Which preposition to use with pachyderm

of Occurrences 2%

They adore his supreme skill in thrusting the irritating lancet of his humour into bulging excrescences on the flank of that monstrous pachyderm of Europe, the German.

from Occurrences 1%

Agonised yells to the gentleman who guided the deliberate steps of the pachyderm from a coign of vantage on the back of his neck, awoke him to an appreciation of the situation.

Which preposition to use with  pachyderm