342 PROCEEDINGS OF THE 



manner as regards soil and situation, and in selecting them it is 

 much better to have varieties which will grow, however common 

 they may be, than to plant such as will die off in the course of a 

 year or two. In the following list of trees and shrubs which have 

 been found to succeed pretty well in towns and smoky neighbour- 

 hoods, my aim has been to arrange the names in the order of the 

 suitableness of the plants for such purposes ; those of each group 

 which possess the greatest power of endurance being placed first, 

 with the others following in relative order. 



Salix cap'ea, goat willow ; >S'. rubra, seaside or scarlet willow ; 

 S. Busseliana, Bedford willow; S. alba, white or Huntingdon 

 willow j S. Americana, weeping willow. 



Populiis nigra, black poplar; P. canescens, gray poplar; P. 

 tremula, aspen ; P. alba, abele ; P. monilifera, black Italian poplar. 



Crataegus oxyacantha, common hawthorn, with its varieties; 

 C. punicea flore-pleno, the double crimson ; C. multiplex, the double 

 white ; and C. aurea, the yellow fruited hawthorn ; C. Crus-galU, 

 cockspur thorn ; and others. 



Laburnum alpinum, Scotch laburnum; L. vulgare, common 

 laburnum. 



Eobinia Pseudacacia, locust tree or false acacia. 



Ulmus montana, wych elm; U. camjpestris, English or common 

 elm. 



Fraxlnus excelsior, common ash; F. leniiscifolia ; F. ornus, 

 flowering ash. 



Betiila alba, common birch. 



Prunus Padus, bird cherry. 



Cerasus flore-jyleno, double flowered cherry. 



Pyrus Sorbus, service tree ; P. Malus pnmifolia, Siberian crab ; 

 P. spectabilis, Chinese crab ; P. Auciiparia, mountain ash. 



Amelanchier Botryapium, snowy mespilus. 



Euonymous Europaeus, spindle tree ; E, angustifolius, E. latifolius. 



Garagana arborescens, pea tree. 



Alnus glutinosa, common alder; A. g. lutlnora asplenifolia, fern- 

 leaved alder ; A. americana, American alder. 



Bhus typhina, stag's-horn sumach ; B. Cotinus, Venetian sumach 

 or wig tree. 



Quercus Cerris, Turkey oak ; Q. coccinea, scarlet oak. 



Salisburia adiantifolia. Ginkgo or maiden-hair tree. 



Sambucus nigra, common alder; S. racemosa, scarlet alder. 



