The Technical World Magazine, Volume 15Technical World Company, 1911 |
From inside the book
Results 11-15 of 57
Page 178
... BIRD . THE " TROUBLE MEN " IN ALASKA HAVE ARDUOUS WORK. of checking , if possible , the pest in the Eastern United States . However , in California a native parasitic insect , the Aphelinus fuscipennis , adapted its taste to the San Jose ...
... BIRD . THE " TROUBLE MEN " IN ALASKA HAVE ARDUOUS WORK. of checking , if possible , the pest in the Eastern United States . However , in California a native parasitic insect , the Aphelinus fuscipennis , adapted its taste to the San Jose ...
Page 203
... BIRDS AS AVIATORS ' MODELS. F OR years all cotton men , whether growers , ginners or manufacturers , have recog- nized that a radical improve- ment was necessary in the present method of ginning cotton . The enormous loss in wasteful ...
... BIRDS AS AVIATORS ' MODELS. F OR years all cotton men , whether growers , ginners or manufacturers , have recog- nized that a radical improve- ment was necessary in the present method of ginning cotton . The enormous loss in wasteful ...
Page 208
... BIRD THAT SOARS SLOWLY. BIRDS AS AVIATORS ' MODELS FIG . 7. THE FRIGATE BIRD - ONE OF THE. A MONG the unexplained things of nature that man has been fretting his brain over to little purpose as yet , is the fact that some birds have the ...
... BIRD THAT SOARS SLOWLY. BIRDS AS AVIATORS ' MODELS FIG . 7. THE FRIGATE BIRD - ONE OF THE. A MONG the unexplained things of nature that man has been fretting his brain over to little purpose as yet , is the fact that some birds have the ...
Page 209
... birds some clearly defined classes : First , birds exclusively rowers ; second , birds practicing the rowing flight and soaring flight ; third , birds practicing rowing and sailing ; fourth , birds prac- ticing only sailing flight . Are ...
... birds some clearly defined classes : First , birds exclusively rowers ; second , birds practicing the rowing flight and soaring flight ; third , birds practicing rowing and sailing ; fourth , birds prac- ticing only sailing flight . Are ...
Page 210
... birds , such as the petrel and frigate birds ; the others have been given to the great birds of prey in order that they may take advan- tage of the least breath of wind and may cover enough space find their prey . dented by reason of ...
... birds , such as the petrel and frigate birds ; the others have been given to the great birds of prey in order that they may take advan- tage of the least breath of wind and may cover enough space find their prey . dented by reason of ...
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