84 LABORATORY STUDIES IN ZOOLOGY 



Regeneration. — Flatworms show remarkable powers of regen- 

 erating lost parts. In each section the instructor will cut a 

 specimen in two while it is gliding across the bottom of a watch 

 glass and place the two halves in a bottle of water to examine 

 later. Each student should make a rough sketch of this worm 

 showing the approximate location of the cut in order to aid his 

 memory when examining the specimen later for evidences of 

 regeneration. 



