Sachs, in his recently published and valuable work on physiological botany,' remarks much the same deficiencies, notwithstanding that some progress has been made in these matters. The evil consists in this, that when it is desired to observe the action... Journal of Botany, British and Foreign - Page 1791866Full view - About this book
| Geology - 1866 - 470 pages
...matters. The evil consists in this, that when it is desired to observe the action of temperature, either fixed or varied, mean or extreme, or the effect of...upon the atmosphere. Place plants under a receiver, and they are no longer in a natural condition ; leave them in the open air, and the winds and currents,... | |
| Floriculture - 1866 - 676 pages
...or the effect of light, it is exceedingly difficult, and sometimes imposwiblc, when observations arc made in the usual manner, to eliminate the effects...to ascertain the influence of the gases diffused in tho atmosphere around plants, or that of the plants themselves upon the atmosphere. Place plants under... | |
| Cleveland Abbe - Crops and climate - 1905 - 400 pages
...matters. The evil consists in this, that when it is desired to observe the action of temperature, either fixed or varied, mean or extreme, or the effect of...plants in too contracted a space, either in tubes or bell glasses. This last objection is apparent when it is wished to ascertain the influence of the gases... | |
| United States. Weather Bureau - 1905 - 398 pages
...matters. The evil consists in this, that when it is desired to observe the action of temperature, either fixed or varied, mean or extreme, or the effect of...plants in too contracted a space, either in tubes or bell glasses. This last objection is apparent when it is wished to ascertain the influence of the gases... | |
| Meteorology, Agricultural - 1905 - 396 pages
...made in the usual manner), to eliminate the effects of the constant variations of heat and light. Tn the laboratory it is possible to operate under more...plants in too contracted a space, either in tubes or bell glasses. This last objection is apparent when it is wished to ascertain the influence of the gases... | |
| 1866 - 924 pages
...matters. The evil consists in this, that when it is desired to observe the action of temperature, either fixed or varied, mean or extreme, or the effect of...upon the atmosphere. Place plants under a receiver, and they are no longer in a natural condition ; leave them in the open air, and the winds and currents,... | |
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