N.Y. Legislative Law § 38: Subjects to be acted upon

§ 38. Subjects to be acted upon. At an extraordinary session of the

legislature convened pursuant to the provisions of this article, no

subject may be acted upon except such as may be specified in the

perfected joint or concurring petition pursuant to which such session is

convened, or such as may be specified in any perfected joint or

concurring petition received by the temporary president and the speaker

prior to or during such extraordinary session, or such as may be added

to such petition or petitions by amendment thereof by joint resolution

adopted by two-thirds of the members elected to each house.