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Note on the analysis of a mineral water from the Otira Gorge

Gray, George (New Zealand Institute, 1889)
The sample of water referred to in the present note was collected by the writer on the 21st January, 1889, in the Otira Gorge, from a spring which is stated to have been first discovered shortly after the earthquake of the 1st September, 1888. From the re ...
On a leucophyre from the Selwyn Gorge

Hutton, F. W.; Gray, George (New Zealand Institute, 1887)
Description and chemical analysis of rock found at Selwyn Gorge. It was concluded to be an augite rock with some plagioclase and iron oxide; sometimes, however, the saussurite appears to be as abundant as the augite. That it is an altered rock is undoubte ...