Periodical Literature. 153 



Catalpa speciosa is said to suflfer mainly from early and late 

 frosts, and hence is to be grown under shelter ; this seems a pecu- 

 liar experience considering the ease with which the species is 

 grown in the west. 



For Juglans nigra small pure stands or groups are recom- 

 mended, single planting is not satisfactory except in the region 

 of the chestnut where growth is rapid. 



Abies balsamea is said to be similar to the European Fir which 

 is questionable when we consider its habitat in the Northern 

 swamps, and its rapid rate of growth but short life. 



To Pimis divaricata very high tribute is paid for its use on 

 the poorest driest sands and gravels, and in swampy conditions, 

 on dunes and for wind or fire mantles. Enormous jdemands for 

 plant material have brought the price of seed to ^16 per pound. 



Regarding the soil requirements of Pinus strobus various 

 doubtful statements occur. It is said to be useless on pine soil of 

 the third class, yet within sight of the writer two White Pine 

 stumps five and six feet in diameter on a purely siliceous poor 

 soil testify to the contrary, at least for the rigorous alpine con- 

 ditions of the Adirondacks. Its absolute frost hardiness is 

 praised. 



Thuja occidentalis is noted for its excellent wood, its hardiness, 

 and shade endurance ; it is recommended for admixture with ash 

 or White Pine or under-planting under oak, pine or larch, 

 especially on fresh soils. 



Tsuga canadensis is given as a rapid grower which it is not 

 with us. 



Chaviaecyparis lawsoniana a shade endurer, in a warm climate 

 with humidit}^ corresponding to ash sites is credited with frost 

 hardiness and rapid growth ; under other conditions it succumbs 

 to summer or winter drouth. It is recommended for under- 

 planting with deciduous trees or pines, but not with spruce or fir. 



Of Pseudotsuga taxifolia the rapid growth, shade endurance 

 and adaptation of the root system is praised. Its sensitiveness 

 to early and late frosts, and to low winter temperatures followed 

 by sun make its use in the plain with its contrasts of moisture 

 and temperature conditions unsatisfactory, unless a nurse cover 

 is provided. It is recognized that the Colorado variety diflfers in 

 this respect, but it is also sensitive to late frosts and grows much 

 more slowly. 



