D 



FIG. 8. Typical Animal and Vegetable Cells. 



A 1 A 4 , living leucocyte (blood corpuscle) of a crayfish showing 

 amoeboid movements : A 5 , A 6 , the same, killed and stained, showing 

 the nucleus (mi). 



B 1 , leucocyte of the frog, nu the nucleus : B 2 , two leucocytes 

 beginning to conjugate : B 3 , the same after conjugation, a binucleate 

 plasmodium being formed : B 4 , a leucocyte undergoing binary fission : 

 B 5 , surface view and B 6 edge view of a red corpuscle of the same, 

 nu, the nucleus. 



c 1 , c 2 , leucocytes of the newt ; in c 1 particles of vermilion, repre- 

 sented by black dots, have been ingested. 



C 3 , surface view and c 4 edge view of a red corpuscle of man. 



D 1 , column or epithelium from intestine of frog : D 2 , a similar cell 



