How to form an Outdoor Fernery. 



15 



My own outdoor fernery was figured and described 

 in the ' Floral World ' of January, 1867. It consists 

 of walls and arches forming a sort of ruined bastion. 

 It is entirely built of "burrs" from the brick kiln, 

 which is the best material for the purpose in districts 

 where rough stone is not to be obtained. All the walls 

 are double, and filled in with strong loam, and, of 

 course, are roughly built, with many crevices and hollows, 

 in which the ferns are planted. These walls may be 

 likened to cases containing earth which is fully exposed 

 on the summit to the weather, and consequently may 

 be regarded as another kind of banks. The annexed 

 diagram will give an idea of the principle of construc- 

 tion, though straight lines of course convey no idea 

 of their form. 



GEOTTHB 



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inne. 



' Where the walk passes through the bastion, the walls 

 rise clear out of the gravel, but all round in the bays 

 and inlets mounds of earth are raised against them, as 

 would be the case in a real ruin, from the accumulation 

 of rubbish. As a hint of the rough construction of 

 the walls, and the nature of the effects produced, here 

 is a " bit " of scenery from the bastion, from a " photo," 



