«fi THE POISOXOUS SNAKES OP INDIA. 



(//) A depressor that paralyses the vasomotor centre. 

 (Rogers.) 



(c) A depressor that paralyses centres in the bulb. 



(A. J. Wall.) 



(d) A depressor that pai'alyses the ends of the phrenic 



nerves; (Rogers.) 



(e) A toxin destructive to nerve cells generally in brain 



and cord. (Lamb and Hunter.) 



(2) Toxins affecting the constitution of the blood. 



(a) A fibrin ferment that clots blood. (Lamb.) 



(fo) An antifibrin ferment reducing the clotting power ot 

 blood. (Lamb.) 



(c) " Hasmolysin." A substance destructive to red blood 

 cells. (Rogers.) 



Analysis of the action of Fasciatus Toxins. 



O) («) The " neurotoxin " paralysing the respiratory centre is 

 the predominant agent in causing earlj death. It is 

 assisted by 1 (d) and slightly by 2 (b) in bringing 

 about asphyxia. 



(/>) The toxin paralysing the vasomotor centre, reduces 

 blood pressure, and so weakens the heart. When (1) 

 (a) fails to cause death this toxin also may fail to 

 bring about a fatal issue which unhappy result falls to 

 the lot of 1 (e). When breathing ceases, from the 

 effects of 1 (a) if artificial respiration is carried out, 

 life is but slightly prolonged, and death is then due to 

 cardiac failure. 



^c) The toxin operating on the centres in the bulb, by 

 its action imitates the condition known as bulbar palsy 

 where lips, tongue, throat, and voice are paralysed. 



{cl) Assists 1 (a) in producing asphyxia. 



^«) Produces a general muscular weakness, and atrophy such 

 as is not seen in the toxaemia of any other Indian 

 snake and is the direct cause of death from exhaustion 

 when 1 (a) and 1 ('') fail to achieve dissolution. 



