Catechism of Agricultural Chemistry and GeologyW. Blackwood, 1844 - 48 sider |
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Side
... Chemistry and Geology ; and any little apparatus he may require will be readily obtained , at the cost of a few shillings , from Richard Griffin and Co. of Glasgow . CATECHISM OF AGRICULTURAL CHEMISTRY AND GEOLOGY . Q. WHAT is.
... Chemistry and Geology ; and any little apparatus he may require will be readily obtained , at the cost of a few shillings , from Richard Griffin and Co. of Glasgow . CATECHISM OF AGRICULTURAL CHEMISTRY AND GEOLOGY . Q. WHAT is.
Side 9
... require food as animals do ? A. Yes , all plants require constant supplies of food in order that they may live and grow . Q. Where do plants obtain their food ? A. They obtain it partly from the air and partly from the soil . Q. How do ...
... require food as animals do ? A. Yes , all plants require constant supplies of food in order that they may live and grow . Q. Where do plants obtain their food ? A. They obtain it partly from the air and partly from the soil . Q. How do ...
Side 10
... require two distinct kinds of food ? A. Yes , they require organic food to support their organic part , and inorganic food to support their in- organic part . Q. Whence do they obtain their organic food ? A. They obtain their organic ...
... require two distinct kinds of food ? A. Yes , they require organic food to support their organic part , and inorganic food to support their in- organic part . Q. Whence do they obtain their organic food ? A. They obtain their organic ...
Side 14
... require only carbon and water to form the woody fibre and starch , of which they con- sist , and therefore they give off the oxygen of the carbonic acid because they cannot make use of it . Q. If plants suck in so much carbonic acid ...
... require only carbon and water to form the woody fibre and starch , of which they con- sist , and therefore they give off the oxygen of the carbonic acid because they cannot make use of it . Q. If plants suck in so much carbonic acid ...
Side 20
... require draining A. Yes , though dry at the surface , such soils are often wet beneath , and would pay well for draining . The teacher may illustrate this , by referring his pupils to what they may see on the sea beach , or on the banks ...
... require draining A. Yes , though dry at the surface , such soils are often wet beneath , and would pay well for draining . The teacher may illustrate this , by referring his pupils to what they may see on the sea beach , or on the banks ...
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...