TUTTLE ENGINEERING NOTES ON HAWAII. 143 



in part, furnished to the Sub-Committee of the Senate Committee on 

 Pacific Islands and Porto Bico, which visited the islands during Sep- 

 tember last, and in part have been taken from the report of Governor 

 Dole for the year ending June 30th, 1902. 



Tons of sugar per 

 acre bar vested. 



Average yield of unirrigated plantations, 1897-01, in- 

 clusive 3 .45 



Average yield of irrigated plantations, 1897-01, inclusive. 5.82 



Average yield of all plantations, 1897-01, inclusive 4.48 



Average yield of all Oahu plantations, 1901 8 . 44 



Average yield of Ewa plantation, Oahu, 1901 (highest 



noted) 10.78 



Average yield of Kohala plantation, Hawaii, 1901 (lowest 



noted) 2.39 



Average tons of cane per ton of sugar, Oahu plantations, 



in 1901.. 8. 62 tons 



Average cost of cultivation per ton of sugar, Ewa planta- 

 tion, for 1901 $24.28 



Average cost of cultivation per acre, Ewa plantation, for 



1901 265.01 



Average cost of irrigation per acre, Ewa plantation, for 



1901 35.72 



Average cost of irrigation per ton of sugar, Ewa planta- 

 tion, for 1901 3.30 



Average cost of production per ton, for Oahu plantation, 



for 1901 41.13 



Average cost of production per ton, for Hawaiian Sugar 



Company, Kauai, for 1901 49.00+* 



Average cost of production per ton, for Oahu Sugar Com- 

 pany, Oahu, for 1901 47.00+* 



Average cost of production per ton, for Ewa plantation, 



Oahu, for 1901 36.62 * 



Average cost of production per ton, for Kahuku plantation, 



Oahu, for 1901 45.00+* 



Average cost of production per ton, for Haiku plantation, 



Maui, for 1901 57 .00+* 



* Cost at mill. Investments for permanent improvements and cost of marketing 

 not included. 



