GLEANINGS  FROM  THE  GERMAN  JOURNALS. 
313 
substituted  for  sesquichloride  of  iron. — (Ann.  d.  Ch.  and  Ph., 
xxxix.  313-318. 
Uxamination  of  Shellac. — A.  Oberdorffer  exhausts  shellac  by 
cold  ether,  which  takes  up  only  the  5  per  cent,  wax  contained 
therein.  Adulterations  with  rosin  and  similar  resins,  soluble  in 
cold  ether,  are  thus  easily  detected. — (Archiv  d.  Pharm.  ciii. 
13,  14.) 
Blue  Milk. — Dr.  E.  Reichardt,  in  examining  a  blue  cream, 
corroborates  Braconnot's  statements,  that  water,  alcohol,  ether 
and  cold  dilute  acids  and  alkalies  are  without  influence  on  the 
color,  which  is  destroyed  by  nitric  acid,  chlorine  and  boiling 
with  potassa.  Neither  phosphate  of  iron,  nor  infusoria  were 
the  cause  of  the  coloration;  it  was  evidently  due  to  a  mould 
which  was  examined  by  the  microscope,  but  the  author  leaves  iS 
undecided  whether  the  fungus  was  Byssus  coerulea,  Lam. — (Arch, 
d.  Ph.  ciii.  25-29.) 
Greek  Tobacco  yields  a  smoke  which  is  free  of  sulphuretted 
hydrogen  and  hydrocyanic  acid.  Landerer  employed  the  same 
method  as  Professor  Vogler,  (Amer.  Jour.  Ph.  1859,  76.)  The 
empyreumatic  liquid  separating  in  pipes,  is  popularly  employed 
in  exantheraatous  complaints,  and  its  use  has  frequently  proved 
fatal.— (Arch.  d.  Ph.  ciii.  29-33.) 
Grlonoine  or  Nitroglycerine  is  obtained  without  difficulty,  ac- 
cording to  J.  P.  Liebe,  if  i  oz.  anhydrous  glycerine  spec.  grav. 
1.273  is  added  with  constant  agitation  to  a  mixture  of  2  oz.  sul- 
phuric and  1  oz.  fumigating  nitric  acid,  spec.  grav.  1.52,  with 
the  precaution  to  keep  the  temperature  below  25"'^  C.  (77°  F.) 
After  one  minute  it  is  poured  in  a  thin  stream  into  50  oz.  cold 
water,  which  is  afterwards  decanted,  while  the  glonoine  is  col- 
lected upon  a  moistened  filter,  washed  with  water,  and  subse- 
quently moderately  heated  until  transparent.  If  the  wash  / 
water  is  repeatedly  used,  the  yield  is  5  drachms  5  to  10  grs.  It 
is  a  light  yellowish  liquid,  spec.  grav.  1.5958,  and  acquires  after 
several  weeks  an  odor  of  nitrous  ether  (Arch.  d.  Ph.  ciii. 
158-160.) 
Glonoine  kept  at  ordinary  temperature,  occasionally  evolves 
nitrous  acid  and  deposits  crystals  of  oxalic  acid.    This  may  be 
