EXPLANATION OF PLATES. 



PLATE I. 



FIG. HO. 



1. Hair of Virginia Stock 25 



2. Deutzia 26 



3. Viburnum opulus ... 24 



4. Peltate Hair of Chrysanthe- 



mum 23 



5. Hair of Stinking Hellebore... 33 

 (>. Arabia sinensis 31 



7. Anther of Verbascum 34 



8. Scrophularia nodosa 36 



9. Nipnobolus 32 



10. Pappus of Coltsfoot 41 



11. Scale of Hippophae rhamnoi- 



des 44 



12. Spiral fibre of Cow Parsnip... 50 



13. Hair of Geum urbanum 35 



14. Scale of "Rusty-back Fern" 42 



15. Nothochlcenalxeis... 43 

 Ifi. Hair of Hollyhock 27 



17. Form of stomate 2 



18. Compound spiral fibre 54 



19. Hair of Leontodon hispidvs . . . 22 



20. Scale of Mayweed (Anthemis 



cotula) 45 



21. Hair of Gourd (Cucurbita 



maxima) 37 



22. Hair of Shepherd's-purse 21 



2.'5. Lupuline gland of Hop 47 



24. Hair of Ivy 28 



25. Anther of Heath (Erica te- 



IralLr) 63 



20. Anther of Whortleberry 69 



27. Anther of Strawberry-tree ... 71 



28. Hair of Mullein 30 



28*. Anther of Blushwort 67 



FIG. KO. 



29. Fibre of Flax 63 



30. Stigma of Anthemis arvensis 73 



31. Goafs-beard 74 



32. Mayweed 75 



33. Cuticle of Lesser Duckweed. . . 4 



34. Leek 1 



35. Stinking Hellebore 8 



36. Water Crowfoot ... 7 



37. Cells of Iris 6 



38. Fibrous cell of Mezereon 66 



39. Spiral tissue of Gourd 53 



40. Discs of Pine-wood 60 



41. Cells of Quillwort 48 



42. Cells of Bog-Moss 14 



43. Cells of curved-leaved Scale- 



Moss 18 



44. Punctate vessel of Poppy 5S 



45. Mezereon. 57 



46. Balsam ... 59 



47. Cuticle of Mistletoe 5 



48. Spiral of Horsetail 49 



49. Cells of Scale-Moss (Gymno- 



mitrium) 15 



50. Cells of Scale-Moss (Plagio- 



chila) 16 



51. Starch of Oat 82 



52. Potato 86 



53. Bean 80 



54. Otchis(O.bifolia)... 88 



55. Lily 90 



56. Hyacinth 91 



57. Horse Chestnut 93 



58. Acorn 94 



59. Ginger 95 



PLATE II. 



1. Pollen of Sherardia arvensis 101 



2. ., Nasturtium 102 



3. Yellow Fumitory... 103 



4. St. John's Wort ... 104 



5. Musk-plant 106 



6. Sowthistle 107 



7. Rush 108 



8. Linseed or Flax 109 



9. Willow Herb 110 



10. ,. Crowfoot (Ranun- 

 culus acris) Ill 



11. Pollen of Scorzonera 112 



12. Narrow-leaved Plan- 

 tain 114 



13. "PoUenotZanriaMexiccHia... 116 



14. Cedar of Lebanon... 117 



15. Dock 118 



16. Primrose 119 



17. Seed of Wahlenbergia (E. 



Marks) 13* 



18. Seed of Plantagopsyllium... 138 



19. Eccremocarpus 127 



20. Poppy 125 



21. Snapdragon 142 



22. Coreopsis tinctoria 132 



23. China Grass Plant... 141 

 21. Lepigonum mari- 



num .... .... 137 



