AFebrTaryT?9aor6m'}  London  Botanic  Gardens.  69 
Museum  III  (see  Plates  V  and  X)  is  devoted  to  Timbers.  The 
building  was  erected  in  1761  as  an  orangery  for  the  Princess  Augusta. 
It  was  subsequently  used  as  an  Australian  House,  until  opened  as 
a  Timber  Museum  in  1863.  The  collections  originated  with  the 
exhibits  of  Colonial  timbers  from  the  London  International  Exhibi- 
tion of  1862,  and  were  greatly  increased,  in  1878,  by  the  gift  to  Kew 
of  a  rich  collection  of  timber  products  from  the  Indian  Government, 
and  of  a  still  more  extensive  one  from  the  India  Office  in  1880.  The 
specimens  in  Museums  No.  I  and  No.  II  are  arranged  according  to 
natural  orders  (Bentham  &  Hooker),  and  maps  are  placed  in  the 
cases  containing  them,  indicating  their  geographical  sources.  In  the 
Timber  Museum  the  collections  are  arranged  geographically.  The 
total  number  of  economic  specimens  exhibited,  other  than  woods,  is 
about  20,000.  The  wood  specimens  (including  the  timber  collections 
in  Museum  III,  and  the  smaller  wood  specimens  in  the  other  two 
museums)  number  6,500.  A  large  proportion  of  these  specimens 
are  drugs,  but  the  actual  figures  are  not  available. 
In  1880,  the  "North"  gallery  was  completed.  This  building, 
presented  to  the  nation  by  Miss  Marianne  North,  and  containing  an 
extensive  collection  of  paintings  of  tropical  and  sub-tropical  plants 
executed  by  her,  was  opened  to  the  public  in  July,  1882. 
The  Laboratory  (see  Plate  X),  founded  by  the  late  J.  T.  Phillips 
Jodrell,  and  hence  known  as  the  Jodrell  Laboratory,  was  commenced 
in  1875  and  completed  in  1876.  It  is  used  primarily  for  research 
purposes,  and  the  following  workers,  among  others,  have  conducted 
investigations  in  it :  Burdon-Sanderson,  Romanes,  Church,  Lauder- 
Brunton,  Hugo  Muller  (chemical  constituents  of  the  leaves  of  Sabal 
umbraculiferd),  Rev.  R.  Abbay,  F.  Darwin,  Marshall  Ward,  Pfitzer, 
Bower,  Cross  &  Bevan  (on  cellulose),  W.  Gardiner,  E.  Schunck  (on 
chlorophyll),  Lord  Avebury,  G.  Massee  (on  fungal  plant  diseases), 
De  Wevre  (on  cubebs,  etc.),  J.  R.  Green  (on  diastase ;  and  other 
researches),  and  D.  H.  Scott  (the  present  Honorary  Keeper). 
The  Herbarium  and  Library  (see  Plates  X  and  XV). — It  will  be 
remembered  that  towards  the  close  oi  Sir  Joseph  Banks'  life,  a 
house,  called  Hunter  House — from  the  name  of  its  owner,  Robert 
Hunter,  a  successful  man  of  business  who  had  settled  at  Kew — was 
purchased  by  George  III,  and  added  to  the  Royal  property.  At 
the  instance  of  Sir  Joseph  Banks  it  was  determined  to  devote  this 
to  the  accommodation  of  a  botanical  library  and  herbarium,  and  one 
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