HENRY FARNHAM PERKINS. 



there until ejected by the subsequent movement of the animal. 

 It was not possible to determine whether these particles furnished 

 any nutriment, but the long-continued activity of the degenerated 

 polyps seemed to indicate their ability to absorb some food. 



.- 

 : i 



' 



FIG. ;. 



As the plasmodium crept along over the bottom it left in its 

 wake a trail of particles which it had egested or which had 

 become detached from the substance of the protoplasm itself. 



' *" ' :*. 

 If 



':' '" 



'-" _-,.* 



FIG. 6. 



A form which was noticeable both for its remarkable appear- 

 ance and its frequent occurrence is represented by Fig. 7. This 

 was derived, in a comparatively short time, from such a form as 

 that of Fig. 6, a long filamentous process being sent upwards 

 into the water, free from the bottom. Along this process the 



