LIST OF ILLUSTRATIONS 



A Tropical Forest Frontispiece 



FIG. PAGE 



1. Darlingtotiia calif ornica ...... 3 



2. "Ltzyts oi Sarracenia purpurea 9 



3. V\\.chex oi Nepenthes distillatoria . . . . . 16 



4. Pitcher of Nepenthes bicalcarata showing downward- 



directed prickles 27 



5. Elk's-horn Fern {Platycerium grande) .... 99 



6. Patch of Lichen grown synthetically by Bonnier (from 



sowing of fungus spores on algae) under bacteriological 



precautions against entrance of foreign spores . . 117 



7. Assai Palm {Euterpe oleracid) 156 



8. Apparatus of Bonnier and Mangin, for analysis of gases 



given off by plants 166 



