288  Constituents  of  Senna.  { 
Am.  Jour.  Pharm. 
June.  1914. 
1 916.    Meanwhile,  manufacturers  may,  and  doubtless  many  will, 
label  their  good  in  compliance  with  the  new  regulations. 
The  decision  is  as  follows: 
FOOD  INSPECTION  DECISION  NO.  1 55. 
Changing  Effective  Date  of  Food  Inspection  Decision  No.  15J, 
which  Amends  Regulation  9,  Relating  to  Guaranties  by  Whole- 
salers, Jobbers,  Manufacturers,  and  other  Parties  Residing  in 
the  United  States  to  Protect  Dealers  from  Prosecution. 
The  effective  date  of  Food  Inspection  Decision  No.  153,  issued 
May  5,  1914,  is  hereby  postponed  until  May  1,  1916;  Provided,  That 
as  to  products  packed  and  labelled  prior  to  May  1,  1916,  in  accordance 
with  law  and  with  the  regulations  in  force  prior  to  May  5,  19 14,  it 
shall  become  effective  November  1,  1916;  And  Provided  Further, 
That  compliance  with  the  terms  of  Regulation  9  of  the  Rules  and 
Regulations  for  the  Enforcement  of  the  Food  and  Drugs  Act  as 
amended  by  Food  Inspection  Decision  No.  153  will  be  permitted  at 
any  time  after  the  date  of  this  decision. 
C.  S.  Hamlin, 
Acting  Secretary  of  the  Treasury. 
D.  F.  Houston, 
Secretary  of  Agriculture. 
Wm.  C.  Redfield, 
Secretary  of  Commerce. 
Washington,  D.  C,  May  29,  1914. 
CURRENT  LITERATURE. 
Constituents  of  Senna. 
An  investigation  of  senna  leaves  to  determine  the  exact  constit- 
uents present  revealed  many  interesting  things  about  this  well-known 
drug. 
Tinnevelly  senna  leaves  (Cassia  angustifolia,  Vahl)  ;  senna  leaves 
from  Lima,  Peru,  which  were  found  to  be  botanically  identical  with 
the  Tinnevelly  leaves,  and  Alexandrian  senna  leaves  were  used. 
An  alcoholic  extract  of  the  Tinnevelly  leaves,  when  distilled  with 
steam,  yielded  a  small  amount  of  an  essential  oil.  From  the  portion 
of  the  extract  which  was  soluble  in  water  the  following  substances 
were  isolated  :  Salicylic  acid,  rhein,  C15H8Oe ;  kaempferol,  C15H10O6 ; 
aloe-emodin,  C15H10O5 ;  kaempferin,  C27H30O16,  6  H20  (m.  p.  1850- 
1950),  a  new  glucoside  of  kaempferol;  a  mixture  of  the  glucosides 
