Which preposition to use with naturalisation

of Occurrences 2%

To Herbert Spencervery appropriately since his mental characteristics make him the English parallel to Comtewe owe the naturalisation of the word in English.

in Occurrences 1%

The attempt having succeeded, it was wished to follow it up by the naturalisation in the poultry-yard of two other sorts of aquatic birds, namely, the sheldrake (tadorna) and the moorhen, but without success.

Which preposition to use with  naturalisation