Nature, Volume 104Sir Norman Lockyer Macmillan Journals Limited, 1919 - Electronic journals |
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Page 116
... taken from weathered slip masses , in consequence of which they showed a high proportion of ash . Now , however , that the coal has been reached in situ , it proves to be of high quality , clean and lustrous , and , unlike the Tertiary ...
... taken from weathered slip masses , in consequence of which they showed a high proportion of ash . Now , however , that the coal has been reached in situ , it proves to be of high quality , clean and lustrous , and , unlike the Tertiary ...
Page 281
... taken with the 13 - in . ( stopped down to 8 in . ) are out of focus . Since the focus was good on photographs taken at night a few hours earlier , and also on the check plates taken before sunrise in July , the explanation appears to ...
... taken with the 13 - in . ( stopped down to 8 in . ) are out of focus . Since the focus was good on photographs taken at night a few hours earlier , and also on the check plates taken before sunrise in July , the explanation appears to ...
Page 697
... taken in January , 1896 , by Campbell Swinton , with an exposure of twenty minutes , and the other in December , 1919 , by Knox , with a single - impulse flash occupying about 1/100 sec . In the former the bones can be seen , though ...
... taken in January , 1896 , by Campbell Swinton , with an exposure of twenty minutes , and the other in December , 1919 , by Knox , with a single - impulse flash occupying about 1/100 sec . In the former the bones can be seen , though ...
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