Calcutta, Aug. 22 :     Poet Arun Mitra died at his south Calcutta residence early on Tuesday of a cardiac failure. Mitra, 92, was a widower. He is survived by two children. The poet was suffering from prolonged geriatric ailments and had just recovered from a femur fracture before his death, family sources said. Mitra's last wish was that his body be donated to the anatomy department of NRS Medical College and Hospital.