Am.  Tour.  Pharm. 
Sept.,  1893. 
Juglans  Cinerea. 
427 
In  the  first  analysis,  a  quantity  of  the  root  bark,  crop  of  1892,  was 
obtained  from  a  reliable  commercial  source,  and  the  work  carried 
out  in  November  and  December  of  that  year.  In  the  second 
analysis,  the  bark  from  the  branches  of  the  tree  was  employed.  This 
bark  was  collected  for  the  author  early  in  January  of  this  year,  in 
Otsego  County,  New  York  State.  A  tree  about  twenty  years  old 
was  selected,  and  the  bark  taken  from  branches  4  to  5  inches  in 
diameter,  without  removing  the  corky  portion 
Root  Bark.  Per  Cent.  Trunk  Bark.       Per  Cent. 
Fixed  oil,   4 '94       Fixed  oil,   5'98 
Fixed  oil  and  color-               Fixed  oil  and  color- 
less crystalline  re- 
sin,   2*31  sin,   2'59 
Juglandic  acid,  ex- 
tractive matter,  etc.,  6*94 
Solvent  Used. 
Petroleum  ether, 
Stronger  ether, 
Absolute  alcohol, 
Distilled  water, 
Dilute  solution  of 
sodium  hydrate, 
Dilute  hydrochlo- 
ric acid,  .... 
Chlorine  water, 
Dextrin,   0-52 
Mucilage,   2*25 
Glucose,   3*05 
J  Saccharose,  ....  1-34 
L  Extractive,  ....  2*49 
f  Pectin  and  albumin- 
j  ous  matter,  ...  1  "68 
]  Coloring  matter  and 
I     extractive,    ...  6 '86 
Pararabin  and  traces 
of  calcium  oxalate,  2^62 
f  Lignin,   9*22 
I  Cellulose,  44-26 
\  Moisture,   4*60 
j  Ash,   5*82 
i  Loss,   i'io 
less  crystalline  re- 
sin,   
Uncrystallizable  acid, 
crystalline  resin, 
etc. ,  
f  Dextrin,  
Mucilage,  .... 
7-42 
070 
070 
Glucose,   3*34 
Saccharose,  ....     2  "06 
Extractive,  ....  4*20 
f  Pectin  and  albumin- 
)      ous  matter,  ...     1 48 
j  Coloring  matter  and 
I     extractive,    ...  2*06 
Pararabin  and  cal- 
cium oxalate,  .  .  4*08 
6-96 
4379 
475 
5 '34 
4*55 
IOO'OO  IOO'OO 
The  fixed  oil  in  each  case  was  brown  in  color,  and  saponifiable 
hy  alkalies,  the  latter  turned  them  of  a  violet  color,  this  color  was 
much  brighter  with  the  oil  from  the  bark  of  the  root. 
Of  the  extractions  with  ether,  when  that  from  the  bark  of  the 
root  was  treated  with  water  the  latter  was  colored  a  bright  straw- 
yellow,  it  was  neutral  to  litmus  and  gave  a  bluish-brown  color  with 
solution  of  ferric  chloride.  This  water  solution  was  tested  for 
glucose  and  glucosides,  but  no  reactions  observed.  The  remainder 
of  the  ethereal  extract  consisted  in  part  of  a  brown  fixed  oil,  identical 
in  appearance  and  reactions  with  that  extracted  by  petroleum  ether, 
