24 
THE FLORAL WORLD AND GARDEN GUIDE. 
also succeeded in reducing the first cost in construction, without 
any diminution in strength and durability, which is a very important 
matter ; for, unless glass houses are durable, they will be found to 
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[MESSENGER’S HALF-SPAN VINERY OR PEACH HOUSE, 
be very dear, no matter how cheap they may be erected, for they 
will be in constant need of repairs, and not last, perhaps, half so 
long as they should do. 
The chief point in the method of construction of Messrs. Mes- 
senger’s horticultural buildings consists in a combination of wood 
and iron. 
MESSENGER'S SPAN-ROOF PLANT-HOUSE, 
The woodwork is trussed, and carried on an improved 
form of interior iron-work, which takes all the strain off the wood; 
and by this arrangement it is possible to obtain an even greater 
degree of strength with smaller woodwork than is usually employed 
