Am  Jour.  Pharm.  1 
November,  1898.  j 
Henry  Trimble. 
539 
vise  the  work  of  advanced  students,  and  each  year  many  original 
investigations  in  analytical  chemistry  and  proximate  plant  analysis 
were  carried  out  under  his  guidance.  The  list  of  published  articles 
which  appeared  in  the  American  Journal  of  Pharmacy  under  his 
name  during  the  years  1875-1898  was  fifty-three  in  number. 
Already  in  1890,  he  had  begun  to  make  a  special  study  of  the 
class  of  vegetable  principles  known  as  Tannins,  being  incited  thereto 
by  some  investigations  which  he  had  made  into  the  methods  of  dye- 
wood  extract  manufacture.  The  result  of  this  was  that  in  1892  he 
published  in  a  small  octavo,  the  first  volume  of  a  work  with  the  follow- 
ing title  :  ,(  The  Tannins,  a  monograph  on  the  history,  preparation, 
properties,  methods  of  estimation,  and  uses  of  the  vegetable  astrin- 
gents." In  1894  he  followed  this  by  a  second  volume,  and  at  the 
time  of  his  death  had  a  large  amount  of  unpublished  notes  which 
were  meant  to  be  used  in  a  continuation  of  this  unique  publication. 
I  say  unique,  because  the  work  at  once  took  rank  in  this  country 
and  abroad  as  the  authoritative  work  on  the  subject,  and  Professor 
Trimble  had  for  years  carried  on  an  extensive  correspondence  with 
botanists  and  chemists  in  all  parts  of  the  world  upon  what  came  to 
be  known  as  his  specialty.  Both  of  these  volumes  contained  a  very 
complete  bibliography  of  the  subject,  under  the  heading  "  An  Index 
to  the  Literature  of  the  Tannins,"  and  the  compilation  of  this  bibli- 
ography involved  an  immense  amount  of  painstaking  care  and 
research  in  the  libraries  of  different  scientific  institutions  and  socie- 
ties of  this  city,  and  examination  of  many  foreign  book  catalogues. 
In  this  connection,  it  should  not  be  overlooked  that  Professor 
Trimble  was  an  accomplished  botanist,  having  taken  special  ad- 
vanced instruction  in  this  subject  while  a  student  at  the  University 
and  afterwards  from  Professors  Rothrock  and  W.  P.  Wilson. 
This  familiar  acquaintance  with  the  two  domains  of  chemistry 
and  botany  made  it  an  easy  matter,  therefore,  for  him  to  co-operate 
with  his  colleague,  the  late  Prof.  E.  S.  Bastin,  in  a  series  of  joint 
articles  on  "Some  North  American  Coniferae,"  which  appeared  in 
the  American  Journal  of  Pharmacy,  and  were  reprinted  in  sepa- 
rate form  in  a  pamphlet  of  some  124  pages. 
He  also  became  a  contributor  to  Garden  and  Forest,  published 
under  the  editorship  of  Professor  Sargent,  of  Harvard  University, 
and  during  the  years  1894-98  furnished  seven  articles  for  this 
periodical.    A  more  elaborate  article  on  the  Coniferae  was  also  con- 
