Judgment

HEGDE, J.:- These are appeals by special leave. The first two appeals, namely, Civil Appeals Nos. 2215 and 2216 of 1969 arise from the decision of the Mysore High Court in two Writ Petitions filed by a dealer in hides and skins whereas the third appeal, namely, Civil Appeal No. 2217 of 1969, arises from the judgment of the same Court in a Sales-tax Revision Petition. In all these petitions the only question that arises for decision is whether Rule 39A of the rules framed under the Mysore Sales-tax Act, 1957, is ultra vires the rule making power.

2. Section 15 of the Central Sales Tax Act, 1956, provides thus:

"Every sales tax law of a State shall, in so far as it imposes or authorises the imposition of a tax on the sale or purchase of declared goods, be subject to the following restrictions and conditions, namely:

(a) the tax payable under that law in respect of any sale or purchase of such goods inside the State shall not exceed three per cent of the sale or purchase price thereof, and such tax shall not be levied at more than one stage;

(b) where a tax has been levied under that law in respect of the sale or purchase inside the State of any declared goods and such goods are s