52 
Lasiosiphon  Meissneriamis. 
f  Am.  Jour.  Pbann. 
I    Fcbriiaiy,  1911. 
Petroleum  (b.  p.  35-50°)  extracted.  0.20  Gm.  =  0.80  per  cent. 
Ether  "        0.45    "  =  1.80  " 
Chloroform  "        o.io    "  =0.40  "  " 
Ethyl  acetate  "        0.60    "  =  2.40  "  " 
Alcohol  "        2.10    "  =8.40  "  " 
Total,  3.45  Gm.  =  13.80  per  cent. 
For  the  purpose  of  a  complete  examination  a  quantity  (29.94 
kilogrammes)  of  the  ground  material  was  extracted  by  continuous 
percolation  with  hot  alcohol,  this  operation  having  been  kindly  con- 
ducted by  Messrs.  Stafford  Allen  and  Sons,  of  London.  After  the 
removal  of  the  greater  portion  of  the  alcohol,  a  viscid,  dark  colored 
extract  was  obtained,  amounting  to  7.98  kilogrammes. 
The  whole  of  the  above-mentioned  extract  was  mixed  with 
water,  and  distilled  in  a  current  of  steam  in  a  suitable  apparatus 
for  several  hours,  but  no  essential  oil  or  other  volatile  product  was 
obtained. 
After  the  above  operation  there  remained  in  the  distillation  ap- 
paratus a  quantity  of  a  dark  brown  resin  and  a  dark  colored  aqueous 
liquid.  The  resin  was  separated  by  filtration,  and  well  washed  with 
hot  water  until  nothing  further  appeared  to  be  removed.  The 
aqueous  liquid  and  washings,  on  cooling,  deposited  a  brown,  resinous 
product,  which  was  separately  collected,  and  amounted  to  320 
grammes.  A  small  portion  (25  grammes)  of  this  product  was 
dissolved  in  alcohol,  mixed  with  purified  sawdust,  and  extracted  in 
a  Soxhlet  apparatus  with  the  following  result : 
Petroleum  (b.  p.  35-50°)  extracted,  nil   
Ether  2.0  Gm.  ~  8.0  per  cent. 
Chloroform  "  nil   
Ethyl  acetate  "          5.0  Gm.  =  20.0  per  cent. 
Alcohol  "        17.0  Gm.  =  68.0  per  cent. 
Total,  24.0  Gm.  =  96.0  per  cent. 
These  extracts  were  entirely  resinous,  and,  although  subjected 
to  treatment  both  with  acids  and  alkalis,  nothing  definite  could  be 
obtained  from  them. 
The  aqueous  liquid,  from  which  the  resinous  material  had  been 
completely  removed,  was  concentrated  to  a  small  bulk,  and  shaken 
with  ether,  but  only  a  trace  of  an  amorphous  product  was  thus  ob- 
