DESCRIPTION OF PLATB3. XI 



FIG. PAGE 



31. Pcdiastrum, a species of Desmid 57 



82, Scenedesmus, a species of Desmid 57 



33. Surirella nobilis, a species of Diatom 59 



84. Pinnularia viridis, a species of Diatom 59 



85. o. Navicula, a species of Diatom undergoing sett- 



division 

 6. Front view of the same. 



36. Melosira varians, a species of Diatom ....,. 59 



37. Melosira nummuloides undergoing self-division .... 59 



38. Cosdnodiscus eccentricus, a species of Diatom ...... 58 



39. Paramecium Aurelia, an infusory animalcule 64 



40. Vorticella nebulifera, an infusory animalcule 63 



41. Rotifer vulgaris, a wheel animalcule 65 



42. Stomates on a portion of cuticle of hyacinth leaf .. 32 



43. Sinuous walled cells and stomates from under sur- 



face of leaf of water-cress 32 



44. Cuticle of wheat straw with stomates 33 



45. Cuticle from petal of geranium (Pelargonium). . . . 33 



46. Cuticle from leaf of a species of aloe 33 



47. Spiral vessel from leaf-stalk of garden rhubarb .... 35 



48. Ditto unrolled 35 



49. Annular vessel from wheat root 35 



50. Dichotomous spiral vessels 85 



51. Dotted duct from common radish 35 



52. Scalariform tissue from fern root 85 



53. Woody fibre from eider.., ...,,. 85 



