Science, Том 14John Michels (Journalist) American Association for the Advancement of Science, 1889 |
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Стр. 97
... experiments of others . The best agriculture is that which , in old countries , on worn and intractable soils , has learned by long - continued and varied experiment to make the gain of farming sure . " Once the farmer made the rude ...
... experiments of others . The best agriculture is that which , in old countries , on worn and intractable soils , has learned by long - continued and varied experiment to make the gain of farming sure . " Once the farmer made the rude ...
Стр. 329
... experiments in residual solutions and plants . The difference between these two amounts must show the loss or gain in nitrogen . A loss must indicate decomposition of either the organic nitrogen of the seed or plants or the nitric acid ...
... experiments in residual solutions and plants . The difference between these two amounts must show the loss or gain in nitrogen . A loss must indicate decomposition of either the organic nitrogen of the seed or plants or the nitric acid ...
Стр. 389
... experiments with Professor Alvord of the Maryland Agricultural Experiment Station . Three cows were selected for these experiments , described by Professor Alvord as follows : No. 1 , full - bred Jersey ; No. 2 , full - bred Ayrshire ...
... experiments with Professor Alvord of the Maryland Agricultural Experiment Station . Three cows were selected for these experiments , described by Professor Alvord as follows : No. 1 , full - bred Jersey ; No. 2 , full - bred Ayrshire ...
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A WEEKLY NEWSPAPER OF ALL THE ARTS AND SCIENCES | 35 |
Subscriptions United States and Canada | 60 |
Communications will be welcomed from any quarter Rejected manuscripts will | 236 |
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