424 
Progress  in  Pharmacy. 
f  Am.  Jour.  Pharm. 
\  September,  1914. 
ney  and  Bennett.) — Calcium  glycerophosphate  is  of  variable  com- 
position and  does  not  contain  a  definite  proportion  of  water.  Potas- 
sium glycerophosphate  is  not  readily  obtainable  in  a  crystalline  form, 
and  the  crystalline  form  of  sodium  glycerophosphate  contains  5 
molecules  of  water.  Magnesium  glycerophosphate  is  rendered  more 
soluble  by  the  presence  of  citric  acid,  and  no  definite  formula  for 
the  hydrated  salts  can  be  given.  Ferric  glycerophosphate  should 
contain  approximately  15  per  cent,  of  metallic  iron  and  should  be 
completely  soluble  in  two  parts  of  water.— Pharm.  /.,  1914,  vol.  93, 
PP-  134.  135- 
Commercial  Standards  for  Dried  Magnesium  Sulphate,  Sodium 
Sulphate,  and  Sodium  Phosphate.  (Umney  and  Bennett.) — A  rea- 
sonable standard  for  dried  magnesium  sulphate  would  be  that  it 
should  be  prepared  by  drying  at  ioo°  until  it  has  lost  about  one-third 
of  its  weight,  and  that  the  product  should  contain  not  less  than  23 
per  cent,  and  not  more  than  31  per  cent,  of  water.  It  should  be  com- 
pletely and  readily  soluble  in  water.  Sodium  sulphate  should  be 
practically  anhydrous  and  should  not  contain  more  than  5  per  cent, 
of  water.  For  sodium  phosphate  5  per  cent,  of  water  would  be  a 
reasonable  limit. — Pharm.  J.,  1914,  vol.  93,  pp.  135,  136. 
Liquor  Opii  Sedativus.  (Bennett  and  Cocking.) — Suggestions 
to  improve  the  formula  included  in  the  British  Pharmaceutical 
Codex.  The  opium  should  be  exhausted  by  cold  maceration  in  lime 
water,  and  the  solution  should  be  subsequently  but  slightly  acidified 
by  hydrochloric  acid  or  sulphuric  acid,  after  the  addition  of  alcohol 
and  wine. — Pharm.  J.,  1914,  vol.  93,  pp.  136,  137. 
Some  Uses  of  a  Tincture  Press.  (Pollard,  E.  W.) — An  illus- 
trated description  of  possible  uses  of  a  tincture  press  as  a  pill-piper 
or  as  a  suppository  machine. — Pharm.  J.,  1914,  vol.  93,  pp.  137,  138. 
Anccsthetic  Ether  of  Commerce.  (Finnemore,  H.) — -An  exami- 
nation of  a  number  of  samples  of  ether  in  actual  use  shows  that, 
while  some  samples  may  have  been  rather  inferior,  in  the  main  they 
have  reached  a  fair  average  of  purity.  The  impurities  found  consist 
of  acetone,  water,  alcohol,  acetaldehyde,  peroxides,  and  acids. — 
Pharm.  J.,  1914,  vol.  93,  pp.  138,  139. 
Medical  Museum.  (Anon.) — The  Wellcome  Historical  Medi- 
cal Museum  in  London  was  reopened  on  May  28,  19 14,  in  a  per- 
manent home,  54  A,  Wigmore  Street,  Cavendish  Square,  London, 
W.  The  museum  is  open  daily  from  10  a.m.  to  6  p.m.,  Saturdays 
to  T  p.m.    Members  of  the  medical  profession  and  related  callings 
