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course projects beyond them ; the bank soil is excavated 

 for this course as before, and precisely the same procedure 

 adopted until the wall is carried up to its full height . Should 

 the stones be at all of slab form, care must be taken to bed 

 them to slope at the reverse angle of the wall face, so that 

 all rain falling upon them runs into the bank, and, conse- 

 quently, to the plant roots, instead of dripping outwards. 



To secure uniformity of slope, it is usually sufficient to 

 see that the roughly-dug bank basis of the wall is all right 

 in this respect, but if it be desired to check this, a few strings 

 stretched up the bank at the proper angle as eye-guides are 

 easily arranged. 



In arranging the plants, the perpendicular chinks left 

 between the stones must be firmly filled with soil when they 

 receive their tenants, and it is well to pack these in with a 

 few small pieces of stone. If old building stones are used, 

 it is well to knock off all square corners, and if they are a 

 mixed lot, to vary them as much as possible. When the 

 work is done, a good, but gentle, syringing should be given 

 to settle the soil and refresh the plants, and should the 

 weather be sunny this should be repeated a few times, 

 especially if any soft-foliaged plants, like campanulas, etc., 

 have been introduced. If such a wall face north, it is, as I 

 have said, best fitted for hardy ferns, but as many of these 

 have substantial crowns, the lateral spaces between the 

 stones must be widened to accommodate them ; this, how- 

 ever, is a common-sense matter, and I need not enter into 

 useless details. All, indeed, that I need add, is that, given 

 such a wall, a selection of good varieties should be installed, 

 and the space not wasted on common ones, as is too often 

 the case, 



Chas, T. Drtjery, F.L.S., V.M.H, 



