130 



THE MICROSCOPE. 



PROTOZOA. 



The first division, or lowest forms of the animal kingdom, appear 

 as creatures of a low type of organisation, and have been considered to 

 hold a medium state between animals and vegetables. Almost all of 

 them live in water; and it would be a fruitless search to look for dis- 

 tinct internal organs, as the small bladder-looking spaces enclosed within 

 their substance, believed by Ehrenberg to be stomachs, and which 

 have been termed by Dujardin sarcode, present only the appearance 

 of a transparent gelatinous cell, with or without moving spaces in 



fig. 92. A drop of Water display 

 Larva of Dytiscus, Cup Moss, Spurge Laurel, &c. 



