(1) that nitro-cellulose lacquer which is clear as well as pigmented falls within the purview of Item 14 of the First Schedule to the Central Excise & Salt Act, 1944, and that clear and . • white, or murky and pigmented lacquer is not subject to duty; (2) that a certificate of test issued by the Silk Mills Research Association, Bombay showed that the nitro-cellulose lacquer content of a sample of surface-coating compound produced by the appellant Company was only 4. 7 % and it could not be considered nitro-cellulose lacquer within the meaning of the Act; and (3) that the failure to levy duty on the product from 1955 to 1962 was proof of the fact that the Excise Department was itself of the view that the product was not excisable. The Collector of Customs consulted the Chemical Examiner and was of the view that the opinion expressed by the Silk Mills Research Association, Bombay, was not correct. In considering the question about the reason for not levying duty for nearly seven years, the Collector thought it necessary to give a fresh hearing to the appellant Company. Additional arguments were advanced at the second hearing. After considering the arguments advanced by the appellant Company the Collector wrote a detailed judgment setting out.the "points" on which he held against the claim of the appellant Company, and expressed the view that the appellant Company was not right in contending that only that chemical which is "clear and pigmented" falls within the purview of Item 14 of the First Schedule. Against the order dismissing the appeal, the appellant Company moved a petition invoking the revisional jurisdiction of the Central Government under s. 36 of the Central Excise & Salt Act, 1944. The pe\ition was entertained, but no personal hearing was given to the appellant Company. By order oated July 16, 1966, communicated by the Joint Secretary to the Government of India. Ministry of Finance, the petition was rejected. The order read: "The Government of India have carefully considered the points made by the applicant ( s), but see no justification for interfering with the order in appeal. The revision application is accordingly rejected." Against the order passed by the Central Government this appeal is preferred with special leave.