Paxton's Magazine of Botany, and Register of Flowering Plants, Volume 11

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Sir Joseph Paxton
Orr and Smith, 1844 - Botany
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Page 229 - from water and the atmosphere, and after perishing afford new materials to those already provided ; the decomposition of the rock still continues, and at length, by slow and gradual processes, a soil is formed in which even forest trees can fix their roots, and which is fitted to reward the labour of the cultivator.
Page 187 - flowering abundantly iní June, and easily increased either by seeds or layers. It was raised in the garden of the Horticultural Society, from seeds received from the East India Company at different times, and under various names, but more particularly those of
Page 81 - by sap, like a seed in moist earth, it is in a proper situation for growing ; the influence of the sun sets in motion the juices of the bud and of the seed, and the first operation in both of them is to send down roots a certain depth
Page 250 - air. An atmosphere of carbonic acid is therefore contained in every fertile soil, and is the first and most important food for the young plants which grow in it. In spring, when those organs of plants are absent
Page 131 - the production of new bark issuing from the edges, and gradually narrowing the extent of the wound ; and then by the production of new layers of wood, formed under the bark as before. The new wood will not indeed unite with the portion of alburnum that had been exposed to the air ; but it will exhibit, on
Page 228 - quartz, feldspar, and mica. The quartz is almost pure siliceous earth, in a crystalline form. The feldspar and mica are very compounded substances ; both contain silica, alumina, and oxide of iron : in the feldspar there is usually lime and potassa ; in the mica, lime and magnesia.
Page 250 - brown coaly-looking substance remains, in which this property is entirely wanting. This substance is called mould ; it is the product of the complete decay of woody fibre. Mould constitutes the principal part of all the strata of brown coal and peat.
Page 250 - The roots perform the functions of the leaves from the first moment of their formation ; they extract from the soil their proper nutriment ; namely, the carbonic acid generated by the humus.
Page 250 - by loosening the soil which surrounds young plants we favour the access of air, and the formation of carbonic acid ; and on the other hand the quantity of their food is diminished by every difficulty which opposes the renewal of
Page 250 - Woody fibre in a state of decay is the substance called humus. The property of woody fibre to convert surrounding oxygen gas into carbonic acid, diminishes in proportion as its decay advances, and at last a certain quantity of

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