The Theory of Horticulture: Or, An Attempt to Explain the Principal Operations of Gardening Upon Physiological PrinciplesLongman, Orme, Brown, Green, and Longmans, 1840 - 387 من الصفحات |
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الصفحة 40
... inch of the epidermis of Crinum amabile is estimated at 40,000 , and in that of Mesembryanthemum at 70,000 , and of an Aloe at 45,000 ; the first in- habiting the damp ditches of India , the last two natives of the dry rocks of the Cape ...
... inch of the epidermis of Crinum amabile is estimated at 40,000 , and in that of Mesembryanthemum at 70,000 , and of an Aloe at 45,000 ; the first in- habiting the damp ditches of India , the last two natives of the dry rocks of the Cape ...
الصفحة 41
... inch in their longer diameter , large and active , while the stomates of the Yucca are not more than 20 of an inch long in the aperture , and comparatively inert . The Yucca , therefore , with its numerous stomates , has weaker powers ...
... inch in their longer diameter , large and active , while the stomates of the Yucca are not more than 20 of an inch long in the aperture , and comparatively inert . The Yucca , therefore , with its numerous stomates , has weaker powers ...
الصفحة 45
... inch in diameter , and eight inches long , cementing it fast at r ; the lower part of the tube d z was eighteen inches long and a quarter of an inch diameter in bore . . . . Then I turned the lower end of the tube ( z ) up- permost ...
... inch in diameter , and eight inches long , cementing it fast at r ; the lower part of the tube d z was eighteen inches long and a quarter of an inch diameter in bore . . . . Then I turned the lower end of the tube ( z ) up- permost ...
الصفحة 47
... inches above the ground , had perspired as follows : - Ounces Avoirdupois . In twelve hours of a very dry warm day 30 , On another day In a dry warm night without dew In a night with some small dew 20 , 3 , 0 ; and that when the dew was ...
... inches above the ground , had perspired as follows : - Ounces Avoirdupois . In twelve hours of a very dry warm day 30 , On another day In a dry warm night without dew In a night with some small dew 20 , 3 , 0 ; and that when the dew was ...
الصفحة 75
... inches in length . These were then carefully detached , with their fibrous roots , from the tubers , and were com- mitted to the soil , when , having little to subsist upon except water , not a single curled leaf was produced , though ...
... inches in length . These were then carefully detached , with their fibrous roots , from the tubers , and were com- mitted to the soil , when , having little to subsist upon except water , not a single curled leaf was produced , though ...
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عبارات ومصطلحات مألوفة
absorbing abundance action alburnum amount appears Apple artificial atmosphere bark become blossoms BOTANY bottom heat branches buds calyx carbonic acid cause cellular circumstances cloth lettered cold colour consequence crop cultivated damp decompose diminished ditto double flowers dryness earth Edition effect employed epidermis exposed favourable flowers fluid formed fruit gardener germination grafting grow growth healthy Hort Horticultural Horticultural Society inches injury J. C. LOUDON kind Knight leaf leaf-buds leaves manure medullary rays moisture nature necessary obtained operation organisable matter oxalic acid oxygen Peach Pear perature period perish perspiration Pine-apple pistil plants Plum pollen pots practice present produce propagation proportion quantity ripening roots scion season seed seedling shoots soil species spring stamens stem succulent sufficient summer supply surface take place temperature thermometer tion tissue Trans transplanting trees vapour varieties vegetable Vine vital winter wood woody wound young
مقاطع مشهورة
الصفحة 315 - ... his crops of the same kind do, when he uses the seeds of plants, which have passed through several successive generations in his colder climate; and in my own experience, I have found that the crops of wheat on some very high and cold ground, which I cultivate, ripen much earlier when I obtain my seed-corn from a very warm district and gravelly soil, which lies a few miles distant, than when I employ the seeds of the vicinity.
الصفحة i - Theory and Practice of Horticulture ; or, an Attempt to explain the principal Operations of Gardening upon Physiological Grounds: Being the Second Edition of the Theory of Horticulture, much enlarged ; with 98 Woodcuts.
الصفحة 162 - I attached the tree to the stake, at the height of six feet, by means of a slender pole about twelve feet long; thus leaving the tree at liberty to move towards the north and south, or, more properly, in the segment of a circle, of which the pole formed a radius; but in no other direction. Thus circumstanced, the diameter of the tree from north to south, in that part of its stem which was most exercised by the wind, exceeded that in the opposite direction, in the following autumn, in the proportion...
الصفحة 110 - ... tree, nor its foliage, nor its blossoms, appear to sustain any material injury by this sudden suspension of its functions ; but the crop of acorns invariably fails. The apple and pear tree appear to be affected to the same extent by similar degrees of cold. Their blossoms, like those of the oak, often unfold perfectly well, and present the most healthy and vigorous character ; and their pollen sheds freely. Their fruit also appears to set well ; but the whole, or nearly the whole, falls off just...
الصفحة 126 - ... the ground and rendering it impervious, so that the descent of water to the roots is impeded, whether it is communicated artificially or by the fall of rain. It is, therefore, doubtful whether artificial watering of plants in the open air is advantageous, unless in particular cases ; and most assuredly, if it is done at all, it ought to be much more copious than is usual.
الصفحة 75 - I drew many years ago, is perfectly consistent with the opinions I have subsequently entertained* respecting the formation of leaves. I therefore suffered a quantity of Potatoes, the produce almost wholly of diseased plants, to remain in the heap, where they had been preserved during winter, till each tuber had emitted shoots of three or four inches long.
الصفحة 69 - If the pistil of one species be fertilised by the pollen of another species, which may take place in the same genus, or if two distinct varieties of the same species be in like manner intermixed, the seed which results from the operation will be intermediate between its parents, partaking of the qualities of both father and mother. In the first case the progeny is hybrid, or mule ; in the second it is simply erossbred.
الصفحة 155 - I employ very little fire-heat, and never give air, till my Grapes are nearly ripe, in the hottest and brightest weather, further than is just necessary to prevent the leaves being destroyed by excess of heat. Yet this mode of treatment does not at all lessen the flavour of the fruit, nor render the skins of the Grapes thick ; on the contrary, their skins are always most remarkably thin, and very similar to those of Grapes which have ripened in the open air.
الصفحة 237 - ... of the tree, and its power to nourish a succession of heavy crops, are diminished, apparently, by the stagnation, in the branches and stock, of a portion of...
الصفحة 342 - Fahrenheit. After these showers have continued for a short period, the tropical summer appears in all its splendour. Clouds are seldom seen in the sky; the heat of the sun is only rendered supportable by the sea breeze, which blows regularly from the south-east during the greater part of the day. The nights are calm and serene, the moon shines more brightly than in Europe, and emits a light that enables man to read the...