12 
AN  INTRODUCTION  TO  PRACTICAL  PHARMACY. 
ter,  is,  that  they  are  not  adapted  to  the  examination  of  the  physical  eh  a 
racteristics  of  the  plants  ;  a  pharmaceutical  student,  placed  in  an  establish- 
ment where  they  are  sold  to  the  exclusion  of  the  dried  plants  in  bulk,  en- 
joys no  opportunity  of  familiarizing  himself  with  this  extensive  class  of 
medicines,  at  least  so  far  as  their  physical  and  botanical  characters  go :  to 
this  may  be  added  the  difficulty  in  noticing  any  deficiency  in  quality,  any 
intentional  or  accidental  adulteration,  or  error  in  labelling  the  articles/' 
In  the  chapter  on  medicated  waters,  which  we  have  already 
quoted  from,  is  included  an  account  of  the  manufacture,  &c,  of 
mineral  water,  with  descriptions  of  apparatus  employed.  We 
copy  the  engraving  of  Bernhard's  apparatus  and  fountain  : — 
A.  Acid  reservoir.  B.  Generator,  connected  with  A.  by  glass  valve  H. 
and  by  the  pipe  K.  (to  equalize  the  pressure).  C.  C.  Washers.  D.  D.  Foun- 
tains. G.  I.  Openings  to  supply  the  acid  reservoir  and  generator.  Q.  Q.  K.  K. 
Openings  for  supplying  the  washers  and  fountains.  P.  P.  Openings  for 
emptying  generator  and  washers.  E.  Guage  for  indicating  the  pressure. 
L.  M.  N.  Connecting  pipes  with  stop  cocks. 
We  omit  the  detailed  description  for  want  or  space. 
