472 



Dr. T. L, Brunton and Sir J. Fayrer [June 20, 



the cobra poison than one would have expected, as will be seen from 

 Experiment XIII, in which death occurred in an hour and a half. 



Experiment XIII. 



March 14th. Guinea-pig, weight 16 oz. 



5 mgms. cobra poison dissolved in 1 cub. centim. water mixed 

 with 1 cub. centim. of liquor ferri perchloridi fortior (B.P.) injected 

 into the left hip of the guinea-pig at 4.4 p.m. 



4.20 p.m. Dropped the hind leg> but otherwise seems active and well. 



4.35 ,, Very active, but leg drops. 



5.10 ,, Hind leg paralysed. 



5.15 ,, Tries to crawl, cannot, struggles, convulsed. 



5.16 Jerking convulsions. 



5.17 ,, Almost dead. 



5.18 „ Dead. 



Carbolic acid likewise delays the action of the poison, but to a very 

 much smaller extent than liquor potassee, as is proved by Experiment 

 XIV. 



Experiment XIV. 



March 14th. Carbolic acid, one- third of a cub. centim. mixed with 

 5 mgms. of cobra poison in 1 cub. centim. of water, injected into hip of 

 a guinea-pig weighing 14 oz., at 4.55 P.M. 



5.55 p.m. Much the same. 



7.50 ,, Very slight convulsions. 



7.55 Much the same. 



8.0 „ Dead. 



Experiment XV. 



March 7th. 3 mgms. cobra poison mixed with 1 grain of nitrate of 

 silver dissolved in 40 grains of water, injected into hip of black guinea- 

 pig, weighing 14 oz., at 3 p.m. 



4.10 P.M. Twitching ; crouching in corner, crying out slightly, as 

 guinea-pigs are wont to do when restless. 



4.15 p.m. Restless, crouched in corner of box, twitching of muscles, 

 cries as before. 



4.25 p.m. Restless, crying fretfully. 



Died in about one and a half hours afterwards, about two hours 

 after the injection of the poison. 



Experiment XVI. 



March 7th. 3 mgms. of cobra poison mixed with 10 grain measures 

 of a saturated solution of chloride of mercury (corrosive sublimate), 

 injected into hip of guinea-pig (black and white), weighing 14 oz,, 

 at 3.56 p.m. 



4.10 p.m. Twitching, uneasy, tremors. 



4.15 ,, Quiet, crouching in the corner. 



