Science, Том 18American Association for the Advancement of Science, 1891 Since Jan. 1901 the official proceedings and most of the papers of the American Association for the Advancement of Science have been included in Science. |
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Стр. 47
... experiments with corn , oats , and wheat , in- cluding tests of varieties , quality of seed , date of planting , and methods of culture ; experiments in the control of insects affect- ing fruits , vegetables , and field crops ; experiments ...
... experiments with corn , oats , and wheat , in- cluding tests of varieties , quality of seed , date of planting , and methods of culture ; experiments in the control of insects affect- ing fruits , vegetables , and field crops ; experiments ...
Стр. 78
... experiments which I have made during the last four years have been executed with an apparatus having revolving arms about twenty metres in diameter , put in movement by a ten horse- power steam - engine . They are chiefly as follows ...
... experiments which I have made during the last four years have been executed with an apparatus having revolving arms about twenty metres in diameter , put in movement by a ten horse- power steam - engine . They are chiefly as follows ...
Стр. 174
... experiments were undertaken at the Cornell University Experiment Station , by Professor L. H. Bailey , to determine what influence the ordinary street electric light ex- erts upon plants in greenhouses . Much has been said among gar ...
... experiments were undertaken at the Cornell University Experiment Station , by Professor L. H. Bailey , to determine what influence the ordinary street electric light ex- erts upon plants in greenhouses . Much has been said among gar ...
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