594 
INDEX. 
Weaver  Thomas  on  a  process  for  making  dense  and  soft  magnesia  .  214 
White  lip  salve    ......  86 
Wieke,  D.  W,,  preparation  of  pure  silver  from  its  alloy  with  copper  444 
Wilson,  G.  F.,  on  a  process  for  obtaining  and  purifying  glycerin     .  33 
Wild  cherry  bark,  fluid  extract  of     ....  21 
Wine  of  colchicum  seeds,  preparation  of                      .             .  514 
Wine  of  wild  cherry  bark  .             .             .             .             .  109 
Wires  of  the  electric  telegraph          .             .             .             .  371 
Wittstein,  Dr.,  on  cantharidin            ....  231 
"       "    on  fused  cyanide  of  potassium    .             .             .  234 
Winternitz,  J.,  on  the  so  called  alizarin  ink      .             .             .  445 
Wohler,  Fro/.,  on  the  solubility  of  bones  in  water           .             .  443 
{t       "   on  the  preparation  of  coumarin    .             .             „  445 
•£       "   on  the  reduction  of  iron  by  hydrogen        .             .  139 
Wood,  patent  process  for  preserving               .             .             .  471 
Wood  oil,  a  substitute  for  copaiba  159 
Writing  iaks       .              ...              .              .              .  185 
Wright,  Chas.  TP.,  Dr.,  on  liquidambar  and  styraciflua     .             .  413 
Wright,  S.  T.,  M.  D.,  on  pills  of  iodide  of  iron    .             .             .  515 
tVurtz,  Henry,  on  the  composition  of  Delaware  river  water           .  427 
Zinc,  cement  of  oxychloride  of                                  .  165 
