STAR-FISH AND SEA-URCHINS. 323 
be distributed over the whole of the ventral or 
lower surface of the animal. For I must add that 
severed rays behave in all these respects like the 
entire organisms, although they are disconnected 
from the mouth and disc. 
As this chapter has already extended to so great 
a length, I omit from it any account of some further 
experiments which I tried concerning the effects of 
nerve-poisons upon the Echinodermata. A full - 
record of these experiments may be found in the 
publications of the Linnean Society. 
FINIS. 
