Garden and Agricultural Structures. 197 



spaces between the uprights into primary triangles, as inJig.Sl.^ 



which may be from 10 to 15 ft. high;^. 52., which may be 



be from 20 to SO ft. 

 ^2 high ; or Jig. 53., 



which may be from 

 30 to 50 ft. high. 



These walls might 

 be applied to con- 

 structing docks, 

 piers, and large 

 edifices, in marshy 

 ground or sand, of 

 any breadth. Had 

 the arsenal buildings 

 at Woolwich been 

 so built, even for the bottom story alone, they would not now 

 be falling piecemeal asunder, and presenting to foreigners 



coming up the Thames so disgraceful a specimen of British 

 engineerino;. 



Perhaps the simplest edifice capable of being made in this 



o 3 



