\ PROTOPLASM MO VEMKNTS. , 7 



(Fig. 5). The streams are made cleai-ly risible by the motion 

 of the granules which are carried along by the moving hya- 

 line portion of the protoplasm. After running in one 



\ .t^t"^. 



Fig. 5. — A pmall maps of the naked protoplasm {Plasmodium) of Didymium aer 

 pula ; the arrows show the direction of the currents, x 30. — After Hofineister, 



direction for some minntcs (about five) the current stops, 

 and then it usually sets in an exactly opposite direction for 

 aboTit the same length of time, and carries back the previ- 

 ously moved protoplasm. 



