INDEX TO MAPR.

1. Key Map to North Island. 2. Key Map to South Island. 3. Wairua,River : Map showing Drainage-area. 4. Wairua River : Map showing Sites for Power-stations, &c. 5. Kaituna River (Rotoiti, Rotorua). 6. Waikato River, Lake Rotoaira : Drainage-area Map. 7. Waikato River, from Taupo to Aratiatia Rapids. 8. Lakes Waikaremoana and Waikareiti: Drainage-ar.ea Map. 9. Lake Waikaremoana : Maps showing Sites for Power-stations. 10. Mangawhero River. 11. Rangitikei River. 12. Waihi River. 13. Makuri River. 14. Waiohine and Tauherenikau Rivers. 15. Otaki River. 16. Hutt, Akatarawa, and Whakataki Rivers. 17. Summit: Diagram showing Rainfall at. 18. Wairau, Awatere, and Clarence Rivers : Longitudinal Sections of. 19. Waihopai and Clarence Rivers. 20. Rotoiti and Rotoroa Lakes. 21. Buller River : Longitudinal Section of. 22. Clarence and Waiau-ua Rivers. 23. Otira and Rolleston Rivers. 24. Whitcombe River. 25. Kakapotahi, Wanganui, and Wataroa Rivers. 26. Waimakariri and Otira Rivers. 27. Lake Coleridge : Diagram showing variation ci Lake-level. 28. Lake Coleridge : Map showing various Proposals. 29. Kanieri Lake and Rakaia River. 30. Rangitata and Opihi Rivers. 31. Tekapo and Ohau Lakes ; Opihi, Opuha, Tengawai, and Ahuriri Rivers. 32. Lake Tekapo : Diagram showing Sections of various Schemes. 33. Waitaki and Ahuriri Rivers. 34. Manuherikia, Taieri, Earnscleugh, Teviot, Talla, Beaumont Rivers, and Deep Stream. 35. Deep Stream : Longitudinal Section of. 36. Hawea and Wanaka Lakes. 37. Wakatipu : Diagram showing Variation of Lake-level. 38. Shotover River. 39. Lakes Hall, Cecil, and Hilda. 40. Lake Hall, Waiau River, Lakes Monowai, Hauroko, and Poteriteri,