[1] He was a well-known barrister who practised at the Calcutta High Court and made his mark in the field of criminal law.

On 24 March 1902, he was elected director of the Bharat Anushilon Samiti set up by Satish Chandra Bose and also took up its financial responsibilities.

The two agreed on the overall line of approach: establish samitis throughout the province, provide training in physical culture, and, when the time was right, introduce revolutionary ideas.

Mitra's writings include a novel, Yogi, Tarkatattva, Jati O Dharma, and History of the Intellectual Progress of India.

Mitra's writings include a novel, Yogi, Tarkatattva, Jati O Dharma, and History of the Intellectual Progress of India.