Clauses (ix) and (xv) of this subsection are as follows : "(ix) any sums paid on account of land revenue, local rates or municipal taxes in respect of such part of the premises as is used for the purpose of the business, profession or vocation." "(xv) any expenditure not being an allowance of the nature described in any of the clauses (i) to (xiv) inclusive, and not being in the nature of capital expenditure or personal expenses of the assessee laid out or expended wholly and exclusively for the purpose of such business, profession or vocation." Sub section (4) of section 10 to the extent It is material is in the following terms : 513 (4) Nothing in clause (ix) or clause (xv) of subsection (2) shall be deemed to authorise the allowance of any sum paid on account of any cess, rate or tax levied on the profits or gains of any business, profession or vocation or assessed at a proportion of or otherwise on the basis of any such profits or gains The essential question that has to be determined is whether the cesses levied under the aforesaid Bengal Acts fell within the mischief of section 10(4) of the Act.