. Botany of the living plant. Botany. 206 BOTANY OF THE LIVING PLANT Experiments have shown that Leguminous scedhngs grown in sterilised sand, to which a full food-supply exclusive of combined nitrogen has been added, fail from want of nitrogen. Like any other green plants they are unable to use the free nitrogen of the air. But. Fig. 156. Young tubercles {A') on a root {W) of Viiia Faba. Z? = lai-ge-cellcd tisstie filled with masses of Bacteria. 3/ —meristem. 2—tracheides. ( >: 60.) 2, a cell infected with bacteria, and smaller non-infected cells. ( ^ 320.} 3, an infected root-hair. ( 320.
. Botany of the living plant. Botany. 206 BOTANY OF THE LIVING PLANT Experiments have shown that Leguminous scedhngs grown in sterilised sand, to which a full food-supply exclusive of combined nitrogen has been added, fail from want of nitrogen. Like any other green plants they are unable to use the free nitrogen of the air. But. Fig. 156. Young tubercles {A') on a root {W) of Viiia Faba. Z? = lai-ge-cellcd tisstie filled with masses of Bacteria. 3/ —meristem. 2—tracheides. ( >: 60.) 2, a cell infected with bacteria, and smaller non-infected cells. ( ^ 320.} 3, an infected root-hair. ( 320.) 4, Bacterioids. 5, unaltered Bacilli. (xi20o) (.\fter Strasbiirger.) if a water-extract of ordinary soil be made,—especially if the soil has lately grown similar Leguminous plants,—and if it be added to the culture, the plants will thrive with all the evidences of a sufficient nitrogenous supply, while a free development of tubercles takes place upon the roots. Moreover, analysis shows that tlic nitrogenous content of the tuberculous plants is increased by the co-operation of the two organisms. But it is still uncertain how this is done. It. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Bower, F. O. (Frederick Orpen), 1855-1948. London, Macmillan and co. , limited
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1919
