JORHAT, Feb 26: The 160th death anniversary of Maniram Dewan was observed by the Assam Chamber of Commerce at Mukti Judha Bhavan auditorium, which was presided over by Rupam Goswami, the president of Assam Chamber of Commerce, Jorhat unit, on Monday. Dr. Pradip Baruah, writer-cum-tea scientist from Jorhat Tocklai Tea Research Institute, during his chief guest address, said the Maniram Dewan was the first professiol tea planter who dared to surprise the Britishers with his innovative ideas for tea business. One of his gardens was traced at Safrai, known to be Singlow Tea Estate, between the triangular border of Assam, Aruchal Pradesh and galand while the other, Cinmora Tea Estate, is currently owned by the Assam Tea Corporation Ltd. He was also the founder of modern economics through tea plantation.