S. 45 : Capital gains – Sale of shares held as investment – Indexed cost of acquisition – Cannot be assessed as business income – Issue of bonus shares is held to be justified – Sale of shares at cost – Short term capital loss allowable to be set off against long term capital gains-Transaction cannot be held to be colourable device to set off the long term capital gains- Loss was allowed to be set off . [ S. 28(i) , 70, 71 ]