GLEANINGS  FROM  GERMAN  JOURNALS. 
319 
and  from  iodide  of  potassium,  and  possesses  a  yellowish  green 
color.    (Pharm.  Zeitschr.  f.  Russl.,  1866,  382.) 
New  marking  ink,  by  E.  Jacobsen.  No.  1.  8*52  grm.  crys- 
tallized choride  of  copper,  10*65  grm.  chlorate  of  soda,  and  5.35 
grm.  chloride  of  ammonium  are  dissolved  in  60  grm.  water. 
No.  2.  Twenty  grammes  muriate  of  aniline  dissolved  in  30 
grm.  water,  and  mixed  with  20  grm.  mucilage  of  gum  arabic  and 
10  grm.  glycerine.  Four  parts  of  No.  2  are  mixed,  cold,  with 
one  part  of  No.  1,  and  this  mixture  is  used  for  marking.  The 
parts  marked  are  held  in  the  vapors  of  boiling  water,  which 
brings  out  the  black  color ;  after  which  the  cloths  on  the  parts 
marked  are  washed.  (Ph.  Zeitung. — N.  Jahrb.  f.  Pharm.,  1867, 
Jan.  46.) 
Dusseldorf  mustard.  Prof.  Artus  recommends  to  mix  §  lb 
each  of  white  and  black  mustard  with  1J  ft)  hot  water,  1  ft)  wine 
vinegar,  1J  drachms  cinnamon,  2  scruples  cloves,  §  lb  white 
sugar,  and  1  ft)  white  wine.  (Ibid.) 
White  liquid  glue.  L.  Knaffl  macerates  three  parts  glue  with 
eight  parts  water,  adds  one-half  part  muriatic  acid  and  three- 
fourths  part  white  vitriol,  and  digests  for  12  hours  at  a  tempera- 
ture of  65  to  70  II.    (Ibid.,  p.  47.) 
Extraction  of  fixed  oils.  H.  Vohl  recommends  coal  oil  of 
*650  to  -700  spec.  gr.  for  this  purpose,  which  yielded  very  good 
products.  (Ibid.) 
Influence  of  nascent  hydrogen  on  alkaloids.  Professor  Roch- 
leder  informs  the  Imperial  Academy  of  Sciences  at  Vienna  that 
he  found  that  quinia,  cinchonia  and  caffeina,  which  persistingly 
withstand  the  influence  of  oxidizing  agents,  are  readily  attacked 
by  nascent  hydrogen.  The  resulting  products  will  be  hereafter 
described.    (Verhandl.  d.  Kais.  Akad.  d.  Wiss.  in  Wien,  1867,  2.) 
Coffeotannic  acid,  according  to  Prof.  Hlasiwetz,  is  a  glucoside, 
splitting,  when  boiled  with  alkaline  solutions,  into  a  sugar  and 
coffeic  acid,  which,  oxidized  by  fusing  hydrate  of  potassa,  yields 
acetic  and  protocatechuic  acids.  The  formula  of  coffeotannic 
acid  appears  to  be  C30H18O16,  splitting,  by  uniting  with  2HO, 
into  coffeic  acid,  C18II808,  and  mannitan  (?)  C12HpO10.  (Ibid, 
2,  3.) 
