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A short time ago the waterworks authori ties sent, to Mr. J. I. Fairweatlierj the sup erintendent of the waterworks at Mount Gambier, a deep-sea sounding line and Ither

ture of the water of the Blue Lake. He; made- the test on Friday List. Tlie air immediately over the : water showed 52 deg. F. .. At the surface the water was' 54 deg..' P.,-; at 50 ft. 53 deg. F., and from that depth to the bottom 53 deg. F. He did not test the deepest part, the spot where, he tried; the temperature being only 264 ft. deep. In conversation with a re presentative of The Register, the Conserva tor of Water (Mr. J. W. Jones, said:— 'The test, was made partly on account of the little unrest' that exists about volca noes. The Blue Lake is a volcanic crater of very considerable depth. '' It is gene rally, supposed to be unfathomable-, but the depths given, in the tests show that a good deal of the bottom is(at a much less depth than people imagine. In Uw light of the volcanic disturbances in other parts of the world— Martinique and Central America, for instance— and because of the frequent recent earthquake shocks, particularly in the south-eastern districts, there lias been a good deal of unrest at Mount Gambier, which is the only volcanic region in South Australia. While it was not for :i moment officially supposed that there was the slight est indication of any disturbance at Mount (trambier, favourable opportunity was talcen to test the temperature of the lake water at its greatest depth with' a deep-sea ther mometcr, used for testing the temperature in deep 'artesian bores. A record of these deep-water temperatures, both in lakes and oceans, is of considerable scientific interest and importance.'