After the publication of the above Report, the competition designs were all exhibited in the rooms of the Institution of Civil Engineers, in Great George-street, which were liberally placed at the disposal of the Committee for this purpose; and of those who visited this interesting exhibition, many, no doubt, must have sympathised with those feelings which dictated the decision of the Committee. From an attentive examination of these designs, presenting the subject in such exceedingly varied forms, one of the peculiar difficulties of the case becomes apparent, namely, the total absence of any precedent to guide or afford suggestions to the designer; for the small number of buildings erected or adapted for a similar purpose have been on so limited a scale that their example could not afford much assistance in designing a structure to meet all the requirements of the present case. This building differed from all previous ones in being intended to accommodate the products of all nations, instead of being confined to those of one only; in which case the arrangement would have been more certain and more readily provided for. Buildings used for previous Exhibitions. As a comparison of some of these earlier buildings with the first erected in London for a similar purpose cannot fail to be interesting, a short notice of them may not be deemed out of place. The most important amongst them are those temporary structures which have been erected in Paris for the periodical Industrial Expositions, with reference to the last of which we cannot do better than quote, from Mr. Digby Wyatt's instructive and masterly Report, that part where the building is treated of:-- "The vast edifice which has been erected to contain the specimens of manufacture selected for exhibition in the year 1849 is situated on the same site as that occupied by a similar building in the year 1844. The Carré de Marigny, on which it has been placed, is a large oblong piece of ground, abutting on the main avenue of the Champs Elysées, and as a site offers every possible advantage, being of a gravelly soil, already efficiently drained, and standing on the line of a continually moving series of public conveyances. The Champs Elysées, though at some considerable distance from the great centre of Parisian population, are still so universal a place of resort, that they may be fairly assumed to be "in the way" of even the poorest classes of the community. The elevation may be admirably seen from all the approaches to the building, and it has the advantage of being in immediate proximity to the residence of the President of the Republic. PLAN OF THE BUILDING FOR THE FRENCH EXPOSITION IN 1849. [Illustration] 1. Cattle-shed. 2. Machinery. 3. Chemical Products. 4. Metal Works. 5. Productions of Parisian Industry. 6. Horticulture. 7. Woven Goods. 8. Principal Entrance. 9. Guard-house. 10. Fountain. 11. Reservoir of Rain Water.