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 30
... potash , soda , lime and magnesia . POTASH . When we pour water over wood ashes it dissolves the potash which they contain , and carries it through Is the character of a compound the same as that of its con- st uents ? Give an instance ...
... potash , soda , lime and magnesia . POTASH . When we pour water over wood ashes it dissolves the potash which they contain , and carries it through Is the character of a compound the same as that of its con- st uents ? Give an instance ...
Seite 31
... potash may be made . Potash left ex- posed to the air absorbs carbonic acid and becomes carbonate of potash , or pearlash ; if another atom of carbonic acid be added , it becomes super - carbonate of potash , or salæratus . Potash has ...
... potash may be made . Potash left ex- posed to the air absorbs carbonic acid and becomes carbonate of potash , or pearlash ; if another atom of carbonic acid be added , it becomes super - carbonate of potash , or salæratus . Potash has ...
Seite 32
... potash in its agricultural character . Its uses are the same as those of potash - before enumerated . Soda exists very largely in nature , as it forms an important part of common salt , whether in the ocean or in those in- land deposits ...
... potash in its agricultural character . Its uses are the same as those of potash - before enumerated . Soda exists very largely in nature , as it forms an important part of common salt , whether in the ocean or in those in- land deposits ...
Seite 36
... potash , silicate of soda , etc. , which are soluble in water , and therefore What is sulphuric acid composed of ? What is plaster ? What is silica ? Why is it necessary to the growth of plants ? What compounds does it form with ...
... potash , silicate of soda , etc. , which are soluble in water , and therefore What is sulphuric acid composed of ? What is plaster ? What is silica ? Why is it necessary to the growth of plants ? What compounds does it form with ...
Seite 37
... potash , ren- dered insoluble by additions of arsenic and litharge . Liebig tells us that some persons discovered , between Manheim and Heidelberg in Germany , a mass of melted glass where a hay - stack had been struck by lightning ...
... potash , ren- dered insoluble by additions of arsenic and litharge . Liebig tells us that some persons discovered , between Manheim and Heidelberg in Germany , a mass of melted glass where a hay - stack had been struck by lightning ...
Andere Ausgaben - Alle anzeigen
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.