ArrENDix. 117 



concrete, sixteea inches thick, solid as scone, onlj about 

 $i50. 



Without illustrations we can scarcely give a working 

 plan of the house, but we may present such a descrip- 

 tion of the border as will serve to convey a pretty good 

 idea of it. 



The box or pit, into which the soil is placed, is con- 

 structed of brick-work, resting upon a concrete bottom. 

 This concrete bottom is so bevelled as to throw the 

 drainage into a channel constructed on one side, to 

 carry off excess of water. Bricks are then set on edge, 

 eight and a half inches apart, running in lines from 

 the front of the house towards the back, and commenc- 

 ing four inches from the front wall, forming a set of 

 piers, as it were, for the bottom of the pit to rest upon, 

 and also forming tubes, or air chambers under the pit, 

 for air to pass freely. The bottom of the pit is now 

 laid with dry brick-work upon these lines or piers of 

 brick, set on edge, being just the length of one brick 

 apart. As soon as the bottom of the pit was thus laid, 

 we built a wall of brick four inches thick, (the width of 

 one brick,) four inches from the front wall of the house, 

 to the height of two feet. We then divided the pit 

 into sections of two feet, by erecting walls of brick set 

 on edge, from the front to the back of the pit, of the 

 same height as the front wall, making fifty sections or 

 divisions in one hundred feet. After this, we finished 

 the inside of the pit with boards, leaving a passage of 

 four inches open to the air chambers below, so that the 



