Catechism of Agricultural Chemistry and Geology |
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Page 18
... practice in his own or the neighbour- ing parishes , and pointing out its advantages or defects . Q. Whence is the inorganic part of the soil de- rived ? A. The inorganic part of the soil is derived from 18 CATECHISM OF AGRICULTURAL.
... practice in his own or the neighbour- ing parishes , and pointing out its advantages or defects . Q. Whence is the inorganic part of the soil de- rived ? A. The inorganic part of the soil is derived from 18 CATECHISM OF AGRICULTURAL.
Page 30
... advantage ? A. Yes , potatoe - tops dug in , or turnip - tops , when the roots are lifted , make the next year's corn better . Potatoe or turnip tops ploughed in make the suc- ceeding barley or wheat crop so much better , that , about ...
... advantage ? A. Yes , potatoe - tops dug in , or turnip - tops , when the roots are lifted , make the next year's corn better . Potatoe or turnip tops ploughed in make the suc- ceeding barley or wheat crop so much better , that , about ...
Page 38
... advantage , under the name of Guano . Q. To what crops can guano be profitably applied ? A. It may be profitably employed as a top - dress- ing to the young corn crops , or it may be used , instead of the whole or of a part of the farm ...
... advantage , under the name of Guano . Q. To what crops can guano be profitably applied ? A. It may be profitably employed as a top - dress- ing to the young corn crops , or it may be used , instead of the whole or of a part of the farm ...
Page 40
... advantage as a top - dressing to grass lands and to young corn . Q. What quantity would you lay upon an impe- rial acre ? A. From 1 cwt . to 14 cwt . to an imperial acre . Q. What is sulphate of soda ? A. Sulphate of soda is the ...
... advantage as a top - dressing to grass lands and to young corn . Q. What quantity would you lay upon an impe- rial acre ? A. From 1 cwt . to 14 cwt . to an imperial acre . Q. What is sulphate of soda ? A. Sulphate of soda is the ...
Page 41
... advantage , with a view of explaining the subject more fully to his pupils , when he shall think it proper to do so . Q. What is kelp ? A. Kelp is the ash that is left when sea - weed is burned in large quantities . Q. Can it be ...
... advantage , with a view of explaining the subject more fully to his pupils , when he shall think it proper to do so . Q. What is kelp ? A. Kelp is the ash that is left when sea - weed is burned in large quantities . Q. Can it be ...
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...