2()0 
point  ol  altnchment  of  the  nodule  to  tlie  root,  e.g.  Albizzia  moluc- 
cana  and  Entada  scandens.  Nodules  of  the  former  class  are  more 
easily  confused  with  eel-worms  than  those  of  the  latter  group. 
Both  hinds  occur  on  the  roots  of  Acacia  d'^ciirrens. 
With  a view  of  obtaining  some  definite  knowledge  of  the  abun- 
dance or  otherwise  of  .the  nitrogenous  nodules  on  plants  which  are 
common  in  Ceylon  the  following  classification  has  been  com- 
menced : — 
Plants  posskssing  Xhrogenous  nodules. 
Climbers'. — Entada  scandens  (Woody  climber) ; Phaseolus  vulgaris  ; 
Mucuna  pruriens;  Canavalia  ensiformis;  Abrus  precatorius; 
Dolichos  fa  1 cat  us. 
H erbaceous  plants'.— or  Perennial;  Crotalaria  striata  ; ('. 
incana;  ('.  verrucosa;  C.  semperHorens ; C.  laburnifolia.  Mi- 
mosa pudica  (introduced);  Pseudarthria  viscida;  Vicia  sativa; 
Desmodium  trillorum  ; D.  jucundum  ; D.  heterophyllum. 
Cassia  tora  ; C.  mimisoides;  C.  hirsuta;  C.  absus;  Alyssi- 
carpus  vaginalis;  A.  bupleurifolius : Indigofera  trita;  I.  pau- 
cifolia  ; 'Tephrosia  purpurea. 
Trees', — Albizzia  moluccana;  A.  stipulata;  A.  odoratissima ; Pithe- 
( olobium  saman  ; P.  dulce  ; xA.cacia  decurrens;  A.  arabica  ; 
Leucaena  glauca  ; Erythrina  lidiosperma;  E.  ovalifolia  ; E. 
indica;  E.  umbrosa;  Cassia  grandis ; Bauhinia  tr’andra;  Colvil- 
lia  racemosa;  Sesbania  grandiflora;  Ormosia  das\carpa;  Dal- 
bergia  armata  ; Pterocarpus  indicus  ; P.  echinatus  : Amher- 
stia  nobilis;  Marduickia  pinnata  ; Lonchocarpus  latifolius; 
Psupliocarpus  letragonobolus  ; Pongamia  glabra;  Brya  ebe- 
nus  ; 1 )imorphandra  mora  ; 'rrac'hylubium  vernu  osum  ; Co- 
paifera  officinalis. 
It  will  be  noiiced  that  no  statement  is  made  as  to  the  percentage 
of  nitrogen  in  the  nodules,  d'he  work  up  to  the  pre.sent  has  con- 
sistf'd  of  collecting  our  best  nati\e  and  introduced  s[>ecies  and 
determining  the  weight  of  the  tiodules  per  plant.  A series  of 
experiments  in  beds  and  tins  has  also  been  arranged  to  determine 
the  increase  in  percentage  of  nitrogen  in  soil  which  has  been  occu- 
pied for  a definite  period  with  a particular  species.  The  selected 
plants  include  our  common  species  of  Albizzia,  Crotol ana  and 
Erythrina,  and  several  imported  species. 
Agricultural  Journal  of  the  Royal  Botanic  Gardens, 
Ceylon^  April,  igoj. 
BLUMEA  BALSAMIFERA. 
In  the  Bulletin  Economique  de  PIndo  Chine  No.  i8  for  June, 
1Q03,  is  an  analysis  of  the  Camphor  obtained  from  this  plant  by  the 
natives  of  Laos  and  Tonkin,  d'he  sample  came  from  the  province 
