72  Verbascum,  Ambrosia  and  Lycopus.  {AmYeb*\m& 
Per  Cent. 
Volatile  oil,   o*io 
Fat  melting  at  6o°  C,  .   r8o 
Wax  melting  at  68°  C,   o'o8 
Resin,  Chlorophyll  and  Glucoside,   278 
Gum  and  Mucilage,   1  *6i 
Dextrin  and  Glucose,   2*89 
Saccharose,   1  97 
Albuminoids,   1-87 
Pectin,   2*42 
Incrusting  substance,   1778 
Lignin  and  Cellulose,   51  -19 
Ash,.    .  .  .  ...  .  .  ....  .''i  .  .  '.      .  .           '.  -.  9*25 
Moisture,     ....  1   6  26 
IOO'OO 
.  Joseph  L.  Weil  analyzed^Lj/coflus  virginicus  and  found  it  to 
contain  0*41  per  cent,  of  a  fat  melting  at  500  C,  0*68  per  cent, 
of  a  granular  wax  melting  at  700  C,  a  small  amount  of  gallic 
acid,  0-43  per  cent,  of  a  crystallizable  resin  soluble  in  ether, 
chloroform,  benzol  and  slightly  soluble  in  95  per  cent,  alcohol, 
a  small  quantity  of  tannin,  a  crystallizable  glucoside  and  the 
usual  plant  constituents. 
The  crystalline  glucoside  may  be  obtained  by  extracting  the 
drug  with  ether,  recovering  solvent  and  treating  residue  with 
water  which  removes  the  glucoside,  from  which  it  may  be 
removed  by  agitation  with  ether.  Alcohol  may  be  used 
instead  of  ether  to  exhaust  the  drug.  The  glucoside  decom- 
poses so  readily  that  it  is  difficult  to  obtain  pure,  the  products 
of  decomposition  being  an  amorphous  resin-like  body  and 
glucose. 
The  crystalline  resin  can  be  obtained  in  the  same  extraction 
with  ether.  After  the  removal  of  the  glucoside  from  the 
ethereal  extract  by  water,  the  resinous  residue  when  dissolved 
in  hot  absolute  alcohol,  will  in  part  deposit  as  crystals,  which 
soften  at  ii3°C,  but  refuse  to  melt  at  2oo°C. 
The  drug  is  used  almost  exclusively  by  the  Eclectics. 
Resorcin in  Whooping-  Cough. — Dr.  Andeer  {Centralbl.f.  Med.  Wiss.) 
employed  resorcin  successfully  in  the  complaint  named,  giving  to  children  half 
a  wineglassful  of  a  2  per  cent,  solution  in  water,  of  which  a  portion  was 
directed  to  be  used  as  a  gargle. 
