FULL-PAGE ILLUSTRATIONS 



PLATE PAOiE 



1. A GROVE OF LIVE OAKS NEAR SAVANNAH, GEORGIA . Frontispiece 



2. Carrying water over the Mississippi levee by siphon to 



irrigate rice fields 8 



3. Aerial roots of a Mexican strangling fig ... 73 



4. A forest of bamboo 99 



5. A group of conifers 108 



6. A WHITE OAK, showing THE GREAT SPREAD OF BRANCHES . 117 



7. a timber tree spoiled by standing too much alone . 125 



8. An American elm, illustrating deliquescent growth . 130 



9. Vegetation of a moist, shady ravine 151 



10. A MOSAIC OF moonseed leaves 179 



11. Hybrid between a red and a white carnation . . . 227 



12. Gooseberries, showing improvement by selection . . 251 



13. The effects of irrigation 272 



14. A xerophyte formation of yuccas and switch plants . 282 



15. A giant tulip tree of the South Atlantic forest region 298 



