INDEX. 
583 
Gorup-Besanez,  von,  on  the  oil  of  Osmitopsis  astericoides         .          .  313 
Groves,  T.  B.f  on  purification  of  oil  of  bitter  almonds   .          .          .  351 
Gnmebcrg,  H.,  on  pyrogallic  acid            .....  362 
Gutta  percha  cements       .          .          .          •          •          •          •  88 
Hanbnry,  Daniel,  note  on  scammony       .          •          •          .          •  146 
Hanbury,  Daniel,  ~n  storax  bark             .....  448 
Hausmann,  S.,  on  the  nitrates  of  iron     .  .  .  •  .316 
Heavy  calcined  magnesia  .......  193 
Hoeren,  Prof.,  on  the  preparation  of  copal  varnish        .          .          •  342 
Heintz,  Prof.,  on  the  composition  of  butter       ....  150 
Heliotrope,  essenee  of  ...  368 
Herapath,  Dr.  Wm.  Bird,  on  the  optical  properties  of  iodo-sulphate  of 
quinine,  &c.    .  .  .  .  .  .  .18 
Herapath,  Thornton  J.,  were  the  Egyptians  acquainted  with  nitric  acid  ?  62 
Herapath's  patent  for  sulphate  of  quinia  .....  455 
Hamdon,  Lieut.,  on  the  atmospheric  pressure  at  the  Eastern  base  of  the 
Andes           ........  71 
Herring,  Edward,  process  for  sulphate  of  quinia            ...  10 
Honeysuckle,  essence  of  .  .  .  •  .  .  .  370 
Howard,  Robert,  on  manufacture  and  consumption  of  quinine  in  the 
United  States            .......  309 
Howard,  Robert,  on  the  method  of  distinguishing  quinine  from  quinidin  453 
Hydroferrocyanic  acid       .......  80 
Hydrargyrum  cum  creta  .......  70 
Hydrocotyle  Asiatica       .......  222 
Hydrocyanate  of  iron       .......  504 
Identity  of  voltaic  and  frictional  electricity       ....  259 
Sgasurin     .  .  .  .  .  .  .  .  .31 
Incompatibility  of  iodide  of  potassium  with  calomel  and  other  mercurials  222 
luce,  Joseph,  on  study       .......  529 
Iodide  of  iron,  extemporaneous  preparation  of                .           .           »  6 
Iodide  of  iron,  preparation  of       ......  8 
Iodide  of  iron,  saccharated          ......  303 
Iodide  of  potassium,  examination  of        ....  293 
Iodide  of  potassium,  new  process  for                 .          .          .          .  314 
Iodide  of  potassium,  preparation  of         .....  319 
Iodide  of  sodium   ........  305 
^odide,  its  production  in  France    ......  82 
Iodine,  its  occurrence  in  natural  products           ....  438 
Iodine  and  bromine  in  Chili  nitre             .....  161 
lodosulphate  of  quinine,  properties  of  .  .  .  .18 
£oduretted  oil        .......  304 
Ipecacuanha,  alcoholic  extract  of           .....  236 
ipecacuanha,  American    .......  490 
Iron  alum  .........  159 
Iron  by  hydrogen  ........  211 
Iron,  some  double  salts  of           ......  307 
Iron,  nitrates  of    .          .          .          .          .          .          ;          ,  316 
lrons  new  process  for  making  powder  of  .          .          .          .          .  450 
