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PROCEEDINGS
OF THE
ROYAL SOCIETY OF LONDON.
From November 16, 1871, to June 20, 1872.
VOL. XX.
LONDON:
PRINTED BY TAYLOR AND FRANCIS,
RED LION COURT, FLEET STREET.
XLCCCLXXII.
PROCEEDINGS
OF THE
ROYAL SOCIETY OF LONDON.
From November 16, 1871, to June 20, 1872.
VOL. XX.
LONDON:
PRINTED BY TAYLOR AND FRANCIS,
RED LION COURT, FLEET STREET.
XLCCCLXXII.