402 
GLEANINGS  FROM  GERMAN  JOURNALS. 
phate,  little  cinchonidia,  quinidia,  cinchonia  and  amorphous 
base.  J. 
No.  IV.  M.  Java  Royal  Cinchona. — Alkaloids  1-5  per  cent, 
soluble  (with  little  quinidia),  1-0  per  cent,  insoluble  in  ether. 
G. — 1'9  per  cent,  alkaloids  with  0-5  per  cent,  quinia  —  0*7 
sulphate,  cinchonia,  some  cinchonidia,  quinidia  and  amorphous 
base.  J. 
T.  P.  Brown  Java  Cinchona. — Alkaloids:  1-1  per  cent,  solu-' 
ble,  0*9  per  cent,  insoluble  in  ether.  G. — 1*2  per  cent,  alkaloids, 
mostly  cinchonidia  and  amorphous  base,  trace  of  quinia  ;  neither 
cinchonia  nor  quinidia.  J. 
The  latter  is  undoubtedly  Pahudiana  bark.  The  propagation 
of  the  plants  yielding  it  has  been  prohibited  by  the  Dutch 
government.  Nos.  II  k  111  approximate  bad  Calisaya  bark,  as 
at  present  frequently  met  with.  The  present  Java  cinchona 
barks  are  not  yet  adapted  to  the  manufacture  of  quinia,  though 
they  may  be  used  in  place  of  the  grey  and  brown  Huanuco  and 
Loxa  barks,  w^hich  at  present  are  rather  scarce.  The  price  of 
the  Java  cinchonas  is  3  guilders  ($1.20  gold),  per  kih.—Buch' 
7iers  JSr.  liepert.  1870,  311-345. 
Behavior  of  ferroso-ferric  oxide  to  saline  solutions. — Dr.  J.  B. 
Schober  observed  that  this  oxide  has  the  property  of  absorbing 
certain  salts  from  their  dilute  aqueous  solutions,  and  fixing  them 
in  such  a  way  that  they  cannot  be  removed  by  washing.  This  is 
the  case  with  the  nitrates  of  leiid,  silver,  copper  and  nickel,  the 
sulphates  of  copper,  iron  and  zinc,  stannic  chloride,  &c.,  also 
organic  matter.  Alum,  chromic  alum  and  tartar  emetic  are 
decomposed,  the  salt  of  the  alkali  remaining  in  solution.  Baryta 
salts  are  with  difficulty  absorbed,  still  more  difficult  the  lime  and 
strontia  salts.  Corrosive  sublimate,  magnesia  and  alkali  salts 
are  not  absorbed.  Oxide  of  iron  appears  to  have  similar  prop- 
erties, but  in  a  less  degree. — Ihid.  345-348. 
Tinfoil  containing  lead  to  the  amount  of  from  1  to  19  per  ct. 
is  often  met  with.  Aug.  Yogel  found  that  soap,  chocolate  and 
dry  candies  wrapped  into  such  foil  for  some  time,  are  not  con- 
taminated with  lead,  but  cheese,  under  similar  circumstances, 
always  contained  lead  in  and  near  the  rind,  in  small  proportion. 
—Ihid.  348-351. 
