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. 



