The Constitution Act of 1935 (Government of India Act, 26 ( 'Teo. 5, Ch. 2) which envisaged a federal constitution for the whole of India, including what was then Indian India in contradistinction to British India, which could not be fully implemented and which also introduced full provincial autonomy enacted section 297 prohibiting certain restrictions on internal trade in these terms: " 297. (1) No Provincial Legislature or Government shall (a) by virtue of the entry in the Provincial Legislative List relating to trade and commerce within the Province, or the entry in that list relating to the production, supply, and distribution of commodities, have power to pass any law or take any executive action prohibiting or restricting the entry into, or export from the Province of goods of any class or description ; or (b) by virtue of anything in this Act have power to impose any tax, cess, toll or due which, as between goods manufactured or produced in the Province and similar goods not so 'manufactured or produced, discriminates in favour of the former, or which, in the case of goods manufactured or produced outside the Province, discriminates between goods manufactured or produced in one locality and similar goods manufactured or produced in another locality.