sentences:  Dr. Patrick Moore also paid another visit to the Observatory in connection h a highly successful meeting of Scottish societies affiliated to the B.A.A., hosted by the Dundee society - one of a continuing series of astronomical meetings held at the Observatory.The following year saw the inauguration of great changes at the Observatory, the net result of which improved the structure and facilities in a marked way the installation of central heating, the re-surfacing of the balcony, the general redecoration of the whole building, and the upgrading of the lecture-room to an audio-visual theatre with carpeted flooring.This, together with the development of the display area and sales section, was made possible by a grant from the Scottish Tourist Board, and meant the greatest upheaval since the Observatory was built.