(1) Whenever any land is acquired under section 7 or 9 there shall be paid compensation the amount of which shall be determined by the Compensation Officer, in accordance with the principles set out in clauses first, second and third of sub section (1) and sub section (2) of section 23 of the Land Acquisition Act, 1894: Provided that the market value referred to in clause first of the said sub section shall be deemed to be the market value of such land on the date of publication of the notice under section 7 or 9, as the case may be, or on the first day of September, 1939, whichever is less: 365 Provided further that where such land has been held by the owner thereof under a purchase made before the first day of April, 1948, but after the first day of September, 1939, by a registered document, or a decree for pre emption between the aforesaid dates, the compensation shall be the price actually paid by the purchaser or the amount on payment of which he may have acquired the land in the decree for pre emption, as the case may be.