 It then built its own headquarters at Spring Gardens (which became a metonym for the MBW), designed by its first chief architect Frederick Marrable and built in an Italianate style in 1859.When John Thwaites died (8 August 1870), he was eventually replaced by James Macnaghten Hogg, later Lord Magheramorne, who remained Chairman until the MBW was abolished.There was an increase in the membership to 59 in 1885 when some district boards were divided and others were given more members.