796 



ARBORETUM AND FRUTICETUM. 



PART IIJ. 



When a rosarium, the groups of which are disposed so as to form one 

 symmetrical figure, is to be planted solely with dwarf roses, the walk 

 which surrounds it ought always to be 2 ft. or 3 ft. above its level, in 

 order that the spectator, after having studied the groups in detail, may be 

 able to retire to the surrounding terrace walk, and get a birdseye view of the 

 whole. This principle, indeed, is applicable to all symmetrical rosariums, cis- 

 tetums, flower-gardens, American grounds, &c, which are to be planted with 

 dwarfs. Where standards, whether roses or other shrubs, are used; either in 

 groups alone, or interspersed with the dwarfs, as in fig. 525., ; a surrounding 

 terrace walk, though almost always desirable, is not so essential for the dis- 

 play of the beauty of the scene. 



Where a rosarium cannot be formed in one compact whole, as in the 

 design, fig. 525., it may be laid out on each side of a leading walk, in various 

 ways. The walk may be either straight, or regularly curved : in either case, 



the climbing varieties may be used to form a sort of open arcade, to separate 

 each section, as indicated in figs. 526. and 527. In these figures, a repre- 



