Catechism of Agricultural Chemistry and GeologyW. Blackwood, 1844 - 48 sider |
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Side
... kind of knowledge on which its prosperity must so greatly depend . Few of your pupils will then es- cape from your hands so early as not to have al- ready learned what may enable them on some spot or other in after life , " to make two ...
... kind of knowledge on which its prosperity must so greatly depend . Few of your pupils will then es- cape from your hands so early as not to have al- ready learned what may enable them on some spot or other in after life , " to make two ...
Side 2
... kind of air or gas which burns in the air as coal gas does , but in which a candle will not burn , nor an animal live , and which , after being mixed with common air , explodes when it is brought near the flame of a candle . It is also ...
... kind of air or gas which burns in the air as coal gas does , but in which a candle will not burn , nor an animal live , and which , after being mixed with common air , explodes when it is brought near the flame of a candle . It is also ...
Side 2
... kind of air or gas which burns in the air as coal gas does , but in which a candle will not burn , nor an animal live , and which , after being mixed with common air , explodes when it is brought near the flame of a candle . It is also ...
... kind of air or gas which burns in the air as coal gas does , but in which a candle will not burn , nor an animal live , and which , after being mixed with common air , explodes when it is brought near the flame of a candle . It is also ...
Side 4
... kind of air , in which a candle burns with great brilliancy , in which animals also can live , and which is heavier than hydrogen or com- mon air . It forms one - fifth of the bulk of the air we breathe . Fig . 5 . The teacher will here ...
... kind of air , in which a candle burns with great brilliancy , in which animals also can live , and which is heavier than hydrogen or com- mon air . It forms one - fifth of the bulk of the air we breathe . Fig . 5 . The teacher will here ...
Side 5
... kind of air differing from both of the other two . Like hydrogen , a taper will not burn nor will an animal live in it , but unlike hy- drogen , it will not burn , and it does not take fire when brought near the flame of a candle . It ...
... kind of air differing from both of the other two . Like hydrogen , a taper will not burn nor will an animal live in it , but unlike hy- drogen , it will not burn , and it does not take fire when brought near the flame of a candle . It ...
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...