X THE MICROSCOPE. 



FJO, PAGE 



12. Filament of a species of OsciUatoria, a plant .... 60 



a. Portion more highly magnified. 



] 3. Pandorlna Morum, a plant 60 



14. Volvox Globator, a plant 60 



15. Englena viridis, a plant, showing various forms 



which it assumes 61 



18o Amoeba, an infusory animalcule 69 



a, b, c, show the various forms which thi-3 ani- 

 malcule assumes 



17. Actinoplirys Sol, the sun animalcule 62-60 



18. Difflugia, an infusory animalcule 63 



19. Arcella, an infusory animalcule , 63 



20. Lagena, a species of Foraminifer 69 



21. Polystomella crispa, a species of Foraminifer 69 



22. Gldbigerina, a species of Foraminifer 69 



23. Rosalina, from chalk, a Foraminifer 69 



24. Living Rosalina, a Foraminifer C9 



25. Texlilaria, a species of Foraminifer QQ 



PLATE II. to face page 32. 



26. Uha in different stages of development , , ., gj 



a. Cells in single series. 



J. Commencement of lateral extension. 



c. Portion expanded. 



27 Cosrnarium, a species of Desmid undergoing self- 

 division. 



28. Eaaslrum, a species cf Desmid 57 



29. Closterium, a species of Desmid . t 57 



a. Undergoing self-division. 

 0. D&midium, a species of Desmid v ... 57 



