Catechism of Agricultural Chemistry and Geology |
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Page 17
... dung and remains of animals and insects of va- rious 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 ...
... dung and remains of animals and insects of va- rious 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 ...
Page 28
... dung . Q. Then the farmer can really afford to put as much upon his land as he takes off , and yet have a profit ? A. He can . He puts in what is cheap , and takes off what is dear . The teacher may avail himself of this occasion to ...
... dung . Q. Then the farmer can really afford to put as much upon his land as he takes off , and yet have a profit ? A. He can . He puts in what is cheap , and takes off what is dear . The teacher may avail himself of this occasion to ...
Page 31
... dung . Q. In what form is straw used as a manure ? A. Straw in some places is given to the cattle- in other places it is partly given to the cattle and partly trodden among the litter - while in places again , where few cattle are kept ...
... dung . Q. In what form is straw used as a manure ? A. Straw in some places is given to the cattle- in other places it is partly given to the cattle and partly trodden among the litter - while in places again , where few cattle are kept ...
Page 32
... dung - and it is in many parts of the country applied with great profit as a top - dressing to the young wheat in spring . Q. What are the most important animal manures ? A. The blood , flesh , bones , hair , wool , and the dung and ...
... dung - and it is in many parts of the country applied with great profit as a top - dressing to the young wheat in spring . Q. What are the most important animal manures ? A. The blood , flesh , bones , hair , wool , and the dung and ...
Page 34
... dung are most com- monly employed as manure ? A. Night - soil , horse - dung , cow 34 CATECHISM OF AGRICULTURAL.
... dung are most com- monly employed as manure ? A. Night - soil , horse - dung , cow 34 CATECHISM OF AGRICULTURAL.
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...