VITALITY 



487 



'J Hi 



%t 





Fig 203 —Para7necium caudatum, merotomy. 1, 2. and,.3, different experiments 

 the straight Hne indicating the plane of cutting; 3, the history of a monster; an 

 original cell 3o, was cut as indicated; the posterior fragment {h) divided (c) into (d 

 and (e), the latter formed a monster (3, /, to o); enucleated individuals {h. k and 7i) 

 occasionally separated from the parent mass. (After Calkins.) 



