Which preposition to use with emasculate

in Occurrences 2%

The staff of authority does not annihilate their sex; and scruples of female delicacy interfere for ever to unnerve and emasculate in their hands the sceptre however otherwise potent.

to Occurrences 2%

The striking increase in legislation that aims to restrict unlawful or improper practices in business, the awakening of the public conscience, has caused a greater demand than ever for influence at the national capital, for these restrictive measures must be either killed or emasculated to a point of uselessness by that process which is the salvation of many a corrupt manipulator, the process of amendment.

into Occurrences 1%

His descent demands excitement and activity; and unless he becomes emasculated into a clay-eater, he obtains the excitement that his ancestors got in war, and the New-Englander gets in work, in gaming, horse-racing, and all manner of dissipation.

Which preposition to use with  emasculate