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Amendment of section 659 (farming: allowances for capital expenditure on the construction of farm buildings etc., for control of pollution) of Principal Act. | 
19.— Section 659 of the Principal Act is amended in subsection (3B)(a) by substituting the following for the definition of “residual amount”: | 
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“ ‘residual amount’, in relation to capital expenditure incurred in a chargeable period, means an amount equal to 50 per cent of that expenditure or— | 
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(i) €31,750, where incurred in a chargeable period ending before 1 January 2006, and | 
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(ii) €50,000, in any other case, | 
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whichever is the lesser;”. |