From - 



, and D 



t . A S ee tion a, - ou. ,. 

 elongated and transparent. C. 

 obliterated. 



From " The Essentials of Histology," by Sir Edward Sharpey 



Schafer (Longmans, Green & Co.). 



FOUR RED BLOOD CORPUSCLES AND A WHITE COR- 

 PUSCLE OF A FROG; THE LATTER HAS ENGULFED A 



~ WORN-OUT RED BLOOD CORPUSCLE 

 Magnified 600 diameters. 



