THE COLUMBIAN EXPOSITION". 



97 



house 18^x33 feet. This plant complete, heated, can be built 

 for $6,000. Two other houses were also shown by Lord & 

 Burnham, one a curvilinear greenhouse, 15x30 feet, costing 

 $900 ; the other, a portable house 10x20, costing $400. Hitch- 

 ings & Co. also had two sections of a portable iron-frame green- 

 house in the dome gallery of the Horticultural Building. A 

 villa conservatory was shown upon the lawn by Thomas W. 

 Weathered's Sons, and a portable wood and iron-frame house 

 was erected by the same firm in the south floral curtain of the 

 Horticultural Building. This latter house was 11x27, and can 

 be built, complete, for $575. The glass was set in light sashes, 

 which were bolted and screwed to the framework. John C. 

 Moninger, of Chicago, had a small house, 20x30 feet, upon the 

 lawn, to show the use of cypress lumber in the construction of 

 a house ; and in this house Mr. J. D. Carmody, of Evansville, 

 Indiana, displayed his sectional boiler for hot water, and his 

 New Departure ventilating appliance. The Hellewell system 

 of glazing was shown in a small portable house upon the lawn, 

 built by Mr. H. B. Hardt, of Chicago. This system, which is 

 an English patent and not in use in this country, is a zinc sash 

 bar and cap, the cap being screwed down into the bar in much 

 the same manner as our common wood sash bar and cap for 

 butted glass are used. This system allows of either lapped or 

 butted glass. In the north floral curtain of the Horticultural 

 Building, A. Edgecumbe Rendle & Co. showed two patent 

 systems of glazing, the "Acme" and the "Paradigm." These 

 systems consist in the use of metal sash bars, fitted in such 

 shape that the glass slides into them and is held secure with- 

 out resort to putty. The sash bars are quite independent of 

 the structural framework of the house. The system can be 

 used either upon wood or iron-frame houses, and it is particu- 

 larly adapted to heavy skylights. The Rendle Co. also had 

 two iron skeleton houses upon the lawn to show the method of 

 building iron frames. 



The most novel of the various greenhouse exhibits were 

 the two curious structures made of the Falconnier glass bricks. 

 These bricks are essentially bottles without an opening, and 

 blown in such shapes that they fit well into the designs of the 

 builder. As a rule, the interior hollow is about large enough to 

 hold a quart of liquid. The bricks are generally flattened, but 

 the two broad sides are usually raised into a cone-like shape, in 

 order to present various surfaces to the incident rays of the 

 sun and to break the force of hail and shocks. The narrower 

 sides are two or three inches wide and are trough-shaped to 

 hold the cement or mortar with which the bricks are joined. 

 The bricks are laid by a mason in much the same manner as 



