EUGLENA 47 



9. The nucleus is located near the middle of the body. In 

 living specimens absence of the chromatophores in this region 

 marks the location of the nucleus. For its shape and structure 

 see demonstration, 



10. Paramylum hoclies, a form of stored animal starch, are 

 readily seen in some species. Since they are not always present 

 and assume different shapes in various species, the instructor 

 will announce if special attention is to be directed to them. 



.11. Compare locomotion of Euglena with that of 

 Paramecium and Amoeba. 



12. With an ocular micrometer find length and width of a 

 Euglena. Record these measurements beside the drawing 

 called for in the next paragraph. 



13. Make a drawing, 120 mm. long, showing the parts you 

 have seen. 



14. Though the Euglena possesses a mouth and gullet no 

 one has ever seen it take solid food particles. In its metabolism 

 it is distinctly plant-like. Through the energy of sunlight the 

 chlorophyl bodies combine carbon-dioxide and water to form 

 starch which is used as food. 



15. Euglena reproduces by longitudinal fission which be- 

 gins at the anterior end. The old flagellum is retained by one- 

 half while the other half produces a new one. 



