^mjuiy"r;876arm* }        The  International  Exposition.  325 
case  of  Powers  &  Weightman,s  being  1,003  ounces.  Chinoidin  is  likewise  to  be 
found  in  both  places  in  very  considerable  quantities. 
Among  the  new  or  rarer  salts  exhibited  by  both  firms,  may  be  mentioned  the 
handsomely-crystallized  bisulphates  of  the  four  cinchona  alkaloids,  which  are  more 
•soluble  than  the  sulphates  ordinarily  employed— the  hydrobromates,  hydriodates, 
hydrochlorates,  phosphates,  acetates,  citrates,  etc.,  of  one  or  more  cinchona  alka- 
loids. Similar  salts  of  the  same  alkaloids  are  likewise  shown  by  Ch.  T.  White  & 
Co.,  and  amongst  them  is  particularly  noticeable  a  very  handsomely-crystallized 
sample  of  valerianate  of  quinia.  In  this  connection  it  may  not  be  amiss  to  again 
call  attention  to  the  incorrectness  of  naming  the  compounds  of  alkaloids  with  hydro- 
bromic  acid  bromides;  since  in  these  combinations  the  hydrogen  of  HBr  is  not  dis- 
placed, their  correct  appellation  is  hydrobromates. 
Directly  opposite  to  the  chemical  exhibits  of  the  United  States  is  the  chemical 
section  of  the  German  empire,  in  which  we  find  compounds  of  the  cinchona  alka- 
loids, exhibited  only  by  Jul.  Jobst,  of  Stuttgart,  the  other  quinia  manufacturers  being 
not  represented.  Besides  several  of  the  salts  mentioned  above,  we  find  here  crys- 
talline masses  of  a  compound  marked  Chininum  sulfuricum  biacidum  (tetrasulphuri- 
cum),  and  which,therefore,appears  to  be  a  definite  compound  of  one  molecule  of  quinia 
and  four  of  sulphuric  acid.  The  results  of  Jobst  and  Hesse's  observation,  mentioned 
in  another  place  (see  page  328),  are  shown  in  small  samples  of  phenated  muriate  and 
sulphate  of  quinia,  named  by  them  phenylmuriate  and  phenylsulphate,  names  which, 
at  least  for  pharmaceutical  purposes,  appear  to  us  to  be  less  desirable  than  the  for- 
mer, because  one  may  be  confounded  with  the  sulphophenate  (sulphocarbolate)  from 
which  it  is  entirely  distinct.  Since  the  new  salts  liberate  carbolic  acid  very  readily 
sunder  various  circumstances,  they  may  probably  be  destined  to  become  important 
•remedies.  Salicylate  of  quinia,  the  only  specimen  noticed  by  us,  is  exhibited  by 
the  same  firm  ;  also,  the  handsomely-crystallized  compound  of  quinia  with  anethol, 
•discovered  some  years  ago  by  O.  Hesse.  It  has  the  taste  of  quinia  and  anise,  and 
when  heated  evolves  anethol.  The  conchinin  (Hesse's)  and  its  preparations  exhib- 
ited, are  identical  with  Pasteur's  quinidia  ;  but  the  chinamin  is  an  alkaloid,  discovered 
by  O.  Hesse  in  the  bark  of  Cinch,  succirubra,  cultivated  in  British  India,  and  the 
name  of  which  we  rendered  with  quinamina  ("Amer.  Jour.  Phar.,"  1872,  p.  302), 
when  noticing  Hesse's  original  papei.  The  phenylsulphate  of  cinchonidia,  we 
suppose,  belongs  to  the  same  class  of  compounds  noticed  above,  but  we  do  not  e- 
snember  having  met  with  an  account  of  it. 
It  will  be  observed  that  in  this  exhibit — notwithstanding  the  large  case  and  the 
small  bottles  by  which  attention  is  first  attracted  to  it — we  meet  the  results  of  very 
considerable  original  research. 
Some  distance  to  the  northwest  of  the  former,  and  just  at  the  entrance  to  the 
exhibits  of  Jamaica,  we  observe  a  stem,  22  feet  high,  of  Cinchona  succirubra.  We 
are  informed  by  Mr.  Robt.  Thomson,  Superintendent  of  the  Government  Botonical 
Gardens,  at  Kingston,  Jamaica,  and  commissioner  to  this  exposition,  by 
whom  the  very  interesting  and  instructive  collection  from  Jamaica  has  been  very 
judiciously  arranged,  and  to  a  considerable  extent  furnished,  that  the  cultivation  of 
cinchonas  was  commenced  there  by  the  government  in  1868,  the  plantation  now 
consisting  of   300  acres,  about  40  acres  having  been  planted  annually.  The 
