Nature, Volume 85Sir Norman Lockyer Macmillan Journals Limited, 1910 |
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Página 258
... recent genera is rendered more difficult because of the greater gulf between recent members of the group and those which flourished in the Jurassic era . There can , however , be no reasonable doubt that the cycads of to - day are ...
... recent genera is rendered more difficult because of the greater gulf between recent members of the group and those which flourished in the Jurassic era . There can , however , be no reasonable doubt that the cycads of to - day are ...
Página 289
... RECENT PROGRESS IN ELECTRIC LIGHTING.1 Incandescent Lamps . THE most remarkable development within recent times is the production of an incandescent lamp with an efficiency approximating to 1 candle - power per watt . The best known of ...
... RECENT PROGRESS IN ELECTRIC LIGHTING.1 Incandescent Lamps . THE most remarkable development within recent times is the production of an incandescent lamp with an efficiency approximating to 1 candle - power per watt . The best known of ...
Página 553
... recent work in Asia . " It is no longer possible , " as he usefully remarks , to maintain that the diffusion of Lower Palæozoic life was uniform . " Mr. La Touche ( p . 30 ) very interestingly shows that recent beds of silt , laid down ...
... recent work in Asia . " It is no longer possible , " as he usefully remarks , to maintain that the diffusion of Lower Palæozoic life was uniform . " Mr. La Touche ( p . 30 ) very interestingly shows that recent beds of silt , laid down ...
Índice
Grignard M New Methods for the Synthesis of Nitriles Hamerton Captain A E Experiments to ascertain | xxix |
Lainé E the Nitrates in the Atmosphere of the Antarctic Lepsius Prof R Geologie von Deutschland und | xxxix |
Lang Prof W H Morphology of the Stock of Isoetes 59 Lewis B Educational Experiments in Schools 354 | xlvi |
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