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 14
... quantity of heat ; in addition , it is necessary that a communication with the atmosphere should be provided , if germination is to be maintained in a healthy state . A seed , when fully ripe , contains a larger proportion of carbon ...
... quantity of heat ; in addition , it is necessary that a communication with the atmosphere should be provided , if germination is to be maintained in a healthy state . A seed , when fully ripe , contains a larger proportion of carbon ...
Страница 26
... quantity of food that a plant requires when the sap is consumed rapidly by the leaves , as in the spring , the roots are in rapid action also ; and as the autumn advances , and leaves require a smaller quantity of food , the roots ...
... quantity of food that a plant requires when the sap is consumed rapidly by the leaves , as in the spring , the roots are in rapid action also ; and as the autumn advances , and leaves require a smaller quantity of food , the roots ...
Страница 29
... quantity of such substances deposited on that extent of ground may be safely estimated as follows : - The average depth of rain which falls in the neighbourhood of London is well ascertained to be about twenty - four inches per annum ...
... quantity of such substances deposited on that extent of ground may be safely estimated as follows : - The average depth of rain which falls in the neighbourhood of London is well ascertained to be about twenty - four inches per annum ...
Страница 30
... quantities of carbonate of lime , and he has found this salt filling their large intercellular cavities , and forming a crop of beautiful crystals on their epidermis , whilst those of the same species , growing in ponds with a less quantity ...
... quantities of carbonate of lime , and he has found this salt filling their large intercellular cavities , and forming a crop of beautiful crystals on their epidermis , whilst those of the same species , growing in ponds with a less quantity ...
Страница 34
... quantity compared with their bulk . It is also found that in them the wood has a lateral communication with every leaf - bud , as that of ordinary plants has with every leaf . When woody matter is first plunged into the cellular tissue ...
... quantity compared with their bulk . It is also found that in them the wood has a lateral communication with every leaf - bud , as that of ordinary plants has with every leaf . When woody matter is first plunged into the cellular tissue ...
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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