312  GLEANINGS  FROM  THE  GERMAN  JOURNALS. 
dissolves  without  the  trouble  of  heating,  yielding  a  clear  syrup 
which  keeps  perfectly  well  and  may  be  drawn  off  through  a 
molasses  gate,"  as  wanted. 
Philadelphia,  Sixth  month  11th,  1861. 
GLEANINGS  FROxM  THE  GERMAN  JOURNALS. 
By  Jno.  M.  Maisch, 
A  Solution  of  Starch  t'or  volumetric  analysis  is  prepared  by 
Dr.  F.  Mohr,  by  trituration,  with  concentrated  chloride  of  zinc, 
and  diluting  with  water  ;  the  solution  is  not  clear,  but  after 
precipitating  the  zinc  by  carbonate  of  soda,  the  filtrate  is  trans- 
parent.— (Ann.  d.  Ch.  and  Ph.  xxxix.  211-213.) 
Oenanthio  Acid. — A.  Fischer,  operating  in  Fresenius'  labora- 
tory, states  that  the  oenanthic  acid  of  wine  of  fusel  oil  is  a  mix- 
ture of  volatile  fatty  acids,  among  which  are  caprinic  and  capry- 
lic  acid. — (Ann.  d.  Oh.  and  Ph.  xxxix.  247.) 
Phosplio-molyhdic  Acid. — Prof,  de  Vrij  claims  priority  for  dis- 
covering this  test  for  alkaloids  in  1853,  as  will  be  seen  from 
Journal  de  Pharm.  et  de  Chim.  xxvi.  219. — (Ann.  d.  Ch.  and 
Ph.  xxxix.  248.) 
Crun-cotton,  kept  in  a  glass-stoppered  bottle,  since  1847,  had 
been  decomposed,  according  to  A.  W.  llofmann,  into  gum  and 
oxalic  acid — (Ann.  d.  Ch.  and  Ph.  xxxix.  282.) 
The  separation  of  Qadmium  from  Qopper  may,  according  to 
A.  W.  Hofmann,  be  effected  by  treating  their  sulphides  with 
boiling  dilute  sulphuric  acid,  (1  p.  acid,  5  p.  water,)  which 
readily  dissolves  the  sulphide  of  cadmium,  without  acting  on  the 
copper  sulphide. — (Ann.  d.  Ch.  and  Ph.  xxxix.  286.) 
Reactions  of  Cholesterine,  by  Hugo  Schiff. — Cholesterine  and 
nitric  acid,  evaporated  to  dryness  at  a  moderate  heat,  yield  a 
yellow  residue,  turning  deep  red  with  ammonia  ;  the  color  is  not 
altered  by  fixed  alkalies, — difference  from  the  similar  reaction 
of  uric  acid.  Cholesterine  evaporated  with  muriatic  or  sulphuric 
acid,  containing  sesquichloride  of  iron,  leaves  a  residue  of  a 
beautiful  violet  color.    Auric  and  platinic  chlorides  may  be 
