Transactions and proceedings of the New Zealand Institute . no fewer than47,000,000,000 gallons. I estimate that, under ordinary con-ditions of soil and temperature, an inch of rainfall would moistenthe ground for a depth of 0 inches, that is supposing no portionof it was allowed to pass away either by evaporation or bydrainage in the way of surplus soakage. Consequently, 15inches of rainfall would moisten the ground to a depth of 90inches, or 7 feet 0 inches. At this depth it may be said thatthe ground is generally moist and damp. It is evident, there-fore, that, without considering the quest
Transactions and proceedings of the New Zealand Institute . no fewer than47,000,000,000 gallons. I estimate that, under ordinary con-ditions of soil and temperature, an inch of rainfall would moistenthe ground for a depth of 0 inches, that is supposing no portionof it was allowed to pass away either by evaporation or bydrainage in the way of surplus soakage. Consequently, 15inches of rainfall would moisten the ground to a depth of 90inches, or 7 feet 0 inches. At this depth it may be said thatthe ground is generally moist and damp. It is evident, there-fore, that, without considering the question of bedding, thedistrict under notice had no surplus soakage last year to maintainthe artesian supply, which I have already pointed out amounts,at the lowest possible estimate, to 8,884,000,000 gallons perannum ; and either the supply was the accumulation of previousyears of soakage, or it is obtained from some outside source. I Inmsatjfuttts T$m $$n]mjb %nMtiui$f Vol. xx. SKETCH MAP — or — HERETAUNGA PLAINS Western ^ufclort Ahuriri nafur w. C Jfidrui/ihers _h: b ae7t 7« illustrnie. Hijiar T>y% JTiJl Inutsa^mns feut gfoafotjfc Jitstttote, Vol. xx.
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectscience, bookyear1887
