1958 the Indian Contract Act applied to •te facts of the Sa I es 7. ax O'ffi ctr present case. R . ' • v. c : (1) :-The respondent was assessed for the said MukundJol S•r•f amounts under the U. P. Salrs Tax Act and paid the same ; but these payments were in respect of forward Bhaiwati J. transitctions in silver. If the State of U. P. w&s not entitled to receive the sales tax on these transactions, the provision in that behalf being ultra vircs, that could not avail the State and the amounts were paid by the respondent, even though they were no•; due by contract or otherwise. The respondent committed the mistake in thinking that the monies paid were due when in fact they were not due and that mistake on being established entitled it to recover the same back from the Stat-0 under s. 72 of the Indian Contract A<ot. It was, however, contended that the payments having beon made in discharge of the liability under the U. l'. Sales Tax Act, they were payments of tax and m·cn though the terms of s. 72 of the Indian Co1l'uract Act a pp lied to the facts of the present ca8') no monies paid by way of lax could be recovered. We do not sec any warrant for this proposition within the terms of s. 72 itself. Reliance was, however, plac.,cI on two decisions of the )fadras •High Court reported in (t) Municipal Council, '.I'uticorin v. Balli Brcs. (') and (2) Jfunicipal Council, Rajahmundry v. 8ulba Rao('). lt may be noted, however, that both these decisions proceeded on the basis that the payments of the taxes there were made under mistake of law which as understood then by the ;\laclras High Cour was not within the purview uf s. 72 of the Indian Cor1tract Act. The High Court then proceeded to consider whether they fell within the second pa.rt of s. 72, vi7 . ., w~1ether the monies had been paid under coercion. .The court held on the facts of. those cases tha,t the payments had been volunt,Lrily made and the p1uties paying • the same "were therefore not entitled to reco"-er the same. The voluntary payment was thcie considered in contradistinction to payment under coercion and the. real ratio of 1!he decision8 was that there was no coercion ·or" duress exercised by the authorities for • • • (1) A.LR 1934 ~lad. *20. (2) A.LR 1937 ~lad. 559 .