796 



ARBORETUM AND FRUTICETUM. 



PART III. 



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 2ft. or 3ft. 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 

 each 



climb ; ng varieties may be used to form a sort of open arcade, to separate 

 i section, as indicated in Jigs. 526. and 527. In these figures, a repre- 



