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(continued).
_2
Although nitrogen compounds are, in
mount, inferior to the free nitrogen, taey are, neverthe less,
of very great importance, sinos the most important constituents
of the vegetable and animal structures are altrogen compounds.
tapecially tas substance of the muscles and the contents of tae cello, tae so called protoplasan, tɔ which the real life
activity is attached, ara aitrogengus. In contradistintion to the elementa ve nave nituerto mentioned elementary mitrɔgan posstabas only in a 7er; bligat úsgree the power of interacting caemically wita otuer substangs5-, It is, therefore, caparacter- Ísed as a onenically inert or indifferent element. To obtala nitrogen compounas one cannot, therefɔre, se a rule, start from nitrɔkan itself, but the dosired substance must be prepared from other nitrogen compounds. If however, tom nitrogen bat paused intʊ comoination, tum quostabuss which abe formed slow a Very considerable variety and power of transformation.
Green plants have the property of giving aff ɔajgen.
Alouminoids all contain nitrogaa.
Low forms of life form squetances which can unite with free nitrogen and oinvert tais into the ombined state. These organisas occur partly alone, ont chiefly in association (gymoissia) wita niener plants, supecially tās papilliɔnavas (lupines, clover,
Tay annat of Desus, þved, in tue roots of whiculaey reside. combined nitrɔgeu ia likewise incremasa by these plants.
-20stwald's Principles of Chemistry,"