It is strange enough, that no public ceremony was thought necessary to mark the real commencement of the most extensive and important building of the time. The first stone was laid privately, by the wife of the architect, on April 27th, 1840. It was very unfortunate, that the site could only be taken possession of gradually, as the old buildings upon it were gradually relinquished by the public bodies occupying them, and that the exigencies of the public service demanded the piecemeal occupation of the various parts of the building, as fast as they were completed. There could be no grand “opening” of the whole building, no opportunity for forming a judgment of its various parts, in their due relation and subordination to one another. Perhaps to this was due the fact, that throughout the whole course of the work there was no public ceremonial to serve as a recognition of its importance, and of the labour and talent bestowed on its design and execution. From April, 1840, the work proceeded with great dispatch, in spite of many peculiar difficulties. The site (as has been said) could not be at once occupied; various alterations were suggested, either by the increase of public requirements, or by the experience gained in the progress of the work. Perhaps the most serious difficulty of all was to be found in the appointment in January, 1840, of Dr. Reid to superintend the warming and ventilating of the building, and the controversies (hereafter to be alluded to) which arose from that appointment. These various causes could not but tend to delay that rapid execution which Mr. Barry had expected, and which the public service required.[70] From this delay arose the first of the many troubles, which beset him in the course of his labours, and which must always, in greater or less degree, be encountered by those who carry out works of great extent and complexity, under public authorities, and with public responsibility.