X THE MICROSCOPE, 



FIQ PAGE 



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



a. Portion more highly magnified. 



1 3 . Pandorina Morum, a plant. 60 



14. Volvox Gldbator, a plant 60 



15. Euylena viridis, a plant, showing various forms 



which it assumes 61 



1 & Amoeba, an infusory animalcule 6 



a, b, c, show the various forms which thk ani- 

 malcule assumes. 



1 7. Actinophrys Sol, the sun animalcule 62-69 



18. Difflugia, an infusory animalcule 63 



19. Arcelia, an infusory animalcule =. 63 



20. Lagena, a species of Foraminifer 69 



21. Polystomella crispa, a species of Foraminifer 69 



22. Globigerina, a species of Foraminifer 69 



23. Rosalina, from chalk, a Foraminifer 69 



24. Living Rosalina, a Foraminifer 69 



25. Texlilaria, a species of Foraminifer 69 



PLATE II. t face page 32. 



26. Ulva in different stages of development ...<..,,., (j] 



a. Cells in single series. 



6. Commencement of lateral extension. 



c. Portion expanded. 



27 Oosmanum, a species of Desrnid undergoing self- 

 division. 



28. Euastrum, a species cf Desmid e 57 



29. Ctosterium, a species of Desmid t. t 57 



a. Undergoing self-division. 



30. Damidium, a species of Desmid ..... 57 



