THE  AMERICAN 
JOURNAL  OF  PHAR 
AUGUST,  i8g9\U.    AUG    2  W 
NEWER  OBSERVATIONS  CONCERNING  THE  DETECTION 
OF  BLOOD  BY  MEANS  OF  THE  GUAIACUM 
In  a  longer  paper,1  "  On  the  Use  of  Guaiacum  Resin  as  a  Re- 
agent," I  have  been  trying,  among  other  points,  to  recapitulate,  as 
briefly  as  possible,  the  propositions  of  the  last  thirty  years  concern- 
ing the  detection  of  blood  with  guaiacum  resin,  and  with  the  so- 
called  "  Antozonides,"  viz.,  with  peroxide  of  hydrogen  or  the  analo- 
gous compound  contained  in  isolated  essential  oils  and  acting  like 
hydric  peroxide.  In  this  question  the  following  memoirs  are  to  be 
mentioned : 
(1)  7.  von  Deen,  "  Tinctura  Guajaci  u.  ein  Ozontiager  als  Reagens 
auf  sehr  kleine  Blutmengen  "  [Archiv.f.  d.  holl.  Beitr.  z.  Naturw.  u. 
Heilkunde.,  Utrecht,  1861-64,  III,  228  to  231). 
(2)  C.  F.  Schbnbein>  "  Ueber  das  Verhalten  des  Blutes  zum  Sauer- 
stoff"  (Erdmann's  your.  f.  pract.  Chem.t  89,  22,  "Sitzgsber.  d. 
Munchener  Akad.,  math.  phys.  Classe,"  1863,  II,  274). 
(3)  F.  L.  Hiinefeld,  "  Die  Blutproben  vor  Gericht,  etc.,"  Leipzig, 
1875. 
(4)  H.  Fahrnery  "  Ueber  den  Nachweis  von  Blut  mittelst  der 
Guajak-Probe,"  Wiirzburg,  1876,  Inaug.  Diss. 
(5)  Lastly,  a  short  paper  of  D.  Vitali,  which,  however,  I  was  not 
enabled  to  see  in  the  original. 
REACTION. 
By  Edw.  Schaer,  Strassburg. 
1  Forschungsberichte  ilber  Nahrungsmittel,  Hygiene,  Pharmakognosie  U, 
forens.  Chemie.    Herausg.  von  A.  Hilger,  Miinchen,  1896,  Heft  1. 
(361) 
