XAVIER HOMMAIRE DE HELL,

CIVIL ENGINEER,
MEMBER OF THE SOCIETE GEOLOGIQUE OF FRANCE, AND KNIGHT OF THE ORDER
OF ST. VLADIMIR OF RUSSIA.

WITH ADDITIONS FROM VARIOUS SOURCES.

LONDON:
CHAPMAN AND HALL, 186, STRAND.
MDCCCXLVII.

C. WHITING, BEAUFORT HOUSE, STRAND.