48 STUDIES IN ANIMAL LIFE. 



Fig. 11. — VoLvox Globator, with eight volvoces 

 inclosed (magnified). 



with slow revolving motion, like planets revolving 

 tlirougL. space, except that their orbits are more ec- 

 centric. Each of these spheres is a Volvox glohator. 

 Under the microscope it looks like a crystalline 

 sphere, stiidded with bright green specks, from each 

 of which arise two cilia (hairs), serving as oars to 

 row the animal through the water. The specks are 

 united by a delicate net-work, which is not always 

 visible, however. Inside this sphere is a fluid, in 

 which several dark green smaller spheres are seen 

 revolving, as the parent sphere revolved in the wa- 

 ter. Press this Volvox gently under your com- 

 pressorium, or between the two pieces of glass, and 

 you will see these internal spheres, when duly mag- 

 nified, disclose themselves as identical with their 

 parent ; and inside them smaller Yolvoces are 

 seen. This is one of the many illustrations of life 

 within life, of which something was said in the last 

 chapter. 



