xii ILLUSTRATIONS 



FIG. 



PAGE 



9. ' FATIGUE ' DEPRESSION OF RESPONSE IN PLANT . 132 



10. UPPER PART OF THE RESONANT RECORDER . . 140 



1 1 . GENERAL VIEW OF THE RESONANT RECORDER ATTACHED 



TO THE PLANT ....... 142 



12. RECORD FOR DETERMINATION OF THE LATENT PERIOD OF 



LEAF OF MIMOSA 143 



13. THE MIMOSA AND THE TELEGRAPH PLANT. . .145 



14. DEPRESSION OF EXCITABILITY UNDER CARBONIC ACID 



AND REVIVAL ON READMISSION OF FRESH AIR . 149 



15. DEPRESSING EFFECT OF A PASSING CLOUD . . 150 



1 6. ABOLITION OF PULSATION AT THE DEATH OF THE PLANT 151 



17. THE HIGH MAGNIFICATION CRESCOGRAPH . . 155 



19. THE BALANCED CRESCOGRAPH 174 



20. RECORD SHOWING THE EFFECT OF CARBONIC ACID GAS 



ON GROWTH 175 



21. RECORD OF RESPONSES OF PLANT TO WIRELESS STIMU- 



LATION ........ 179 



22. EFFECTS OF DIRECT AND INDIRECT STIMULUS . .185 



25. RECORDS OF THE DAILY MOVEMENT OF THE PALM TREE, 



OF TROPAEOLUM, AND OF THE PALM LEAF . . 201 



26. DIURNAL RECORD SHOWING VARIATION OF SENSIBILITY 



OF MIMOSA ........ 203 



