Am'jja°nuri876.arm'}  Alkaloids  of  Yeratrum  Viride  and  Album. 
FIG.  4. 
JERVIA,  FROM   BLOOD   OF  CAT. 
75  DIAM. 
On  further  purifying  the  resin- 
ous matter  left  in  the  capsule,  it 
furnished,  under  the  action  of  con- 
centrated sulphuric  acid,  very  good 
evidence  of  the  presence  of  vera- 
tria. 
Exp.  2.  Dog. —  Between  two 
and  three  drachms  of  the  fluid  ex- 
tract were  administered  to  a  dog, 
weighing  about  thirty-five  pounds. 
The  animal  was  soon  seized  with 
violent  vomiting  and  retching,  suc- 
ceeded by  purging  and  discharge  of 
urine.  Two  hours  after  the  admin- 
istration, there  still  being  very  active  symptoms,  the  animal  was  killed 
by  a  blow  upon  the  head.  The  stomach  of  this  animal  was  not  exa- 
mined. 
The  Blood. — Three  ounces  of  blood  carefully  taken  from  the  femoral 
artery  of  this  animal,  were  acidulated  with  acetic  acid,  violently  agitated 
with  a  mixture  of  water  and  alcohol,  and  the  mixture  treated  in  the 
same  manner  as  the  blood  from  the  cat, — the  final  solution  being 
reduced  to  375  fluidgrains. 
This  solution,  after  addition  of  carbonate  sodium,  was  extracted 
with  200  fluidgrains  of  ether,  and  finally  washed  with  a  little  of  that 
liquid. 
Ten  fluidgrains  of  the  ether  first  employed,  when  allowed  to  evapo- 
rate, left  a  residue  containing  a  large  number  of  minute  crystals  of  jervia. 
On  evaporation  of  the  whole  of  the  ether  employed,  another  crop  of 
crystals  was  obtained,  and  the  margin  of  the  residue  was  of  a  resinous 
character. 
On  separating  the  different  portions  of  the  residue  by  acidulated 
water  and  treatment  in  the  manner  already  described,  perfectly  satis- 
factory evidence  of  the  presence  of  both  alkaloids  was  obtained. 
The  quantity  of  veratria  recovered  in  this  instance  seemed  to  be 
greater  than  in  the  case  of  the  cat,  whilst  that  of  the  jervia  seemed  to 
be  less. 
Of  all  the  alkaloids,  there  is  none,  according  to  our  experience,  so 
readily  recovered  in  its  crystalline  state  from  the  blood,  when  carried 
