180 ON PLANTING AND MANAGING 



of the bottom into as many equal portions or breadths 

 as shall be equal to the number of vines intended to be 

 planted. 



Thus, if the vines are to be planted four feet apart, 

 draw a line from the front to the back, that distance in 

 the clear from one of the end walls, and on this line 

 run up a wall to such a height that the surface of the 

 top of it shall range exactly even with that of the set- 

 off in the main walls. This cross-wall must be built 

 solid, and in the usual manner, with the bricks laid 

 flat ; the breadth of it will therefore be about 4 

 inches, giving a bearing to the flooring-bricks of 2J 

 inches. Then divide the space thus enclosed, into 

 parallel spaces of the same width as the bricks are long. 

 On all the lines that mark the divisions of these spaces, 

 run up, successively, walls built in a brick-on-edge 

 manner, the surfaces of the tops of which must range 

 evenly with each other, and also with that of the solid 

 wall already built. These walls will be about 2 

 inches thick, and will, therefore, afford a bearing for 

 the ends of the flooring-bricks of 1 inch. These 

 walls, it must be observed, are not to be built solid, but 

 in what is called a pigeon-hole manner, that is, with 

 open spaces left at regular distances in the brick-work. 

 When these brick-on-edge walls are finished, one com- 

 partment for the reception of a single vine will be com- 

 plete, as far as the walls are concerned ; and all the 

 remaining area of the bottom of the house is to be oc- 

 cupied by walls built up in the same manner, and en- 

 closing a similar space within each compartment. The 

 solid walls are for the purpose of keeping the roots of 

 the vines separate from each other, and the intermedi- 

 ate walls have open spaces left in them, to permit the 

 roots to ramble freely throughout the entire mass of 

 materials deposited within each compartment. The 

 roots of each vine being thus kept separately, any vine 



