238  GROWTH  OF  CINCHONA  IN  INDIA. 
very  little  soluble  in  water,  ether,  benzol,  and  bisulphide  of 
carbon.  As  we  have  before  said,  it  has  many  chemical  analo- 
gies with  alizarine.  In  fact,  according  to  whether  a  bath  is 
slightly  acid  or  alkaline,  we  can  dye  the  iron  mordants  to  the 
exclusion  of  alum  mordants,  and  reciprocally.  Moreover,  the 
dyed  tissues  bear  brightening  with  soap,  carefully  done,  that  is 
to  say,  progressively.  Finally,  the  coloring  matter  readily  sub- 
limates under  the  influence  of  a  high  temperature. 
It  is  evident,  then,  that  with  binitronaphthaline  and  concen- 
trated sulphuric  acid  only,  without  making  use  of  a  reducing 
agent,  as  M.  Roussin  has  done,  a  coloring  matter  may  be  ob- 
tained with  marked  analogies  to  alazarine  in  its  chemical  prop- 
erties; however,  the  observations  I  have  made  during  my  opera- 
tions, have  led  me  to  doubt  whether  it  is  possible,  even  while 
obtaining  perfect  red  tints,  to  prepare  in  this  way  a  coloring 
matter  identical  with  that  of  the  madder. — Chem.  Neivs,  London, 
Jan.  11,  1862,  from  Comptes  Mendus. 
GROWTH  OF  CINCHONA  IN  INDIA. 
Dr.  Anderson  has  returned  to  Calcutta  from  his  mission  to 
Java,  with  the  large  number  of  412  cinchona  plants  of  three 
species,  and  with  half  a  million  of  seeds.  The  cultivation  of 
cinchona  in  Java,  which  began  with  139  trees  in  1855,  has 
hitherto  been  most  successful,  but  the  Dutch  do  not  possess 
many  specimens  of  the  variety  whose  bark  yields  the  largest 
proportion  of  quinine.  Dr.  Anderson  was  enabled  to  supply 
them  with  some  of  the  best  specimens  in  return  for  their  liberal- 
ity and  courtesy.  Of  one  species  the  Dutch  have  now  no  less 
than  a  million  of  plants,  and  of  two  or  three  others  they  possess 
several  thousands.  In  June,  1857,  the  whole  number  they  had 
was  only  three  hundred,  so  rapidly  have  they  propagated  them- 
selves. The  well  known  German  naturalist,  Dr.  Junghuhn,  is 
in  charge  of  the  plantations,  and  he  was  recently  joined  by  Dr. 
de  Vry,  a  chemist  not  unknown  in  England  to  the  members  of 
the  British  Association.  The  Report  of  the  first  of  these  gentle- 
men, now  before  us,  details,  with  scientific  prolixity  which  we 
shall  not  inflict  upon  our  readers,  the  various  steps  of  the  ex- 
periment.   Southwest  of  Tjibodas,  4,100  feet  above  the  sea,  in 
