DESCKIPTION OF PLATF3. Xi 



FIG. PAGE 



31. Pediastrum, a species of Desmid 57 



32. Scenedesmus, a species of Desmid 57 



33. Surirella nobilis, a species of Diatom 59 



34. Pinnularia viridis, a species of Diatom 59 



35. a. Navicula, a species of Diatom undergoing seK- 



division 

 h. Front view of the same. 



36. Melosira varians, a species of Diatom 59 



37. 3felosira nummuloides undergo'mg seU-d'iv'ision .,., 59 



38. Cosdnodiscus eccentricus, a species of Diatom 58 



39. Paramecium Aurelia, an infusory animalcule 64 



40. Vorticella nebidifera, 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 35 



61. Dotted duct from common radish 35 



52. Scalariform tissue from fern root ,, 35 



53. Woody fibre from eidei' 35 



