All the houses are constructed with a layer of concrete over the whole area of the site, and a portion of the garden at back. Every room is specially ventilated, and all party walls are hollow in order to prevent the passage of sound. A constant water supply is laid on, there being no cisterns but those to the water-waste preventers to closets. All water pipes discharge over open trapped gullies outside. The materials used are red and yellow bricks, with terracotta sills, the roofs being slated over the greater part, and for the purpose of forming an agreeable relief, the end houses, and in some cases the central houses, have red tile roofs, the roofs over porches being similarly treated. The houses are simply but effectively designed, and the general appearance of the finished portion of the estate is bright and cheerful. All end houses of terraces have been specially treated, and in some cases having rather more accommodation than houses immediately adjoining, a slightly increased rental is required. There are five different classes of houses. The first class houses (which we illustrate this week) are built on plats having 16 ft. frontage by 85 ft. depth, and containing eight rooms, consisting of two sitting rooms, kitchen, scullery, with washing copper, coal cellar, larder, and water-closet on ground floor, and four bedrooms over. The water-closet is entered from the outside, but in many first-class houses another water-closet has been provided on the first floor, and one room on this floor is provided with a small range, so that if two families live in the one house they will be entirely separated. The rental of these houses is about 11s. to 11s. 6d. per week. Mr. Rowland Plumbe, F.R.I.B.A., of 13 Fitzroy Square, W., is the architect.--_Building and Engineering Times_. * * * * * ENLARGING ON ARGENTIC PAPER AND OPALS. By A. GOODALL. [Footnote: Read before the Dundee and East of Scotland Photographic Association.] The process of making gelatino bromide of silver prints or enlargements on paper or opal has been before the public for two or three years now, and cannot be called new; but still it is neither so well known nor understood as such a facile and easy process deserves to be, and I may just say here that after a pretty extensive experience in the working of it I believe there is no other enlarging process capable of giving better results than can be got by this process when properly understood and wrought, as the results that can be got by it are certainly equal to those obtainable by any other method, while the ease and rapidity with which enlarged pictures can be made by it place it decidedly ahead of any other method. I propose to show you how I make a gelatino bromide enlargement on opal.