INDEX. 
579 
Benzoic  acid  from  urine    ..........  23 
Berthollet,  M.,  on  the  production  of  alcohol  from  bicai  buretted  hydrogen  258 
Berthollet  and  De  Luca,  on  the  artificial  production  of  oil  of  mustard       .  521 
Winks,  C,  improvements  in  the  composition  of  paints      ....  175 
Binoxide  of  lead,  preparation  of   20 
Bitumen  springs  of  California    377 
Bituminous  coal,  volatile  liquids  produced  from        .....  551 
Black  pepper  of  Western  Africa,  19,  267 
Black  stain  for  wood   429 
Blevgini,  M.  G.,  on  the  falsification  of  cream  of  tartar  with  sugar  of  milk,  451 
Block,  ill.,  on  the  preparation  of  pure  carbonate  of  potash        .       .      '.  26G 
Blistering  plaster,  on  a  new     .........  499 
Bolley,  Dr.,  on  the  advantages  of  Twaddle's  over  Beaume's  and  Beck's 
hydrometers   343 
Bolley,  P.  A.,  on  saponin  and  senegin       .......  43 
Bonis,  J.,  on  the  oil  of  the  purging  nut    .       .       .        .       .       .  .141 
Bouquets  and  nosegays  in  perfumery        .......  176 
Bouquet  d'Amour   177 
Bouquet  des  fleurs  du  val  d'Andorre         .   177 
Bouquet  de  Caroline  17S 
Bouquet  de  Flora      ..."   181 
Bouquet  de  Jockey  Club    181 
Bouquet  de  Marechale      ..........  275 
Bouquet  de  la  Reine   275 
Bouquet  de  Montpellier   275 
Bouquet  of  all  Nations      ..........  275 
Bouquet  du  Roi   275 
Bonrgarel,  M.,  on  the  preparation  of  rennet  and  whey      ....  456 
Brett,  R.  H.,  Esq.,  on  the  action  of  iodic  acid  on  the  vegetable  alkalies   .  57 
Briant,  M.,  on  a  new  process  for  electro-gilding      .       .       .       .       .  356 
Brown  Windsor  soap   562 
Buckingham  Palace  bouquet  178 
Buchner,  L.  A.,  on  a  method  of  freeing  sulphuric  acid  from  arsenic  .  .417 
Bnnsen,  M.,  on  lithium  and  strontium      .......  359 
CafFein,  physiological  effects  of        ........  109 
CafFein,  on  preparation  of        .......       8       .  225 
CafFein,  reagent  for   272 
Cake  cochineal        ...........  262 
Calvert,  Prof.,  on  the  purification  of  coal  naphtha    .....  58 
"       «     on  the  action  of  tannin  and  gallic  acid  on  alumina  mordents  82 
Cald well,  Alonzo,  on  tincture  of  muriate  of  iron       .       .       .       .  .211 
Camphor  soap          .........  561 
Cantharides  among  the  lawyers   85 
Cantharides,  amount  of  water  in  commercial    ......  86 
Canavan,  John,  on  fluid  extract  of  red  bark     ......  229 
Cannabis  sativa,  preparations  of,  in  India        .       »       •       •       •       •  360 
Caoutchouc,  on  the  extraction  of  •  542 
