Calcutta, Feb. 24 :    Calcutta, Feb. 24:  Prasanta Kumar Ghosh, political scientist and former principal of Maulana Azad College, died on Saturday after a protracted illness. He was 70 and is survived by his wife and two sons. Ghosh had also served as the principal of Hooghly Mohsin College. Jewellery seized: Jewellery and silver biscuits, worth about Rs 11 lakh, were recovered from a luggage van of the Bhubaneshwar Rajdhani Express via Howrah after the train arrived at Howrah station on Saturday morning. No arrests have been made.