INDEX. V 



Sediment Discharge 233 



Seepage 236 



Theory of the Origin of Forest Trees 25 



Torrents — 



Their Sources 78 



Their Evils and Dangers 79 



Effects Seen Along the Sierra Madre 81 



How Dealt With 93 



Trees of the Forest 131 



Works on the Subject 131 



Underground Waters 218 



Their Channels 222 



Their Origin 219 



Water- 

 Experiments at Kinneloa 80 



