Catechism of Agricultural Chemistry and GeologyW. Blackwood, 1844 - 48 páginas |
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James Finlay Weir Johnston. Fig . 1 . Here the teacher will burn a bit of straw or wood in the candle , and show that one part burns away and that another very small part— the ash — does not burn away . Q. Which of these two parts is the ...
James Finlay Weir Johnston. Fig . 1 . Here the teacher will burn a bit of straw or wood in the candle , and show that one part burns away and that another very small part— the ash — does not burn away . Q. Which of these two parts is the ...
Página 1
... burns away in the fire , called the organic part , and one which does not burn away , called the inorganic part . A Fig . 1 . Here the teacher will burn a CATECHISM ...
... burns away in the fire , called the organic part , and one which does not burn away , called the inorganic part . A Fig . 1 . Here the teacher will burn a CATECHISM ...
Página 2
James Finlay Weir Johnston. Fig . 1 . Here the teacher will burn a bit of straw or wood in the can- dle , and show that one part burns and that another very small the ash - does not burn away part away . Q. Which of these two parts is ...
James Finlay Weir Johnston. Fig . 1 . Here the teacher will burn a bit of straw or wood in the can- dle , and show that one part burns and that another very small the ash - does not burn away part away . Q. Which of these two parts is ...
Página 3
... burn . The cork and jet may now be taken out of the bottle , and a lighted taper intro- duced into it , when the taper will be extinguished , while the gas itself will take fire and burn at the mouth of the bottle . Lastly , if the ...
... burn . The cork and jet may now be taken out of the bottle , and a lighted taper intro- duced into it , when the taper will be extinguished , while the gas itself will take fire and burn at the mouth of the bottle . Lastly , if the ...
Página 4
... 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 ex- hibit a bottle of oxygen ...
... 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 ex- hibit a bottle of oxygen ...
Palavras e frases frequentes
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
Passagens conhecidas
Página 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...