All these arrangements will readily be understood by a reference to the plan of the design we have been describing, which plan, together with a view taken from the south-east angle of the building, will place before the reader the result of the labours of the Committee. The materials proposed for the construction of this building were fire-proof throughout, with the exception of the floor and its supporting timbers. The above design, at least in all its leading features, for some of the details were subsequently added, was laid before the Royal Commission, at the same time with the Report already quoted, and was by them approved, and the Committee proceeded to prepare the necessary working-drawings and specifications for the execution of the work. These proceedings of the Committee occupied until the 24th of June, when large lithographed copies of the most important of the drawings, together with printed copies of the specifications and other details, were issued from the offices of the Executive, contractors having been some time previously invited by public advertisement to send in tenders for the execution of either a part or the whole of the work. The tenders were to be on two systems, one on the supposition that the Royal Commission were to become the _bona fide_ purchasers of the building; the other, that the contractors were to erect and maintain the building during the time of the Exhibition, after which they were to remove it and take back the materials at their own risk, receiving a proportionably diminished sum. It has been considered necessary to describe thus minutely the labours of the Committee and the design in which they resulted, in order to show how far it paved the way for that which was subsequently adopted, and to give them that credit which they undoubtedly deserve for devoting so much of their valuable time for the furtherance of a great public undertaking. Opposition to this Design.