In 1870, the Watt Institution was forced to move following the demolition of Adam Square. After a brief period on Roxburgh Place, it relocated to the newly constructed Chambers Street near where its former site had stood. The move caused the Institution severe financial difficulties, which were compounded by a combination of declining funds from subscribers and increased costs from its growing student body. In 1873, the Directors turned to George Heriot's Trust for support, and agreed to a merger of the Trust's endowment with the Institution's own. The proposed merger was provisional to changes in the structure of the Watt Institution, which would see the organisation become a technical college with representatives of the Trust in management positions. Accepting these changes, the Watt Institution officially became Heriot-Watt College in 1885, and was subsequently on far firmer financial ground.