282 



PARKS AND PLEASURE-GROtrNDS. 



positions,, and those of lower growth, or shrubby cha- 

 racter filling up the secondary places. The groups 

 should be made up of the generic and subgeneric divi- 

 sions, as given in our enumeration of the species. In 

 the genera Juniperus and Pirns, some of the subgeneric 

 sections may require to be farther broken down, other- 

 wise many of the species must be so placed that they 

 will have enough of room only for their partial develop- 

 ment j or they must be dotted out at such distances 

 as nearly to ungroup the whole. Where there is a 

 liberal allowance of ground to be occupied by the Pine- 

 tum, we should be disposed to recommend that the 

 groups should be constructed with principal trees, ar- 

 ranged on strict botanical principles, but planted very 

 sparsely ; and that the intervals between these main trees 

 should be filled up with interesting duplicates of the 

 same or allied species, to act as nurses, or to be tem- 

 porary occupants, till the whole space is required by the 

 others. This plan, of course, implies a continued and 

 resolute thinning out, as the Pinetum advances to ma- 

 turity. We do not think it needfid to say anything of 

 the position of the groups relatively to each other, as 

 our remarks on the decorative treatment of the Arbore- 

 tum will, mutatis mutandis, apply to the Pinetum. 



In our remarks appended to the lists of species, we 

 have noticed the colours of the foliage and the forms of 

 many of the trees and shrubs there enumerated, to aid 

 the planter in making his selection and fixing his sub- 

 ordinate arrangements. The effect of the various colours 

 is an element which must be taken into careful consi- 

 deration. Hitherto the species employed have been 

 principally those with dark-coloured foliage — a property 

 extremely valuable in producing depths of shade, and in 



