566 
Pharmacy  and  Chemistry. 
{Am.  Jour.  Piiarm. 
I  December.  1904. 
loidal  gold  and  silver,  which  lend  themselves  to  antiseptic  treat- 
ments. Peroxide  of  hydrogen  as  a  thick  syrupy  liquid,  100  per 
cent,  in  strength.  This  is  a  product  made  by  the  gentleman  who 
has  studied  peroxide  for  twenty  years.  We  all  know  that  we  can 
make  granulated  salts  of  fine  appearance  if  we  stir  a  hot  concen- 
trated solution  as  it  cools.  The  Germans  are  now  making  many 
salts  of  reasonable  sized  uni  orm  crystals  by  gradually  cooling  a 
slowly  moving  hot  concentrated  solution  o~  the  salt.  Ajar  of  fine 
alum  crystals  of  this  kind  is  shown.  Winkler's  germanium 
exhibit,  process  "or  making  sulphuric  acid  and  his  other  technical 
feats  were  rewarded  by  a  grand  prize. 
In  this  same  room  we  see  the  many  apparatus  used  in  the  study 
of  inorganic  chemistry.  A  wealth  of  fine  graduated  ware,  ther- 
mometers, gas  analysis  appliances,  Jena  glassware,  royal  porcelain 
goods.  These  take  up  room,  they  do  not  hide  themselves;  as  a 
result  many  study  this  eature  of  the  exhibit  thoroughly.  It  is  a 
decided  hit. 
In  the  organic  chemistry  division  the  thousands  of  dyes  that  have 
made  Germany  famous,  or  infamous  when  wrongly  applied,  are 
shown  in  large  array.  A  case  of  some  500  compounds  shows,  for 
a  wonder,  the  historical  development  of  the  industry. 
The  many  beautiful  and  large  samples  o  ceresin  and  of  other 
natural  hydrocarbons  contrast  strongly  with  the  artificial  like  com- 
pounds, derived  from  fish  oil  and  various  vegetable  oils.  The 
Standard  Oil  Company  need  fear  no  competition  from  this  source. 
Looking  at  the  cafTein,  theobromine  and  like  products  indicating 
the  steps  taken  from  the  uric  acid  furnished  so  liberally  by  our 
feathered  friends,  the  sea  birds,  a  fear  that  some  day  we  may  sip  a 
cup  of  coffee  or  cocoa  that  originally  traced  its  ancestry  to  the 
manure  piles  of  the  Pacific,  is  not  altogether  a  pleasant  one. 
Fortunately  all  alkaloids  come  under  one  head,  so  that  the  whole 
branch  is  displayed  in  a  single  case.  The  many  decomposition  pro- 
ducts, commonly  called  Abbau-Produkte,  of  the  alkaloids  that  helped 
chemists  to  study  their  constitution  and  incidentally  make  them 
artificially,  are  instructive. 
Synthetic  perfumes  and  essences  that  vie  with  the  natural  odors 
are  many.  Jonon,  jasmin,  rose  and  the  like  are  in  pint  bottles,  a 
mere  sniff  at  the  stopper  shows  the  fine  quality  of  these  products. 
In  this  room  we  find  the  many  aids  used  to-day  by  the  synthetic 
