292  Pharmacology  of  Cotton  Root  Bark.    {^""^  M''ay^Y92'o: 
Table  6 
Blood  Pressure  Records  of  Thirteen  Samples  of 
Cotton  Root  Bark  on  Dogs 
Dose       Pressure    Pressure  at  Periods  After  Injection 
Drug  per  Kg.      at  Start      1-3'     5'     10'     15'    20'    25'  20' 
(Kymogram  736.   Dog  Wt.  12  Kg.   Morphine  S.-Hyoscine  HBr.  anaesthesia.) 
Cotton  R.  No.  1       .1   c.c.         120         124    118   clot  104 
.2  c.c.         100         116    107    114  114 
F.  E.  Ergot  .05  c.c.         115         153    131  133  
(Kymogram  772.   Dog  Wt.  10.5  Kg.   Morphine  S.-Hyoscine  Hbr.) 
Cotton  R.  No.  1       .05  c.c.         135         138    135    132  130 
.1   c.c.         130         142    clot    130    134  134 
 .2   c.c.         127         145    123  126  
(Kymogram  773.   Dog  Wt.  8.3  Kg.   Morphine  S.-Hyoscine  HBr.) 
CottonR.  No.  1       .2   c.c.         117         133    117  114 
F.  E.  Ergot  1.   c.c.         114  133  
(Kymogram  741.   Dog  Wt.  8.8  Kg.   Morphine  S.-Hyoscine  Hbr.) 
CottonR.  No.  2        1   c.c.         137         147    142    145    152  157 
.2   c.c.         157         168    153    153    clot  143 
F.  E.  Ergot  .05  c.c.         143         158    179    164  162  
(Kmogram  778.  Dog  Wt.  11.6  Kg.  Morphine  S.Hyoscine  HBr.) 
CottonR.  No.  2  .2  c.c.  127  137  130  126  124 
F.  E.  Ergot  .05  c.c.         124         140    140  140 
 .05  c.c.         140         155    148  154  
(Kymogram  778-A.   Dog  Wt.  11.7  Kg.   Morphine  S-.Hyoscine  HBr.) 
CottonR.  No.  3       .1   c.c.         105         117    108    108    104  103 
.2   c.c.         103         122    106    clot    127  119 
F.  E.  Ergot  .05  c.c.         122         149    134  129  
(Kymogram  743.   Dog  Wt.  8  Kg.   Morphine  S.-Hyoscine  HBr.) 
CottonR.  No.  3       .2   c.c.         126         135    118    118    119  113 
.3   c.c.         113         120    105    108    109  112 
F.  E.  Ergot  .05  c.c.         113         134    129    131    137    133  133 
 .1   c.c.         133         160  144  
(Kymogram  779.   Dog  Wt.  19.3  Kg.   Morphine  S.-Hyoscine  HBr.) 
CottonR.  No.  3       .1   c.c.         138         152    138    140  140  
(Kymogram  749.   Dog  Wt.  10  Kg.   Morphine  S.-Hyoscine  HBr.) 
CottonR.  No.  4       .1   c.c.         113         128    121    125    124    126  124 
 .2   c.c.         124         146    123    131  133  
(Kymogram  750.   Dog  Wt.  9.4  Kg.   Morphine  S.-Hyoscine  HBr.) 
CottonR.  No.  5       .1   c.c.         125         144    135    132    130    130  130 
.2   c.c.         130         148    143    136    133  134 
F.  E.  Ergot  .05  c.c.         141         198    195    166    166    150  153 
(Kymogram  751.   Dog  Wt.  5.9  Kg.   Morphine  S.-Hyoscine  HBr.) 
CottonR.  No.  6       .1  c.c.  149         152    144    150    155    154  154 
.2   c.c.         154         176    154    158    clot  141 
F.  E.  Ergot  .05  c.c.         130         176    151    154    150    141  136 
(Kymogram  753.   Dog  Wt.  8.8  Kg.   Morphine  S.-Hyoscine  HBr.) 
CottonR.  No.  7       .1   c.c.         142         148    146    154    155  155 
.2   c.c.         158         164    161    157    152    147  144 
F.  E.  Ergot  .05  c.c.         145         168    169    160    158  157  
(Kymogram  756.   Dog  Wt.  13.6  Kg.   Morphine  S.-Hyoscine  HBr.) 
CottonR.  No.  8       .1    c.c.         121         137    125    122    118    120  122 
.2   c.c.         139         153    136    138    135    132  131 
F.  E.  Ergot  .05  c.c.         131         164    188    187    172    166  155 
(Kymogram  755.   Dog  Wt.  14  Kg.   Morphine  S.-Hyoscine  HBr.) 
CottonR.  No.  9       .1  c.c.         124         139    135    136    143    152  153 
.2   c.c.         150         170    150    140    142    139  138 
F.  E.  Ergot  .05  c.c.         130         157    137    130    129    130  132 
