Am.  Jour.  Pharm.  I 
May,  1910.  f 
Abstracts  of  Chemical  Theses. 
241 
ment  of  both  research  chemists  and  chemical  engineers  effected  in- 
dustrial revolutions,  one  after  the  other,  like  the  introduction  of 
artificial  indigo,  the  contact  sulphuric-acid  manufacture,  and  last  of 
all  the  production  of  air-salpetre  or  artificial  nitric  acid  and  nitrates, 
are  those  which  reap  the  rich  commercial  rewards  and  for  the  reason 
that  they  have  done  the  work  and  earned  them.  The  hope  of  a  suc- 
cessful American  chemical  industry  lies  in  the  same  direction. 
ABSTRACTS  OF  THESES  ON  CHEMICAL  SUBJECTS.* 
By  J.  W.  Ehman. 
Phenyl  Salicylate  (R.  J.  Wotring). — Chiefly  a  study  of  the 
liquefaction  of  mixtures  of  salol  with  other  substances.  Salol  and 
menthol  may  be  mixed  in  the  proportion  of  one  molecular  weight  of 
the  former  to  three  of  the  latter,  also  in  the  proportion  of  three  to 
two  molecules  to  form  a  dry  powder ;  two  molecules  salol  to  three 
menthol  produce  a  damp  powder  and  equal  molecules  of  each 
liquefy. 
Salol  and  camphor  in  different  proportions  produce  either  pasty 
mixtures  or  liquids. 
Salol  with  either  phenacetine,  antipyrin,  or  salicylic  acid  will 
result  in  dry  powders,  but  the  addition  of  a  small  amount  of  camphor 
to  either  mixture  will  cause  liquefaction.  Salicylic  acid  with  camphor 
alone  forms  a  dry  powder. 
Three  molecules  of  salol  to  one  of  thymol  or  one  of  salol  to  three 
of  thymol  form  pasty  mixtures ;  in  other  proportions  they  liquefy. 
Either  one  or  three  molecules  of  salol  to  two  of  chloral  hydrate 
form  moist  powders,  but  in  other  proportions  dry  mixtures  result. 
Salol  and  resorcinol  in  different  proportions  form  dry  powder. 
With  acetanilid  a  dry  mixture  results,  but  the  addition  of  antipyrin 
causes  liquefaction. 
Either  beta-naphthol,  pyrogallol,  or  sodium  salicylate  mixed  with 
salol  results  in  dry  mixtures.  While  salol  with  either  antipyrin  or 
resorcinol  forms  dry  powder,  when  all  three  are  mixed  a  pasty  mass 
results. 
*  The  experimental  work  embodied  in  these  theses  was  performed  in  the 
chemical  laboratory  of  the  Philadelphia  College  of  Pharmacy. 
