Catechism of Agricultural Chemistry and GeologyW. Blackwood, 1844 - 48 sider |
Inni boken
Resultat 1-5 av 9
Side 2
... hydrogen ? A. Hydrogen is a 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 ...
... hydrogen ? A. Hydrogen is a 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 ...
Side 2
... hydrogen ? A. Hydrogen is a 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 ...
... hydrogen ? A. Hydrogen is a 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 ...
Side 3
... hydrogen gas produced has driven out all the common air from the bottle , a light may be applied to the jet , when the gas will take fire and burn . The cork and jet may now be taken out of the bottle , and a lighted taper intro- duced ...
... hydrogen gas produced has driven out all the common air from the bottle , a light may be applied to the jet , when the gas will take fire and burn . The cork and jet may now be taken out of the bottle , and a lighted taper intro- duced ...
Side 4
... hydrogen or com- mon air . It forms one - fifth of the bulk of the air we breathe . Fig . 5 . The teacher will here ex- hibit a bottle of oxygen gas , and show how rapidly and brilliantly a lighted taper burns when intro- duced into it ...
... hydrogen or com- mon air . It forms one - fifth of the bulk of the air we breathe . Fig . 5 . The teacher will here ex- hibit a bottle of oxygen gas , and show how rapidly and brilliantly a lighted taper burns when intro- duced into it ...
Side 5
... 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 is a little lighter than atmospheric air , of which it ...
... 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 is a little lighter than atmospheric air , of which 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...