Fig. 19. Very small virus from a cytoplasmic polyhedrosis 

 of 8. ligustri. Note the formation of a micro-crystal. 

 (Magnification: x 40,000.) 



Fig. 20. Virus from a cytoplasmic polyhedrosis of 

 Antheraea mylitta. Note the regular packing of the virus 

 particles and their polyhedral outline. (Magnification: 

 30,000.) 



Fig. 21. The same virus as in Fig. 20 at high magnification 

 to show the six-sided contour. (Magnification: X 60,000.) 



