Am.  Jour.  Pharm.  ) 
March  1, 1871.  j 
Qlycerin,  etc. 
119 
it,  because  such  an  administration  would  bring  about  the  transforma- 
tion of  the  substance. 
In  concluding  this  paper,  I  must  add  that  I  have  no  interest  what- 
ever in  putting  forward  the  claims  of  Liebreich's  manufacture,  further 
than  a  feeling  of  moral  duty  to  the  medical  profession,  pharmacists 
and  the  public,  together  with  the  conviction  that  other  manufactures 
which  have  come  under  my  notice  do  not  attain  the  desired  standard. 
It  appears  that  the  importers  of  this  article  now  know  a  guaranteed 
hydrate  of  chloral  and  an  unguaranteed  hydrate  of  chloral.  There 
is  a  guarantee  to  the  consumer,  which  is  the  protection  of  the  hydrate 
manufactured  under  Liebreich's  supervision ;  this  is  a  registered  trade 
mark.  It  is  oiFered  in  three  forms — cake,  crystal  and  powder  ;  but 
the  action  of  the  cake  is  more  to  be  relied  upon.  Each  product  should 
be  kep't  in  well-stoppered  bottles.  The  large  quantity  which  the  bot- 
tles with  the  registered  trade  mark  contain  is,  I  think,  a  drawback  to 
its  more  universal  application  ;  and  I  think,  if  the  agents  of  this 
manufacture  could  be  induced  to  supply  it  in  smaller  bottles, — say 
from  1  oz.  upwards, — with  the  registered  label  on  each  bottle,  and 
could  produce  it  at  a  cost  more  in  proportion  with  the  competition, 
they  would  not  only  further  the  objects  of  the  discoverer  by  more 
satisfactory  and  uniform  results  being  produced,  but  also  benefit  man- 
kind in  general. — Pharm.  Journ.^  Loncl.^  Jan.  7,  1871. 
GLYCERIN;  ITS  QUALITY  AS  IT  EXISTS  IN  COMMERCE. 
By  Joseph  P.  Remington,  Philadelphia,  Pa. 
This  powerful  solvent  and  useful  medicine,  though  but  lately  called 
from  its  seclusion  in  the  cabinet  in  answer  to  the  demands  of  this  pro- 
gressive age,  has  rapidly  ingratiated  itself  into  the  esteem  of  the 
chemist,  pharmacist,  and  the  public  at  large. 
It  continues  to  widen  its  sphere  of  usefulness  ;  we  hear  of  new  ap- 
plications constantly  ;  and  its  bland  numners  and  insinuating  disposi- 
tion have  won  for  it  a  host  of  friends,  and  an  ever-increasing  popu- 
larity. 
It  serves  its  mission  as  faithfully  on  the  dressing-table  of  a  lady  as 
it  does  in  our  gas  meters  ;  as  well  as  an  excipient  for  pill  masses  as 
it  does  a  substitute  for  molasses  in  printers'  rollers,  and  its  range  of 
applications  between  these  extremes  is  varied  and  extensive. 
Its  production,  with  a  view  to  improve  the  quality  and  lower  the 
