422 



Descrij:fiv>i (j' a l)t'sig)ijhr the 



Fig. 76. is a desiirn whiclx might, if expense were not an 

 object, be substituted hvfg. 75. In it the wliole of the area 



(about an acre) is covered with a conical roofofghiss, 200 ft. 

 in diameter at the base, and 100 ft. hi^h in the centre. Tiie 

 plan shows the area laid out in concentric beds and walks: 

 with radiatinjr walks, and four radiating partitions to separate 



