LIST OF FIGURES 



rl . PAGE 



1. CHLAMYDOMONAS SP 16 



2. APIOCYSTIS BRAUNIANA 34 



3. ULVA LACTUCA, THE SEA-LETTUCE ... 36 



4. PRASIOLA STIPITATA 38 



5. HYDRURUS FCETIDTJS . '., . . . .41 



6. CLADOPHORA SP 45 



7. CATTLERPA STAHLII 50 



8. HALIMEDA OPUNTIA 52 



9. SECTION OF A LEAF 61 



10. ROOT IN TRANSVERSE SECTION .... 74 



11. DIAGRAMMATIC SECTION OF YOUNG WOODY STEM 76 



12. DIAGRAM TO SHOW THE BORDERED PITS AND HOW 



THE TRACHEIDS IN THE WOOD OF A PINE ARE 



CONNECTED WITH EACH OTHER ... 78 

 13A. DIAGRAM OF TRANSVERSE SECTION OF PART OF A 



YOUNG STEM OF SUNFLOWER .... 92 

 13B. DIAGRAM OF TRANSVERSE SECTION OF PART OF 



AN OLD STEM OF SUNFLOWER .... 93 



14. INDIAN CORN 105 



15. BAUHINIA ANGUINA . . . . . .114 



16. AN OLD BAUHINIA STEM 116 



17. STEM OF WATER MILFOIL (MYRIOPHYLLUM) IN 



TRANSVERSE SECTION 119 



18. TAENIOPHYLLUM TORRICELLENSE .... 141 



19. TRANSVERSE SECTION OF AN ORCHID (DENDROBIUM) 153 



20. TILLANDSIA USNEOIDES 156 



21. NEOTTIA NIDUS-AVIS, A SAPROPHYTIC ORCHID . 191 



22. ROOT TUBERCLES ON THE ROOTS OF THE KIDNEY- 



BEAN PLANT 195 



23A. PELTIGERA CANINA, A LICHEN .... 201 

 23B. TRANSVERSE SECTION THROUGH THE THALLUS OR 



FROND OF A LICHEN (PELTIGERA CANINA) . 202 



24. CHLAMYDOMONAS MEDIA 215 



25. FERTILISATION OF HALIDRYS SILIQUOSA . . 223 



26. DIAGRAM TO EXPLAIN THE COURSE OF AN ORDI- 



NARY NUCLEAR DIVISION AND THE RELATION 



TO IT OF THE MEIOTIC DIVISIONS . . . 229 



27. PROTHALLUS OF FERN 238 



28. LONGITUDINAL SECTION THROUGH THE PISTIL OF 



BUCKWHEAT 243 



viii 



