294 . Transactions — Geology. 
No further depression of the land is permissible with the evidence at our 
In the above theory I have been obliged to allow for vast changes in the 
elevation and depression of land, but if we consider that since the deposition of 
the tertiary strata a large part of Europe has emerged from the ocean, and that 
tertiary rocks have been elevated to a height of 5,000 feet in Sicily, and, if I 
remember right, also on the flanks of the Alps, it is surely not unreasonable to 
The series of ancient valleys on the opposite shore of the South Island, 
which now form harbours and sounds from Cloudy Bay to the French Pass, 
are at once suggestive of depression, and certainly give the idea that Cook 
Strait is now the base of a synclinal curve, which, on the supposition of the 
correctness of my theory, formerly formed a horizontal line, or possibly an 
anticlinal curve, 
It will be seen that I have given a liberal allowance of time, for the 
elevation I suppose must have been previous to the deposition of the older 
tertiaries, 
That Port Nicholson was formerly a fresh-water lake сап be proved with- 
out the necessity for much elevation, but the peculiar form and denudation of 
the land, together with the preparation of the valley basin, requires, I think, 
that we must assume a high elevation in former times, 
Art. XLIX.—WNotes on the Glacial Period. By A. D. Donsox, С.Е, 
[Read before the Wellington Philosophical Society, 
22nd September, 1873.] 
Tx a former paper,* 
which was merely a description of glacial remains in the 
Nelson Province, I suggested that the former extension of glaciers was due 
either to the much 
that paper I have come to the conclusion t. 
hat the last greatest glacial extension 
was due to a greater elevation of the land, and that, although other agencies— 
see ee Dee a шш: s 
* Trans. N.Z. Inst., Vol. IV., p. 336. 
