The Technical World Magazine, Volume 15Technical World Company, 1911 |
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Page 173
... natural checks upon the endless number and variety of forms of life , a fairly even balance is main- tained . But man , in providing for the wants of a complex and highly artificial civilization serious- ly disturbs this nat- tural ...
... natural checks upon the endless number and variety of forms of life , a fairly even balance is main- tained . But man , in providing for the wants of a complex and highly artificial civilization serious- ly disturbs this nat- tural ...
Page 177
... natural habitat of the pest , as it was anticipated that its natural check would be discovered there also . Its true home was at last found , in the neighborhood of Pekin and Tientsin , China , where its enemy was discovered in the ...
... natural habitat of the pest , as it was anticipated that its natural check would be discovered there also . Its true home was at last found , in the neighborhood of Pekin and Tientsin , China , where its enemy was discovered in the ...
Page 190
... natural resource , have not the slightest hesitation in destroying it utterly and for all time to come . It has been the practice of the canning com- panies , when they had wiped out all the salmon in one river , simply to move the ...
... natural resource , have not the slightest hesitation in destroying it utterly and for all time to come . It has been the practice of the canning com- panies , when they had wiped out all the salmon in one river , simply to move the ...
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acre alfalfa American automobile average ball Batik birds building built bushels canal cent Chicago coal color Colorado concrete construction cost crop cylinder dollars eggs electric engine fact factory farm farmer feet fire firebox five four fruit gasoline glacier growers guinea pigs heat hobble skirt horse hundred inches invention Keokuk land light lobster locomotive loess Los Angeles machine manufacture match ment method miles million motor muskeg operation orchard ostrich phossy jaw photograph plant pounds produced Quebec bridge railroad result river road rock saving ship side speed station steel stream Tampico telegraphy tenant thing thousand tion tons town trains trees tricity truck Tuxpan River twenty Valley vanadium West white phosphorus wings wire wireless York