Nature, Količina 80Sir Norman Lockyer Macmillan Journals Limited, 1909 |
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Zadetki 1–3 od 84
Stran 77
... considerable technical importance . It was found that the yield both of barley and wheat is much increased by cultivation , and the most thorough cultivation tried gave the largest profit . The use of machinery tends to diminish the ...
... considerable technical importance . It was found that the yield both of barley and wheat is much increased by cultivation , and the most thorough cultivation tried gave the largest profit . The use of machinery tends to diminish the ...
Stran 265
... considerable distances in the desired directions , while they travel only over a comparatively short distance in other directions , and that , with aerials of moderate height , greater efficiency in a given direction can be obtained ...
... considerable distances in the desired directions , while they travel only over a comparatively short distance in other directions , and that , with aerials of moderate height , greater efficiency in a given direction can be obtained ...
Stran 293
... considerable change has come about in the requirements of roads since the advent of the motor - car . After the introduction of rail- ways the main roads became very much neglected , and little interest was taken in their condition ...
... considerable change has come about in the requirements of roads since the advent of the motor - car . After the introduction of rail- ways the main roads became very much neglected , and little interest was taken in their condition ...
Vsebina
KNOWLEDGE | 1 |
Crucibles Scrap Utensils Wire Foil Residues c | xvii |
and oil immersion obje tives all in brand new condition price 25 | xxvii |
19 preostalih delov ni prikazanih
Druge izdaje - Prikaži vse
Pogosti izrazi in povedi
Agriculture apparatus application April Arthur Gamgee astronomical B.Sc Botany British carbon Catalogue cent chemical Chemistry College coloured contains course Crown 8vo D.Sc deal discussed edition electric elementary engine experimental experiments Franco-British Exhibition gases Geology give given heat hydrogen illustrated important inches insects Institution instruments interesting J. J. Thomson Karl Pearson laboratory large number larva lectures London magnetic Makers March Mathematics ment Messrs method microscope Museum National Physical Laboratory observations Observatory obtained Orthoptera oxygen paper photographs physical physiology plants plates Poldhu post free practical present pressure Price produced Prof Professor published radiation radio-active radium radium bromide recent reference regard schools scientific secondary species specimens steam Street structure technical temperature text-books theory thorium tion tube University University of London velocity Victoria Land volume Zoology