatae  3v. 
Solve  ope 
Acidi  hydrochlorici  diluti  vti  iv. 
et  adde 
Vini  ferri  ad  £x. 
