146 
Correspondence. 
f  Am.  Jour.  Pharm. 
February,  19 18. 
to  succeed  the  former  June  I,  1917.  The  Digest  of  Comments  for 
the  calendar  year  ending  December  31,  191 5,  has  been  completed 
and  is  ready  for  publication,  and  considerable  progress  has  been 
made  in  the  preparation  of  the  abstracts  for  the  1916  bulletin. 
Department  of  Agriculture, 
Bureau  of  Chemistry, 
Washington,  D.  C, 
January  11,  19 18. 
Dr.  George  M.  Beringer,  Editor, 
American  Journal  of  Pharmacy, 
145  North  Tenth  Street, 
Philadelphia,  Pa. 
Dear  Doctor  Beringer:  My  attention  has  just  been  called  to  the 
November,  1917,  issue  of  the  American  Journal  of  Pharmacy, 
in  which  you  have  reprinted  a  number  of  the  Service  and  Regulatory 
Announcements  of  this  Bureau  of  interest  to  the  drug  trade.  I  am 
pleased  to  note  that  you  have  published  them  in  your  journal  and 
thus  assisted  in  the  dissemination  of  the  information  contained  in 
them. 
I  would  like,  however,  to  call  your  attention  to  an  error  which 
appeared  in  the  Service  and  Regulatory  Announcement  regarding 
the  method  for  the  determination  of  volatile  oil  in  mustard  seed. 
The  copy  supplied  by  this  Bureau  to  the  printer,  and  also  the 
galley  proof  returned,  were  correct,  but  for  some  unexplainable 
reason  the  proof  was  changed  again  in  the  printing  office.  In  the 
last  sentence  the  word  "  gram "  should  be  substituted  for  "  grain." 
The  revised  sentence  would  then  read:  "Each  mil  of  0.1  N  silver 
nitrate  consumed  equals  0.004956  gram  of  allylisothiocyanate."  I 
would  appreciate  it  if  you  would  make  this  correction  in  an  early 
issue  of  your  journal. 
Very  truly  yours, 
C.  L.  Alsberg, 
Chief. 
The  attention  of  the  subscribers  and  readers  of  the  American 
Journal  of  Pharmacy  is  directed  to  this  error  with  the  request 
that  they  promptly  note  and  correct  same  on  the  printed  page. 
Editor. 
