The Technical World Magazine, Volume 19Technical World Company, 1912 |
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Page 586
WHEN SCIENCE STUDIES THE SOILS By ROBERT FRANKLIN Do you know what your blood pressure is ? Do. WEIGHING SOIL FOR POT EXPERIMENTS PUTTING UP SAMPLES OF SOILS AT THE BUREAU OF SOILS. F an average farmer were asked how many different kinds of ...
WHEN SCIENCE STUDIES THE SOILS By ROBERT FRANKLIN Do you know what your blood pressure is ? Do. WEIGHING SOIL FOR POT EXPERIMENTS PUTTING UP SAMPLES OF SOILS AT THE BUREAU OF SOILS. F an average farmer were asked how many different kinds of ...
Page 588
... SOILS BEING DRIED BY VACUUM PROCESS ter is continually changing . Every time a field is plowed or rain falls , the struc- ture of the soil undergoes alteration . The principal ingredient of nearly all soils is quartz , or silica , which ...
... SOILS BEING DRIED BY VACUUM PROCESS ter is continually changing . Every time a field is plowed or rain falls , the struc- ture of the soil undergoes alteration . The principal ingredient of nearly all soils is quartz , or silica , which ...
Page 589
... soils , limestone soils , shale soils . But a given kind of rock does not always yield the same kind of soil ; climatic and other in- fluences may modify . Since time immemorial color has been regarded as an index to the character of the ...
... soils , limestone soils , shale soils . But a given kind of rock does not always yield the same kind of soil ; climatic and other in- fluences may modify . Since time immemorial color has been regarded as an index to the character of the ...
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