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Page 208
BIRDS AS AVIATORS ' MODELS THE MACHINE FOR POLLENIZING CLOVER . ... over to little purpose as yet , is the fact that some birds have the power to holds themselves in the air without being dependent upon the beating of their wings .
BIRDS AS AVIATORS ' MODELS THE MACHINE FOR POLLENIZING CLOVER . ... over to little purpose as yet , is the fact that some birds have the power to holds themselves in the air without being dependent upon the beating of their wings .
Page 209
BIRDS AS AVIATORS ' MODELS FIG . 4. APPEarance of a BIRD THAT SOARS SLOWLY. The kite , the sparrow and the buzzard practice the kind of flight called the sailing flight , but the true kings of the air are the eagles , the vultures and ...
BIRDS AS AVIATORS ' MODELS FIG . 4. APPEarance of a BIRD THAT SOARS SLOWLY. The kite , the sparrow and the buzzard practice the kind of flight called the sailing flight , but the true kings of the air are the eagles , the vultures and ...
Page 210
APPEarance of a BIRD THAT SOARS SLOWLY . The point of the wing carried forward . BIRDS AS AVIATORS ' MODELS FIG . 7. THE FRIGATE. the hawk's wing , while in the eagle's wing the longest feather is the sixth . Besides , the rowing wing ...
APPEarance of a BIRD THAT SOARS SLOWLY . The point of the wing carried forward . BIRDS AS AVIATORS ' MODELS FIG . 7. THE FRIGATE. the hawk's wing , while in the eagle's wing the longest feather is the sixth . Besides , the rowing wing ...
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