LONGMANS, GREEN AND CO.,
LONDON, NEW YORK, TORONTO, BOMBAY, CALCUTTA, AND MADRAS.
THE MICRO-ORGANISMS
OF THE SOIL
BY
Sir E. JOHN RUSSELL, F.R.S.
AND
MEMBERS OF THE BIOLOGICAL STAFF OF THE
ROTHAMSTED EXPERIMENTAL STATION
WITH DIAGRAMS
LONGMANS, GREEN AND CO.
39 PATERNOSTER ROW, LONDON, E.C. 4
NEW YORK, TORONTO
BOMBAY, CALCUTTA and MADRAS
1923
Made in Great Britain