I'Vles have been noticed flying at a, height of 6000 ft., and storks and buzzards at 2000 ft. A lark wil rise to the same height, and so will crows. As a rule, however, birds do not fly at a greater height than 1000 ft. Cork is about the most buoyant substance, there is; but if sunk 200 ft. in. the ocean it will not rise again to the surface, owing to the great pressure of water. At any less depth it will gradually work its way back to light. The letters delivered in London on Monday are 30 per cent, more mioißrous than those delivered on any sitlwf day in the week.
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https://paperspast.natlib.govt.nz/newspapers/DOM19180117.2.34
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Dominion, Volume 11, Issue 97, 17 January 1918, Page 5
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113Untitled Dominion, Volume 11, Issue 97, 17 January 1918, Page 5
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