274 



PARKS AND PLEASURE-GROUNDS. 



effective yellow evergreen known. Tews are extremely useful in pleasure- 

 grounds as low trees and shrubs, and make good imdergrowths in the 

 woods of the park, especially where a depth of shade is required. It 

 must never be forgotten that they are poisonous to horses and cattle. 



The effects of Climate. — The climate of the locality 

 will, in great measure, limit the number of species in 

 the Pinetnm, or at least the number of those which may- 

 be expected to attain a considerable degree of perfection. 

 Of the hardiness of certain recently introduced sorts 

 some doubt may be reasonably entertained, except per- 

 haps in the case of such as are known to thrive in cli- 

 mates of equal or greater severity than our own. In 

 the southern parts of England and Ireland, most, per- 

 haps aU, of those marked subhardy may succeed; but 

 in less favoured localities they will exist only as spe- 

 cimens preserved with diiiiculty. Those marked doubt- 

 ful will also become inferior trees and shrubs. In the 

 higher and more northern regions of the country the 

 subhardy kinds must increase in number, and so pro- 

 portionally diminish the extent of the members of the 

 Pinetum. The climate of the south of England and 

 Ireland and of the west coast and islands of Scotland, 

 where there is little frost, we cannot doubt, will prove 

 most suitable to the group Pseudo-Strobus, which is the 

 most delicate of all the divisions of the pine tribe. At 

 the same time, there are some countervailiag circum- 

 stances in elevated localities. Many of the pines are 

 natives of mountainous regions, and therefore find some- 

 thing congenial in our hill climates. We dou.bt not 

 that certain species, which do not succeed in the low 

 grounds, will be found to do better in the higher dis- 



