69 



an accidental mutilation of the arm had also in this case been the disturbing cause, is 

 undoubted; but, instead of the single regeneration of the lost part, the reproduction has 

 taken place in a double form; so that from the wounded surface there have sprouted forth 

 2 separate nascent arms, which have been further developed each for itself. Monstrosities 

 analogous to these have already been observed in some exotic star-fishes, the Oreaster 

 gigas and Astropecten aurantiacus. 



