TO MEET the popular demand for a well built, low cost, and convenient conservatory is a difficult matter. The writer's ambition to possess such a structure, say sixteen feet long and eight wide, built against the house, was almost entirely destroyed when a greenhouse construction company estimated the cost at $300, exclusive of foundations and heating apparatus! However, a reliable carpenter was found who would build a piazza extension at $4.50 per running foot, eight feet wide, exclusive of the shingle roof, but with rafters two by four inches, fifteen inches apart. This was with pillars, rails, etc., in keeping with an original piazza, and with a two-inch Georgia pine floor to better resist the results of continual dampness. The under side of the floor joists was sheathed with builder's paper and rough boards, thus making an air chamber to resist cold, as the piazza is elevated two feet from the ground.

Cost of piazza, $72.

By calling on one of the wholesale glass dealers whose advertisement has appeared in The American Garden, the. cost of the necessary quantity of first-quality, double-thick French glass for the roof was found to be $15. The cost of inserting glass was $7, and the method employed was to bed the glass in best white lead putty (no putty on top), and then by the use of an oil can, a stream of white lead and oil was poured along the line where glass and rafter meet. On this was thickly sprinkled sand, and the result was a cemented edge which should last for years without leakage. The late Peter Henderson often declared that this simple process had saved him thousands of dollars in repairs.

The enclosure of sides and ends was effected by the use of removable sashes, running from floor to rafter plate, say eight feet long and two and a half wide, with glass beginning three feet from floor end, and in panes 2½x2 feet. The sashes were tongued and grooved, and were held in place by buttons at the top and strips of wood at the bottom. Cost of sash, $3.50 each, or $35. Cost of door, with glass in upper portion, $3.50. Benches, water connection and incidentals, brought the total cost to $150 for a house for which over $300 was asked. Now for the heating. A $37 self-feeding hot-water boiler was purchased, capable of heating 100 feet 4-inch pipe. Only 90 feet of pipe was necessary ; price, 12 cents per foot, or S47.50 tor boiler and pipes. Cost of connections, including expansion tank, elbows, branches, etc., was $18. The boiler was placed in the cellar, and connection made with the conservatory through the foundation wall. All the necessary connecting work was easily done without the aid of the plumber.

Total cost of the heating arrangement was $65.50, and the house, including painting, was completed for $235.

The pipes are supplied with "unions," and can be taken apart and away at short notice; the benches are on horses, and with the removable sashes can be quickly removed and stored, when the conservatory becomes again in appearance, an ordinary piazza with a glass roof. Thus in summer, by putting an awning over the glass roof, the residence itself is not heated, nor are the breezes denied free entrance on account of the serviceable, practicable conservatory, which on the approach of cold weather, can be made quickly and easily to materalize, and to become a source of occupation, beauty, pleasure and profit during the long winter months.

New Jersey. H.