Proceedings of the American Philosophical Society Held at Philadelphia for Promoting Useful Knowledge, Том 68American Philosophical Society, 1929 |
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Сторінка 97
... stage on which the first acts of the human drama were played . Let us examine for a moment the stage . It was ample in size ; the greater part of the land mass lies north of the equator and in the hemisphere which suffered least from ...
... stage on which the first acts of the human drama were played . Let us examine for a moment the stage . It was ample in size ; the greater part of the land mass lies north of the equator and in the hemisphere which suffered least from ...
Сторінка 245
... stages to steps , those following to an inclined plane . The former he delimits by the moults which separate them , in the latter he groups " in the same stage the intervals between three or four moults , since the intermediate moults ...
... stages to steps , those following to an inclined plane . The former he delimits by the moults which separate them , in the latter he groups " in the same stage the intervals between three or four moults , since the intermediate moults ...
Сторінка 250
... stages follow a regular geometrical progression . " The ratios which he determined , by dividing the width of the head of the last stage into the width of the head of the preceding stage , and so on , were different for the different ...
... stages follow a regular geometrical progression . " The ratios which he determined , by dividing the width of the head of the last stage into the width of the head of the preceding stage , and so on , were different for the different ...
Зміст
Mans Future in the Light of His Past and Present By ALEŠ | 1 |
The Vegetation of the Screes or Talus Slopes of Western North | 13 |
Saxifraga Tolmiei Torr Gray a screecoverer | 20 |
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