By this Act substantially three provisions are made: (1) that compensation for acquisition of lignitebearing lands under the Land Acquisition Act as amended, is to be assessed on the market value of the land prevailing on April 28, 1947, and not on the date on which the notification is issued under section 4(1) of the Land Acquisition Act; 939 (2) power is reserved under section 17 of the Land Acquisition Act to take possession in cases of urgency of lands for the purpose of working lignite mines in the areas in which the Madras Lignite (Acquisition of Land) Act XI of 1953 extends; and (3) in assessing the market value of the land on April 28, 1947, value of any non agricultural improvements on the land commenced, made or effected after that date are not to be taken into account, even if such improvements were made before the date of publication of the notification under section 4(1) of the Land Acquisition Act.