"Nitrogen" Quotes from Famous Books
 ... yield a crop of twenty-five bushels per acre the soil must supply 110 lbs. of nitrogen, 45 lbs. of phosphoric acid, 30.5 lbs. of lime, 14.5 lbs. of magnesia, and 142 lbs. of potash; these are approximately the mineral elements taken out of the soil with each crop, and it is needless ...
— Commercial Geography - A Book for High Schools, Commercial Courses, and Business Colleges • Jacques W. Redway
... thirty years, generaled by the best scientists of all Europe, that it was finally conceded as demonstrated that leguminous plants acting as hosts for lower organisms living on their roots are largely responsible for the maintenance of soil nitrogen, drawing it directly from the air to which it is returned through the processes of decay. But centuries of practice had taught the Far East farmers that the culture and use of these crops are essential to enduring fertility, and so in each ...
— Farmers of Forty Centuries - or, Permanent Agriculture in China, Korea and Japan • F. H. King
... words or images, and no man can tell which is first, or if there is any first in such matters—the thought or the word—any more than the biochemist can tell us which is first in the living body, the carbon, oxygen, nitrogen, and so on, or the living force that weaves itself a corporeal ...
— The Last Harvest • John Burroughs
... envelope of our planet, the atmosphere. Chemical composition of the atmosphere, its transparency, its polarization, pressure, temperature, humidity, and electric tension. Relation of oxygen to nitrogen; amount of carbonic acid; carbureted hydrogen; ammoniacal vapors. Miamata. Regular (horary) changes in the pressure of the atmosphere. Mean barometrical height at the level of the sea in different zones of the earth. Isobarometrical curves. Barometrical ...
— COSMOS: A Sketch of the Physical Description of the Universe, Vol. 1 • Alexander von Humboldt
... that living bodies contain comparatively few elements, but these are combined into extraordinarily complex compounds. The following elements appear to be essential to all living bodies: carbon, hydrogen, oxygen, nitrogen, sulphur, potassium. Besides these there are several others usually present, but not apparently essential to all organisms. These include phosphorus, iron, calcium, sodium, magnesium, ...
— Elements of Structural and Systematic Botany - For High Schools and Elementary College Courses • Douglas Houghton Campbell |
