Am.  Jour.  Pharm. ) 
Mar.,  1882.  J 
Iodine-yielding  Algoe. 
127 
centrated  down  to  5  volumes  in  1,  serves  equally  as  a  menstruum  and 
offers,  in  addition  to  its  possibly  enhanced  therapeutic  quality,  the 
property  of  keeping  well.  It  is  possible  the  profession  may  one  day 
find  a  varied  employment  for  the  presumably  useful  therapeutic  pro- 
perties of  this  species. 
The  writer  would  suggest  the  following  formulae  for  its  employment : 
Infusion  of  Laminaria  flexicaulis. 
Take  of  dried  and  sliced  fronds,         .         .        ^1  part. 
Water,  .         .         .         .         .         .10  parts. 
Macerate  with  occasional  stirring  for  four  hours  and  strain  with 
pressure. 
Tincture  of  Lamarinia  flexicaulis. 
Take  of  dried  and  sliced  fronds,         .         .  1  part. 
Proof  spirit,     .         .         .         .         .         .      8  parts. 
Laminaria  saccharina  is  of  a  more  complex  character  than  either  of 
the  preceding,  yielding  to  decoction  50  per  cent,  of  its  weight  and 
affording  iodine,  bromine,  and  mannite,  the  latter  shown  by  Stenhouse 
to  amount  to  12  or  15  per  cent,  of  the  plant,  and  a  mucilage  which  in 
the  experience  of  the  writer  differs  materially  from  that  afforded  by 
any  other  species.  Its  emulsifying  power  has  already  been  alluded  to. 
Ohondrus  crispus  will,  by  virtue  of  its  glutinous  quality,  give  a  pseudo- 
emulsion  with  cod  liver  oil,  differing  optically,  however,  from  the 
more  minute  division  and  permament  separation  of  the  oil  particles 
effected  by  Laminaria  saccharina.  It  moreover  fails  in  keeping 
quality  and  obviously  lacks  the  therapeutic  credentials  of  the  above. 
The  writer  apprehends  that  the  chief  use  of  this  species  will  lie  in 
the  preparation  of  cod  liver  oil  emulsion,  for  which  purpose  he 
submits  the  following  formulae  with  confidence : 
Decoction  of  Laminaria  saccharina. 
Take  of  dried  and  sliced  fronds,         .         .  1  part. 
Water,  .  .         .         .         .         .         .10  parts. 
Macerate  for  four  hours  with  occasional  stirring,  then  heat  gra- 
dually to  boiling,  which  continue  until  its  viscosity  is  discharged. 
By  evaporation  it  can  be  reduced  to  the  consistence  of  an  extract 
or  so  dried  as  to  yield  a  horny  translucent  mass,  in  either  of  which 
conditions,  however,  it  has  not  the  emulsifying  power  of  an  equiva- 
lent of  fresh  decoction.    The  following  is  the  writer's  formula : 
