42(7)Subject to subsection (8), where land held as security is expropriated in part or is injuriously affected a security holder is entitled to be paid, to the extent possible in accordance with his priority, out of the market value portion of the compensation and any damages for injurious affection therefor, as the case may be, a sum that is in the same ratio to such portion of the compensation and damages as the balance outstanding on the security at the date of the expropriation or injurious affection is to the market value of the entire land, but the sum so determined shall be reduced by the amount of any payments made to the security holder by the owner after the date of expropriation or injurious affection.