The Elements of Agriculture: A Book for Young Farmers, with Questions Prepared for the Use of SchoolsD. Appleton, 1854 - 288 Seiten |
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Seite 12
... become air , and hence we conclude that it was originally obtained from air . The inorganic matter has become earth , and was obtained from the soil . This knowledge can do us no good except by the assistance of chemistry , which ...
... become air , and hence we conclude that it was originally obtained from air . The inorganic matter has become earth , and was obtained from the soil . This knowledge can do us no good except by the assistance of chemistry , which ...
Seite 13
... becomes char- coal . All plants contain this substance , it forming Is organic matter lost after combustion ? Of what does it consist ? How large a part of plants is carbon usually about one half of their dry weight . The THE PLANT . 13.
... becomes char- coal . All plants contain this substance , it forming Is organic matter lost after combustion ? Of what does it consist ? How large a part of plants is carbon usually about one half of their dry weight . The THE PLANT . 13.
Seite 18
... becomes necessary for us to consider the means by which it is formed . Carbon , by the aid of fire , is made to Explain the condition of different latitudes . Does the proportion of carbonic acid in the atmosphere remain about the same ...
... becomes necessary for us to consider the means by which it is formed . Carbon , by the aid of fire , is made to Explain the condition of different latitudes . Does the proportion of carbonic acid in the atmosphere remain about the same ...
Seite 20
... becomes a permanent stock of constantly changeable material , until it shall be locked up for a time , as in a house which may last for centuries , or in an oak tree which may stand for thousands of years . Still , at the decay of ...
... becomes a permanent stock of constantly changeable material , until it shall be locked up for a time , as in a house which may last for centuries , or in an oak tree which may stand for thousands of years . Still , at the decay of ...
Seite 21
... become melted carbon , and to flow around those bodies which still retained their shapes , changing them to coal without destroying their structures . This coal , so long as it retains its present form , is lost to the vegetable kingdom ...
... become melted carbon , and to flow around those bodies which still retained their shapes , changing them to coal without destroying their structures . This coal , so long as it retains its present form , is lost to the vegetable kingdom ...
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Häufige Begriffe und Wortgruppen
absorbent agricultural alkali ammonia amount analysis animal manures applied ashes become bones burning bushels carbonic acid causes CHAPTER character charcoal chemical chloride of lime chlorine clay compost compound condition consists constituents cultivation decay decomposed decomposition deficient deposited depth drains dung earth effect escape evaporation excrements farmer farming fertilizing gases fertilizing matter grain growth guano heap heat hydrogen important improved inches ingredients inorganic kinds land large quantities leaching lime and salt liquid manure magnesia Mapes mechanical mechanical character mineral manures mineral matter moisture mulching necessary night soil nitric acid nitrogen nure obtain organic manures organic matter oxygen particles phosphate of lime phosphoric acid plaster potash prepared muck prevent produce pulverized rains removed render roots of plants salt mixture sand silica slaked slaked lime soda soils contain soluble straw sub-soil plow substances sufficient sulphuric acid super-phosphate of lime supply surface soil tain tion under-draining valuable weeds
Beliebte Passagen
Seite 148 - It is not necessary that*-4his and the foregoing table should be learned by the scholar, but they will be found valuable for reference by the farmer. MANURES. Example 1. — Required, the number of loads necessary to manure an acre of ground, dividing each load into six heaps, and placing them at a distance of 44 yards from each other ? The answer by the table is 39f . Example 2.
Seite 235 - ... the sub-soil plow, by passing through it, opens a passage for water, and often affords a sufficient drainage. If plants will grow better on a soil six inches deep than on one of three inches, there is no reason why they should not be benefited in proportion, by disturbing the soil to the whole depth to which roots will travel—even to a depth of two feet.