The Theory and Practice of Horticulture: Or, An Attempt to Explain the Chief Operations of Gardening Upon Physiological GraoundsLongman, Brown, Green, and Longmans, 1855 - 606 страници |
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Страница xiv
... Winter and Summer . - Temperature of Earth and Atmosphere BOOK II . OF THE PHYSIOLOGICAL PRINCIPLES UPON WHICH THE OPERATIONS OF HORTICULTURE ESSENTIALLY DEPEND Of Bottom Heat CHAPTER I. . 106 133 . 134 CHAPTER II . Of the Moisture of ...
... Winter and Summer . - Temperature of Earth and Atmosphere BOOK II . OF THE PHYSIOLOGICAL PRINCIPLES UPON WHICH THE OPERATIONS OF HORTICULTURE ESSENTIALLY DEPEND Of Bottom Heat CHAPTER I. . 106 133 . 134 CHAPTER II . Of the Moisture of ...
Страница 26
... winter , they are perpetually attract- ing food from the earth , and conveying it into the interior of the plant , where , at that season , it is stored up till it is required by the young shoots of the succeeding year . The whole ...
... winter , they are perpetually attract- ing food from the earth , and conveying it into the interior of the plant , where , at that season , it is stored up till it is required by the young shoots of the succeeding year . The whole ...
Страница 49
... idea that it proceeds from above downwards through the alburnum . The flow of the sap must not , however , be confounded with the motion of the sap , which takes place in the winter as well as E 50 30 BLEEDING FROM ROOT AND STEM . in the.
... idea that it proceeds from above downwards through the alburnum . The flow of the sap must not , however , be confounded with the motion of the sap , which takes place in the winter as well as E 50 30 BLEEDING FROM ROOT AND STEM . in the.
Страница 52
... winter when leaves are absent . In order to explain that fact we must have recourse to the action of endosmose , a force the effect of which is to produce propulsion . A tree may be assumed to be a combination of hollow tubes freely ...
... winter when leaves are absent . In order to explain that fact we must have recourse to the action of endosmose , a force the effect of which is to produce propulsion . A tree may be assumed to be a combination of hollow tubes freely ...
Страница 64
... winter . It does not , however , appear that this hypothesis rests upon any experimental basis . The mere fact of plants absorbing water from the earth would render it probable that they have some means of parting with a portion of it ...
... winter . It does not , however , appear that this hypothesis rests upon any experimental basis . The mere fact of plants absorbing water from the earth would render it probable that they have some means of parting with a portion of it ...
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absorb action alburnum appears atmosphere autumn bark bear become blossom-buds branches buds bulb calyx carbonic acid carpels cause cellular Chiswick chloroform circumstances cold colour consequence crop cultivated damp degree dryness earth effect employed epidermis evaporation experiments exposed fact favourable feet flowers fluid formation formed fruit gardener germination grafting ground grow growth healthy herbaceous horizontal Hort Horticultural Horticultural Society hygrometer inches increased injury leaf leaf-buds leaves ligature light loam matter mean temperature mode moisture mucilage nature night observed operation organs Peach Pear peat perish perspiration Pine-apple pistil plants pollen portion pots practice produced propagation proportion pruning quantity removed Rhododendrons ripening roots scion season seeds sepals shortened soil species spring stamens stem substance sufficient summer surface temperature thermometer timber tissue trees vapour varieties vegetation vigour Vine vitality Wardian warm winter wood wound