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Description of a Design for the 



a a a a, The main entrances from the surrounding terrace. 

 b b b by Corresponding entrances from the interior area. 

 c c c c, &c, Beds for large specimens to grow in the free soil. 

 d d d, &c, Shelves for plants in pots. 

 e e e e, The exterior pit, in four divisions. 

 f/ff, The interior pit, in four divisions. 



g, Central tower, in which is contained the steam or hot-water apparatus 

 in the cellar story, a potting-shed on the ground floor, and in the upper 



