90 
EDITORIAL. 
dillera  to  the  cinchona  forests  near  Cocabambilla,  and  after  inspecting  the 
trees,  returned  to  Cusco.  M.  Delondre,  subsequently  at  Arequipa,  made  a 
new  arrangement  with  M.  Braillard,  that  also  fell  through,  which  induced 
him  to  re-embark  with  hh  apparatus  at  Valparaiso  for  Havre,  to  commence 
anew  the  manufacture  of  quinia,  after  his  chapter  of  misfortunes. 
The  third  part,  which  is  more  particularly  interesting  to  Pharmacologists, 
is  a  description  of  the  physical  properties  and  economical  chemistry  of  the 
principal  commercial  varieties  of  cinchona  bark,  with  some  hints  relative 
to  their  botanical  origin  and  commercial  history.  The  chief  value  of  the 
work  consists  in  the  accuracy  and  beauty  with  which  the  several  barks  have 
been  represented  by  colored  engravings  to  the  number  of  twenty- three, 
including  several  inferior  varieties  and  false  barks.  These  are  accompanied 
by  descriptions  of  the  barks  and  the  alkaloidal  value  of  each,  based,  in 
many  instances,  on  the  results  of  large  operations.  These  essays  are  the 
more  interesting,  as  they  chiefly  relate  to  the  Columbian  or  New  Grenada 
cinchonas,  and  exhibit  a  very  favorable  view  of  their  medicinal  value  as 
indicated  by  the  proportion  of  alkaloids.  We  have  condensed  them  in 
tabular  form,  for  the  benefit  of  our  readers  : 
Tabular  view  of  the  proportion  of  Alkaloids  in  the  Cinchona  Barks, 
according  to  the  results  of  M.  A.  Delondre. 
Sulph.  qui 
nia 
Sulph.  cinchon. 
Commercial  Varieties. 
Locality. 
yielded  by  1000 
yielded  by  100  0 
grains  of  b 
ark 
grains  of  bark . 
Flat  Calisaya  bark,  without  epidermis 
Bolivia 
30  to  32  grs. 
6  to   8  grs. 
Quilled  Calisaya  bark,  with  " 
Bolivia 
15  to  20 
it 
8  to  10 
tt 
Flat  Carabaya  bark,  without  " 
Southern  Peru 
15  to  18 
tt 
4  to  5 
a 
Rolled  Carabaya  bark,  with  <c 
it 
tt 
8  to  10 
(t 
5  to  6 
a 
Flat  red  Cuseo  bark,  without  " 
a 
a 
4 
it 
12 
tt 
Rolled  red  Cusco  bark,  with  " 
a 
a 
6  to  8 
a 
Flat  Huanaco  bark 
Central  Peru 
6 
it 
12 
tt 
Pale  yellow  Huanuco  bark,  without  " 
tt 
tt 
6 
tt 
10 
tt 
Rolled  Huanuco  bark,  with  (< 
tt 
et 
2 
it 
8  to  10 
tt 
Rolled  Jaen  bark,  with  •* 
NorthernPeru 
10 
tt 
4 
a 
Bright  red  bark 
Equador 
20  to  25 
tt 
10  to  12 
ti 
Pale  red  bark,  rolled 
ti 
15  to  18 
tt 
5  to  6 
tt 
Loxa  bark  (gris  fin  condaminea) 
tt 
8 
it 
6 
it 
Loxa  bark  (gris  fin  negrilla) 
tt 
2 
a 
10 
a 
Yellow  bark  of  Guayaquil,  without  " 
u 
3  to  4 
a 
30 
tt 
New  Grenada 
18 
it 
4  to  5 
tt 
Rolled  Orange  yellow  bark,  or  Ca-  f 
lisaya  of  Bogota  I 
tt 
30  to  32 
tt 
3  to  4 
a 
a 
18 
a 
4  to  3 
tt 
Pitayo  bark 
t: 
20  to  25 
tc 
10  to  12 
<< 
Ligneous  Carthagena  bark 
a 
20 
tt 
Orange  yellow  bark  of  Mutis,  without 
epidermis 
a 
15  to  18 
tt 
8  to  10 
it 
Red  bark  of  Mutis,  without  epidermis 
tt 
12  to  14 
tt 
6  to  7 
tt 
Yellow  bark  of  Mutis 
a 
12  to  14 
tt 
6  to  7 
tt 
Rose  colored  bark 
it 
18 
tt 
4 
a 
Maracaybo  bark 
tt 
3  to  4 
tt 
10 
tt 
Inferior  yellow  Cusco  bark 
(Peru) 
.50 
ti 
Inferior  brown  Cusco  bark 
a 
.40 
tt 
Inferior  pale  red  bark 
New  Grenada 
.18 
a 
.02 
ti 
White  bark 
tt 
.06 
tt 
.12 
a 
