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ELEMENTS

OF

AGRICULTURAL CHEMISTRY,

&c.

ELEMENTS

OF

AGRICULTURAL

CHEMISTRY AND GEOLOGY.

BY

JAMES F. W. JOHNSTON, M.A., F.R.S.,

HONORARY MEMBER OF THE ROYAL ENGLISH AGRICULTURAL SOCIETY,
AND AUTHOR OF “ LECTURES ON AGRICULTURAL

CHEMISTRY AND GEOLOGY,

WILLIAM BLACKWOOD AND SONS,

EDINBURGH AND LONDON.

MDCCCXLII.

472.

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