The Mayor, City Comptroller, and Director of Finance, annually or as much oftener as they may deem expedient, shall inspect the schools of the Institute and the condition and the manner in which the terms of the contract are being fulfilled by the Institute. If the Director of Finance is satisfied that the contract is being faithfully observed, he shall pay the Institute annually, in installments on the 1^st days of October and February, such sums as equal the tuition charges computed under <cite data-path="|18|§2-6">§ 2-6 of this subtitle</cite>, but the payment in any instance shall not exceed a sum equal to ½ of the appropriation included in the Ordinance of Estimates for that year. All sums shall be used for the education of the said students as above provided and for no other purpose whatsoever. City Code, 1927, art. 41, §66 1950, art. 32, §17 1966, art., §11 1976/83, art. 24, §12 Ord. 00-074 Ord. 08-115 Ord. 65-686