Am.  Jour.  Pharm.") 
September,  1905.  J 
Progress  in  Pharmacy. 
435 
a  quantity  as  2-5  c.c,  for  use  in  legal  cases  when  larger  quantities 
are  not  available. 
"  Nux  Vomica  Seeds,"  by  Mr.  Sidney  C.  Gadd,  giving  the  amount 
of  N  /iO  soda  required  to  neutralize  the  fat  in  the  seeds. 
44  Manufacture  of  Ferrous  Carbonate,"  by  the  same  author,  de- 
scribing the  manufacture  of  dry  ferrous  carbonate,  containing  60 
per  cent,  of  the  ferrous  salt. 
"  Castor  Oil "  (Part  I),  a  resume  of  the  chemical  literature  of  the 
subject,  by  Mr.  H.  Finnemore,  A.I.C.,  and  Mr.  H.  Deane,  B  Sc.,  A.I.C. 
"  Amateur  Laboratory  Construction,"  by  Mr.  Evelyn  W.  Pollard, 
B.Sc.  A  description  of  cheap  forms  of  home-made  apparatus,  in- 
cluding a  still  with  an  electric  alarm  to  give  warning  when  the  still 
is  running  dry.  This  device  consists  of  a  metal  disc  attached  to  a 
cork,  which  acts  as  a  float  in  the  constant  level  tube.  As  the  water 
distils  the  float  falls  until  it  reaches  another  metallic  disc,  when  by 
means  of  wires  attached  to  the  discs  a  circuit  containing  an  electric 
bell  and  a  Leclanche  cell  is  completed  and  the  bell  rings. 
"  Viscosity  of  Mucilages  of  Acacia  and  Tragacanth,"  by  Mr. 
Edmund  White,  B.Sc,  F.I.C.,  who  finds  that  the  viscosity  of  a  mix- 
ture of  these  gums  is  less  than  might  have  been  expected  from  the 
proportions  of  the  two  gums  present.  This  phenomenon  requires 
further  investigation. 
"  Arsenious  Iodide,"  by  Mr.  R.  C.  Cowley  and  Mr.  J.  P.  Catford, 
consisting  of  notes,  and  criticisms  on  methods  of  preparing  the  salt 
and  on  the  official  tests.  A  method  of  preparing  the  salt  by  direct 
combination  is  recommended.  The  new  U.S.P.  reproduces  an  erro- 
neous statement  regarding  the  neutrality  of  solutions  of  the  salt. 
PROGRESS  OF  PHARMACY. 
A  QUARTERLY  REVIEW  OF  SOME  OF  THE  MORE  INTERESTING  LITERATURE 
RELATING  TO  PHARMACY  AND  MATERIA  MEDICA. 
BY  M.  I.  WlLBERT, 
Apothecary  at  the  German  Hospital,  Philadelphia. 
By  far  the  most  important  occurrence,  during  the  past  three 
months,  from  a  pharmaceutical  point  of  view,  was  the  publication 
of  the  new  eighth  decennial  revision  of  the  Pharmacopoeia  of  the  United 
States  of  America.    An  exhaustive  preliminary  review  of  this  publi- 
