MAWSON EXPEDITION.
TWO DAYS SPENT ON SHORE. MAGNETIC POLE CLOSER. SYDNEY, Jan. 9. A message from Sir Douglas Mawson from the Discovery states: "Wo have just embarked after two days ashore on King George V. Land, where tho British flag was officially hoisted. The hut where I raised the Hag 20 years ago still stands, although it is greatly weather-worn. " Observations compared with those of 1912 indicate I hat the Magnetic Polo is 100 miles closer than formerly, and probably now is distant only about 200 miles."
Magnetic variation, or declination, duo to terrestrial magnetism, causes the north point indicated by tho compass needlo not to be tho north point shown by astronomical observation. Observations show two points or regions which may be considered directivo centres, known as the Magnetic Poles. They do not coincide with the terrestrial poles. These points apparently undergo secular changes. Columbus was credited with tho discovery that, the compass needle does not in general point true north or south.
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New Zealand Herald, Volume LXVIII, Issue 20768, 10 January 1931, Page 9
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164MAWSON EXPEDITION. New Zealand Herald, Volume LXVIII, Issue 20768, 10 January 1931, Page 9
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