Catechism of Agricultural Chemistry and GeologyW. Blackwood, 1844 - 48 sider |
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Side 18
... referring to the practice in his own or the neighbour- ing parishes , and pointing out its advantages or defects . Q. Whence is the inorganic part of the soil de- rived ? A. The inorganic part of the soil is derived from 18 CATECHISM OF ...
... referring to the practice in his own or the neighbour- ing parishes , and pointing out its advantages or defects . Q. Whence is the inorganic part of the soil de- rived ? A. The inorganic part of the soil is derived from 18 CATECHISM OF ...
Side 20
... referring to the different kinds of land which occur in the neighbourhood . Q. Which of these two kinds of land is most easily and cheaply cultivated ? A. The light lands , called often also barley or turnip soils . Q. Why are these ...
... referring to the different kinds of land which occur in the neighbourhood . Q. Which of these two kinds of land is most easily and cheaply cultivated ? A. The light lands , called often also barley or turnip soils . Q. Why are these ...
Side 21
... referring to the layers of iron - ochre , or pan , which in many districts , are met with , —and to such curious facts as that observed in the East of Fife , where the beans and oats , which look well up to April or May , often blacken ...
... referring to the layers of iron - ochre , or pan , which in many districts , are met with , —and to such curious facts as that observed in the East of Fife , where the beans and oats , which look well up to April or May , often blacken ...
Side 25
... referring to the above table the teacher may ex- ercise the understanding of his pupils by asking for other examples of a similar kind , which the intelligent boy will readily give by considering the numbers on the table . Thus he may ...
... referring to the above table the teacher may ex- ercise the understanding of his pupils by asking for other examples of a similar kind , which the intelligent boy will readily give by considering the numbers on the table . Thus he may ...
Side 48
... referring to his table of the com- position of the ash of different kinds of hay , and ex- plaining that the ash of corn and of the ordinary root- crops contains a certain quantity of all the substances there 48 CATECHISM OF AGRICULTURAL.
... referring to his table of the com- position of the ash of different kinds of hay , and ex- plaining that the ash of corn and of the ordinary root- crops contains a certain quantity of all the substances there 48 CATECHISM OF AGRICULTURAL.
Vanlige uttrykk og setninger
AGRICULTURAL CHEMISTRY ammonia animal require applied bone-earth bones burns called carbon and water carbonic acid gas CHEMISTRY AND GEOLOGY Chlorine clover common salt compost consist of carbon contain cow-dung crops cwts draining dung earth EDINBURGH employed fall to powder farm-yard manure farmer fattening fermentation fertile give gluten grass lands grow guano gypsum hydrogen inorganic kind of air large quantity leaves LECTURES ON AGRICULTURAL light lands lighted taper limestone liquid magnesia marl mixed nitrogen oats obtain oil of vitriol organic food organic matter oxide of iron oxygen gas phosphate of lime phosphoric acid plants require potash potatoes produced profit proportion pupils quicklime roots sea-weed shell sand Silica slaked smell soda soil consists sour starch straw subsoil substances sulphuric acid supply taste teacher may exhibit teacher may illustrate teacher will show turnip usually vegetable waste wheat white fumes wood woody fibre
Populære avsnitt
Side 17 - Q. Whence is the organic part of the soil derived? A. It is derived from the roots and stems of decayed plants, and from the dung and remains of animals and insects of various kinds. Q. Does this organic part form a large proportion of the soil ? A. Of peaty soils it forms sometimes three-fourths of the whole weight; but of rich and fertile soils it does not usually form more than from a twentieth to a tenth of the whole weight. Q. Can a soil bear good crops which does not contain a considerable...