DESTROYING THE ACTIVITY OF COBRA-POISON. 145 



4.15 P.M. Much the same. 



4.29 „ Much the same. 



4.35 „ Not quite so restless. 



4.45 „ Active ; runs about. 



4.45 „ Eestless ; not worse. 



5 „ Seems pretty well now. 



Died about 7 o'clock. 



Liquor potassa3 impairs the activity of the poison, but does 

 not destroy it, as will be seen from Experiment XIT, in which 

 the dose of the poison, which had usually proved fatal consider- 

 ably within an hour, did not cause death until 8 hours had 

 elapsed. 



Experiment XII. 



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



5 milligrammes of cobra-poison, dissolved in 1 c.c. water 

 mixed with 1 c.c. of liquor potassse, injected into hip at 3.52 P.M. 



3.53 P.M. Twitching. 



4.0 „ Leg paralysed. 



4.20 „ It seems much the same. 



4.35 „ Appears much the same. 



4.55 „ Appears much the same. 



5,35 „ Much the same. 



At 11.30 it was lying witli left hind leg paralysed, could walk 

 when irritated, mouth opened, head twitching back frequently. 



11.45 P.M. its respiration ceased, but when the skin of the 

 belly was pinched the animal took a breath and respiration 

 continued for about a minute afterwards. The heart continued 

 to beat until 11.50, 



Liquor ferri perchloridi fortior (B.P.) has much less action 

 upon 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 milligrammes cobra-poison, dissolved in 1 c.c. water mixed 

 with 1 c.c. of liquor fern perchloridi fortior (B.P.), injected into 

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



(95) L 



