Am.  Jour.  Phi 
May,  1895. 
'•}  Notes  on  Some  Saps  and  Secretions. 
251 
of  oil  in  a  test  tube,  closed  with  gum.  After  shaking  it  for  several 
seconds,  allow  the  tube  to  rest  in  a  vertical  position  for  five  or  six 
minutes.  If  the  oil  is  from  olives,  the  liquid  is  at  first  pale  or 
colorless,  changing  to  an  ashy  gray,  with  a  slight  yellowish  hue. 
On  shaking,  a  coffee-brown  color  will  be  seen  if  cotton-seed  oil  is 
present.  The  reaction  is  delicate  enough  to  detect  an  adulteration 
of  5  per  cent,  of  cotton-seed  oil. 
The  shipments  of  cotton- seed  oil  from  the  United  States  have 
progressed  as  follows  in  decennial  periods : 
With  the  extended  production  of  cotton  in  various  countries — 
India,  China,  Egypt,  Brazil  and  the  United  States — a  great  future 
awaits  cotton-seed  oil.  Some  idea  of  the  magnitude  of  the  future 
may  be  formed  from  the  fact  that  British  India  produced  in  1889  a 
little  over  9,000,000  cwt.  of  cleaned  cotton  ;  that  amount  must  have 
been  obtained  from  27,000,000  cwt.  of  seed.  Allowing  half  this  to 
be  required  for  home  consumption  and  seed  for  next  crop,  over 
6,000,000  cwt.  of  seed  should  have  been  available  for  export, 
whereas  the  export  of  seed  has  hitherto  seldom  reached  37,000  cwt. 
This  year  the  export  of  seed  will  be  larger,  as  for  the  nine  months 
already  expired,  nearly  89,000  cwt.  has  been  shipped.  The  weight 
of  seed  may  be  estimated  at  three  pounds  for  every  pound  of 
cleaned  cotton. 
NOTES    ON    SOME    SAPS     AND    SECRETIONS    USED — 
Garcinia,  sp.  The  yellow  gum  resin  known  as  gamboge  and  used 
as  a  pigment  and  in  medicine  is  believed  to  be  obtained  from  differ- 
ent species  of  this  family.  From  G.  cochin  c/iinensis,  Chois.,  G. 
Morella,  Desv.,  G.  pictoria,  Roxb.,  G.  Hanbitrii,  Hook.  fil.  Several 
Indian  species  of  Garcinia  seem  to  furnish  gamboge. 
It  is  chiefly  received  from  Siam  in  the  form  of  pipe  or  roll,  and  in 
cylindrical  masses.  It  has  a  faint  odor,  and  an  acrid,  rancid,  after- 
wards sweetish  taste.  It  is  employed  medicinally  in  the  treatment 
of  dropsical  affections,  amenorrhoea  and  obstinate  constipation, 
Gallons. 
1873 
1883 
1893 
709,576 
415,611 
9,462,074 
IN  PHARMACY. 
By  P.  Iv.  Simmonds,  F.L.S. 
[Continued  from  p. 
