"A chapel in Liverpool-road, Islington, seventy feet in length and fifty-two feet in breadth, took fire in the cellar, on the 2nd October, 1848, and was completely burned down. After the fire, it was ascertained that of thirteen cast-iron pillars used to support the galleries, only two remained perfect; the greater part of the others were broken into small pieces, the metal appearing to have lost all power of cohesion, and some parts were melted. It should be observed, that these pillars were of ample strength to support the galleries when filled by the congregation, but when the fire reached them, they crumbled under the weight of the timber only, lightened as it must have been by the progress of the fire." In this case it mattered little whether the pillars stood or fell, but it would be very different with some of the large wholesale warehouses in the City, where numbers of young men sleep in the upper floors; in several of those warehouses the cast-iron pillars are much less in proportion to the weight to be carried than those referred to, and would be completely in the draught of a fire. If a fire should unfortunately take place under such circumstances, the loss of human life might be very great, as the chance of fifty, eighty, or one hundred people escaping in the confusion of a sudden night alarm, by one or two ladders, to the roof, could scarcely be calculated on, and the time such escape must necessarily occupy, independent of all chance of accidents, would be considerable. For the reasons here stated, I submit that large buildings, containing considerable quantities of combustible goods, with floors of brick-arches, supported by cast-iron beams and columns, are not, practically speaking, fire-proof; and that the only construction which would render large buildings fire-proof; where considerable quantities of combustible goods are deposited, would be groined brick-arches, supported by pillars of the same material, laid in proper cement. I am fully convinced, from a lengthened experience, that the intensity of a fire,--the risk of its ravages extending to adjoining premises, and also the difficulty of extinguishing it, depend, _caeteris paribus_, on the cubic contents of the building which takes fire, and it appears to me that the amount of loss would be very much reduced, if, instead of building immense warehouses, which give the fire a fortified position, warehouses were made of a moderate size, with access on two sides at least, completely separated from each other by party-walls, and protected by iron-doors and window-shutters. In the latter case, the probability is, that not more than one warehouse would be lost at a time, and perhaps that one would be only partially injured.