456  Gleanings  from  the  German  Journals.  {^"^'sipt.^ilS^^™' 
creasote,  2*0 ;  chloroform,  3'0.  Due  to  the  chemical  reaction  of  the 
first  two  articles  which  generates  such  heat  that  the  chloroform  boils. 
Proper  procedure :  mix  the  acid  and  creasote  and  allow  to  cool,  then 
add  the  chloroform. — {Arch,  de  Pharm.)  Pharm.  Ztg.,  1888,  p.  442. 
Liquor  Ferri  Albuminati. — 100  gm.  fresh  albumen  are  mixed  with 
200  gm.  distilled  water,  strained  and  the  albumen  completely  precipi- 
tated by  addition  of  dialyzed  iron,  the  mixture  being  constantly 
stirred.  The  thick  red-brown  mixture  is  passed  through  a  linen  strainer 
until  the  liquid  runs  clear,  after  which  it  is  washed  with  distilled  water 
until  the  washings  show  no  reaction  with  silver  nitrate.  The  strainer, 
with  precipitate,  is  placed  in  a  tared  porcelain  capsule  with  some 
water,  and  solution  of  soda  added  until  the  precipitate  dissolves,  (best 
ascertained  by  removing  a  small  quantity  in  a  test  tube  and  noting  the 
transparency),  the  strainer  is  then  removed  and  distilled  water  added 
to  make  700  gm.,  to  which  solution  is  added  100  gm.  glycerin,  200 
gm.  alcohol  and  any  aromatic  as  flavor. 
This  solution  contains  10  per  cent,  of  ferric  albuminate  (=  0*65 
per  cent,  ferric  oxide),  is  of  alkaline  reaction,  permanent,  easily  mis- 
cible  with  fresh  and  boiled  milk,  and  is  not  itself  changed  on  boiling. 
Dose :  a  teaspoonful  two  or  three  times  a  day,  one-half  hour  before 
meals. — Kohler,  Schw.  Wochenschr.  f.  Pharm.,  1888,  p.  219. 
Tests  for  Carbohydrates. — Undoubtedly  the  furfurol  reactions  fur- 
nish the  most  delicate  tests  for  the  carbohydrates.  H.  Schiff  uses  a 
test  paper  made  by  immersing  paper  in  a  mixture  of  equal  volumes 
of  xylidin  and  glacial  acetic  acid  diluted  with  alcohol  and  drying. 
A  small  quantity  of  the  substance  to  be  tested  is  heated  with  a  slight 
excess  of  concentrated  sulphuric  acid  and  the,  test  paper  held  in  the 
evolved  vapors,  a  beautiful  red  color  is  produced  owing  to  the  forma- 
tion of  the  furoxylidin.  It  will  detect  as  little  as  0*00007  gm.  glucose 
in  an  aqueous  solution.  The  author  uses  a  furfurol  reaction,  even 
more  delicate  than  the  above,  detecting  0*000028  gm.  glucose  in  solu- 
tion. One  drop  of  a  dilute  solution  to  be  tested  is  mixed  with  two 
drops  of  a  15  per  cent,  alcoholic  solution  of  a-naphthol  in  a  test  tube  and 
J  cc.  concentrated  sulphuric  acid  is  carefully  poured  in  to  form  a 
distin(3t  layer.  If  at  the  line  of  contact  a  violet  color  above  a  green 
layer  is  produced,  carbohydrates  are  present.  Urine  is  diluted  with 
9  volumes  of  water  and  one  drop  proceeded  with  as  above.  If  the 
violet  color  is  not  produced,  the  urine  is  considered  normal ;  if  the 
color  is  produced,  the  urine  may  be  considered  abnormal  because  it 
