PLATE XVIII. 
A green house of the Doric order, and the elevation of the Plan in the last Plate, its internal 
disposition shewn in the right-hand section of the following one. The piers, are ornamented with 
rustic semi-columns, placed on a sub-plinth, and are each in width, one half the breadth of the 
arch, which is double the breadth in height. The entablature is contracted, by omitting the 
architrave, to lessen the dead work, and admit as much light as possible : the tread of the steps is 
thirteen inches, and their rise six; at the height of the three, a basement surrounds the building. 
The roof is pointed and glazed on both sides, and at the ends. 
