ILLUSTKATIONS 



F'G. PAGE 



1. Geranium sylvaticum (after Bentliam) . . 1 



2. Lamium amplexicaule : cleistogamous flower 8 



3. Section of do. . 8 



4. Shoot of Eose 12 



5. Whorl of Bramble leaves . . . 13 



6. Longitudinal section through the growing point of a winter 



bud of Abies pectinata (after Sachs) 2 1 



7. Twig of Beech . . 22 



8. Twig of Chestnut 22 



9. Twig of Norway Maple . 22 



10. Shoot of Black Poplar . 23 



11. Transverse section of leaf of Empetrum (after Kerner) 28 



12. Leaf of Clover {TrifoUum repens) : position by day 30 



13. Do. do. position by night 30 



14. Group of Dead and Stinging Nettles 30 



15. Twig of Lime . . 31 



16. Young shoot of Hornbeam . . . . .32 



17. Longitudinal section through the junction of stem and leaf of 



Horse Chestnut in autumn (after Sachs) . . 33 



18. Seedling of Glaucium corniculatum . . 34 



19. Frond strengthened by rolling (after Spencer) . 35 



20. Portion of a grass stem ; showing internodes surrounded by 



leaf-sheaths (after Spencer) . .35 



21. Frond strengthened by mid-rib (after Spencer) . 36 



22. Relation of stem and leaf in Dicotyledons (after Spencer) 36 



23. Single girder . . 38 



24. Double girder . • . 38 



25. Multiple girder . . .38 



26. Section of a one-year-old shoot of Lime, showing woody bundles 



separated by Ijroad bands of soft (parenchymatous) tissue 

 (after ICerner) . . .39 



