Am.  Jour.  Pharm. 
Feb.,  1889. 
Soluble  Gum  of  Tragacanth. 
71 
SAMPLES. 
PER  CENT.  OF 
PER  CENT.  SOLUBLE 
IN 
Moist- 
ure. 
Ash. 
Ether. 
Absol. 
alcohol. 
95  p.  ct. 
alcohol. 
Water. 
A  
11-2/ 
1-37 
•81 
9670 
93-22 
68-20 
B  
12*50 
1-28 
•43 
97-65 
9350 
69-32 
C  
1079 
1-42 
•56 
98-00 
94-28 
67-45 
D  
13-45 
1-32 
•67 
92-56 
90-72 
70'90 
E  
1292 
1-20 
•85 
94-68 
92-16 
68-85 
F  
11-25 
1-25 
•74 
96-24 
92-50 
68-76 
G  
12-62 
1  34 
•63 
95-72 
91-60 
72*17 
H.  ., 
16-78 
2-80 
•25 
9900 
97-42 
55-72 
I 
17-92 
2-50 
•29 
98-80 
96-00 
58-16 
The  ether  soluble  portion  dissolved  readily  in  alcohol,  and  this  solu- 
tion gave,  with  ferric  chloride,  a  deep-green  color.  The  portions  in- 
soluble in  absolute  alcohol  yielded  from  65  to  92  per  cent,  to  water, 
except  for  H  and  I,  which  residues  were  completely  insoluble  in  wa- 
ter. Of  the  same  two  samples  the  residues  left  by  water  treatment 
yielded  to  alcohol  98  per  cent.,  while  the  corresponding  residues  of 
the  remaining  seven  samples  contained  between  77  and  90  per  cent, 
of  alcohol  soluble  matter. 
A  quantity  of  gelatinized  matter  from  old  tincture  of  kino  was 
procured  and  proved  to  be  insoluble  in  acids,  alkalies,  alcohol,  ether 
and  water ;  but  was  not  further  examined  since  the  kino  which  had 
yielded  it  could  not  be  obtained. 
Tincture  of  kino  was  made  from  some  of  the  above  samples  the 
menstruum  used  being  1,  the  officinal  one  ;  2,  alcohol  85,  glycerin  15; 
3,  dilute  alcohol ;  4,  water  75,  alcohol  25  ;  5,  absolute  alcohol,  and  6, 
95  per  cent,  alcohol.  The  best  results  were  obtained  with  menstruums 
4  and  5,  the  tinctures  with  5  being  practically  free  from  precipitates  ; 
those  with  4  containing  a  distinct  precipitate,  and  the  remainder  show- 
ing, after  a  month  or  two,  indications  of  gelatinizing.  Tincture  of  kino 
yields  with  lead  acetate  a  dark  bluish  precipitate ;  the  same  reagent 
gives  with  tincture  of  catechu  a  light  yellow,  and  with  tincture  of  kino 
containing  10  per  cent,  of  catechu,  a  dingy  gray  green  precipitate. 
Pills  of  Tliymol  are  conveniently  made  by  using  soap  as  an  excipient, 
and  are  prepared  by  Dr.  Frederic-Henry  (Jour,  de  Med.)  in  the  treatment  of 
various  intestinal  disorders.  The  thymol  is  given  in  doses  of  0*12  to  0*15  gm . 
every  six  hours. 
