GLEANINGS  FROM  GERMAN  JOURNALS. 
415 
When  large  quantities  of  blood  were  repeatedly  taken  from 
dogs  at  intervals  of  from  two  to  eight  days,  each  successive  por- 
tion of  blood  contained  more  fibrin.  (Verb.  d.  Kaiserl.  Akad. 
d.  Wiss.,  1867,  xviii.,  143—145. 
Poisoning  by  Decoction  of  Poppy  Capsules.  Dr.  F.  L. 
Winckler  relates  a  fatal  case  of  poisoning  of  a  babe,  from  whose 
stomach  he  succeeded  in  isolating  a  little  morphia,  but  was 
unable  to  discover  meconic  acid.  Prof.  L.  A.  Buchnor  mentions 
a  similar  case  of  poisoning,  in  which  he  could  not  find  any  mor- 
phia in  the  stomach.  In  the  case  of  a  boy  of  five  years,  who 
was  killed  by  three  doses  of  acetate  of  morphia,  of  two  grains 
each,  no  morphia  could  be  discovered  in  the  stomach.  (Buchner's 
N.  Repert,  1867,  35—43. 
Liquid  Soap.  D.  Aug.  Vogel,  Jr.,  recommends  for  this  pur- 
pose Heeren's  directions  to  saponify  a  mixture  of  100  grammes 
glycerin  and  32  grins,  olein  with  17  grins,  concentrated  potassa 
solution.  To  the  soap,  which  is  of  the  consistence  of  honey,  add 
3-5  grms.  carbonate  of  potassa,  dissolved  in  little  water,  allow 
to  rest  for  some  time,  and  decant.  This  soap  may  be  mixed 
with,  and  serve  as  a  vehicle  for  the  external  application  of  tan- 
nin, iodine,  bromine,  &c.    (Ibid,  65.) 
Titration  of  Tannin  by  Crlue.  A  suitable  solution  of  glue, 
which  shows  no  tendency  to  decompose,  is  made  by  dissolving 
16  grms.  purified  glue  in  16  CC.  water,  adding  1  grm.  muriatic 
acid  and  1*5  grm.  sulphate  of  zinc,  diluting  to  200  CC.  and 
decanting  ;  it  is  then  measured  so  that  100  CC.  are  equal  to 
,3  or  4  grms.  tannin.    (Ibid,  66.) 
Constituents  of  the  Baric  of  the  Apple-tree  Moot,  by  Rochleder. 
The  sugar  of  lead  precipitate  in  the  decoction  of  the  bark  is 
partly  soluble  in  acetic  acid.  If  the  insoluble  portion  is  treated 
with  IIS,  and  the  filtrate  evaporated,  in  vacuo,  to  a  syrupy  con- 
sistence, alcohol  leaves  pectin  behind,  and  its  solution,  after  dis- 
tilling in  vacuo,  and  evaporating  over  sulphuric  acid,  yields  a 
small  quantity  of  crystals  of  the  composition  Ci8H30O51,  probably 
4012H8O14 — 2IIO.  The  air-dry  substance  must  have  had  the 
composition  of  citric  acid;  it  lost,  on  drying,  6*74  per  cent, 
water.    (Calculation  6-72.) 
The  acetic  acid  solution  obtained  as  above  yields,  with  Gou- 
