(1) The President _296[may with respect to
any State _297[or Union territory], and where it is a State _298***,
after consultation with the Governor _299***thereof,] by public
notification_300, specify the castes, races or tribes or parts of or
groups within castes, races or tribes which shall for the purposes of
this Constitution be deemed to be Scheduled Castes in relation to that
State _301[or Union territory, as the case may be].
(2) Parliament may by law include in or exclude from the list of
Scheduled Castes specified in a notification issued under clause (1)
any caste, race or tribe or part of or group within any caste, race or
tribe, but save as aforesaid a notification issued under the said
clause shall not be varied by any subsequent notification.