Catechism of Agricultural Chemistry and Geology |
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Page 36
... ammonia ? A. Ammonia is a kind of air which has an ex- ceedingly strong smell , -that of the hartshorn of the shops , and which is absorbed by water in large quantities . Here the teacher may exhibit a bottle of hartshorn or of smelling ...
... ammonia ? A. Ammonia is a kind of air which has an ex- ceedingly strong smell , -that of the hartshorn of the shops , and which is absorbed by water in large quantities . Here the teacher may exhibit a bottle of hartshorn or of smelling ...
Page 37
... ammonia is escaping in the form of gas . Q. What does ammonia consist of ? A. Ammonia consists of the two gases , nitrogen and hydrogen . Q. How does this ammonia enter into the roots of plants , when it is formed in the manure ? A. It ...
... ammonia is escaping in the form of gas . Q. What does ammonia consist of ? A. Ammonia consists of the two gases , nitrogen and hydrogen . Q. How does this ammonia enter into the roots of plants , when it is formed in the manure ? A. It ...
Page 38
... ammonia which might be employed in a similar way ? A. Yes , the ammoniacal liquor of the gas - works , diluted with four or five times its bulk of water , should be collected and employed in the same way as the liquid manure of the farm ...
... ammonia which might be employed in a similar way ? A. Yes , the ammoniacal liquor of the gas - works , diluted with four or five times its bulk of water , should be collected and employed in the same way as the liquid manure of the farm ...
Page 39
... ammonia which will come off . Or he may hold over it a rod or feather dipped in vinegar , and show the white fumes . If he have no guano , he may use a little sal - ammoniac instead ; and may explain that quicklime will , in the same ...
... ammonia which will come off . Or he may hold over it a rod or feather dipped in vinegar , and show the white fumes . If he have no guano , he may use a little sal - ammoniac instead ; and may explain that quicklime will , in the same ...
Common terms and phrases
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
Popular passages
Page 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...