298 
Anemone  Ludoviciana. 
f  Am.  Jour.  Phaxw. 
t     June  1,  1873. 
Samples. 
+AgO,  N05 
+  HO,  S03 
-f  KO,  Mn2  O7 
+KI-4-  starch 
Merck  s  1. 
More  cloudy  than  3 
Acid  colorless 
Fades  instantly 
Faint  blue 
2. 
«  II. 
Faint  cloud. 
'J 
Retains  color. 
No  reaction 
Schering's  I. 
More  cloudy  than  4 
4. 
"  IT. 
Faint  cloud. 
Gehe  &  Co,s. 
Acid  consider- 
ably colored 
« 
6. 
Saame  &  Co.'s 
Acid  slightly 
colored 
?. 
Marquart's. 
8. 
Unknown  I. 
Heavy  cloud. 
fades  quickly 
Blue. 
9. 
II. 
White  precipitate 
Acid  very  dark 
colored 
It  would  not  be  surprising  if  some  of  the  chloralhydrate,  which  Dr. 
Hager  has  examined,  were  to  be  shipped  to  this  country.  It  be- 
hooves us,  therefore,  to  be  on  our  guard. 
New  York,  Jane  15,  1873. 
ANEMONE  LUDOVICIANA. 
By  Frank  E.  Miller. 
Extract  from  an  Inaugural  Essay. 
The  above  plant  was  made  the  subject  of  the  thesis  of  A.  W.  Mil- 
ler, a  .graduate  of  the  class  of  1861 — 62,  who,  on  account  of  the 
small  quantity  obtained,  found  only  slight  traces  of  the  active  prin- 
ciple. 
About  ten  pounds  of  the  leaves  were  obtained  from  St.  Paul,  Min- 
nesota, in  the  neighborhood  of  which  the  plant  grows  abundantly. 
Of  this  lot  there  were  only  five  pounds  of  fresh  leaves,  the  other  five 
pounds  being  of  the  previous  year's  gathering.  The  two  lots  were 
mixed  togethei\two  pounds  were  placed  in  a  steam  still  with  suffi- 
cient water  to  cover  them,  and  one  quart  of  this  distilled  off.  This 
was  allowed  to  stand  for  a  short  time,  and  was  then  shaken  up  with 
about  one-half  fluid-ounce  of  chloroform,  which  was  separated  after 
remaining  in  the  distillate  for  several  hours,  and  allowed  to  evapor- 
ate in  a  current  of  dry  .air.  A  number  of  feathery  crystals  were  soon, 
formed,  which  were  of  a  white  color.  The  vessel  in  which  they  were 
crystallized  had  been  closed  by  parchment  paper,  but  this  did  not 
prevent  them  from  becoming  discolored  after  a  few  days,  and  chang- 
ing the  color  of  blue  litmus  to  red,  which  action  was  not  found  to  take 
place  while  they  were  white.  ^ 
