Anushilan Samiti
Anushilan Samiti (Ōnūshīlōn sōmītī, "lit": body-building society) was a Bengali Indian organisation that existed in the first quarter of the twentieth century, and propounded revolutionary violence as the means for ending British rule in India. The organisation arose from a conglomeration of local youth groups and gyms ("Akhara") in Bengal in 1902. It had two prominent, if somewhat independent, arms in East and West Bengal identified as Dhaka Anushilan Samiti centred in Dhaka (modern day Bangladesh), and the Jugantar group (centred at Calcutta) respectively.
Bhavabhushan Mitra
In 1900, invited by Suren at his Kolkata residence, Jatin and Bhavabhushan attended a meeting where Kakuzo Okakura, the Japanese dreamer of the movement "Asia is One," was presented to dignitaries like Sister Nivedita, the barrister P. Mitter, Shashibhushan Raychaudhury including members of the Tagore family (Sarala Devi Tagore, Rabindranath, Abanindranath Tagore). Like other patriots, too, Bhavabhushan was to be impressed by the Japanese victory over Russia in 1905, and admired Japan as an Asiatic power. Even in 1937, as a tribute to the Japanese admiral, he christened one of Jatin's grandsons as Togo. At Kolkata, Bhavabhushan noticed young Jatin's popularity among the seasoned personalities. Especially he found Mitter encouraging Jatin in his mission of preparing youths for an extremist uprising against the colonial rulers. As soon as the Kolkata Anushilan Samiti was inaugurated in 1902, with the help of Bhavabhushan and other associates, Jatin opened its branches in Kushtia and neighbouring towns. As Jatin's messengers, on several occasions Bhavabhushan and Chandi Majumdar used to meet Sarala Devi, Nivedita, P. Mitter, Bipin Chandra Pal, Krishnakumar Mitra.