ARID AGRICULTURE. 423 



Utah and Western Kansas and Nebraska. Wind 

 breaks are important for protection of young 

 planting. 



Carolina Poplar, Norway Poplar, Siberian 

 Poplar, Lombardy Poplar, Elm, White Ash, 

 Green Ash, Soft Maple, Cut-Leaved Birch, the 

 Hardy Catalpa (Catalpa Speciosa), Honey Lo- 

 cust, Black Locust, Black Walnut, Hackberry, 

 Horse Chestnut, Mountain Ash, Russian Mul- 

 berry, Russian Olive, Silver Poplar, Silver Ma- 

 ple, Norway Spruce, Box Elder, Black Cherry. 

 The most hardy varieties of apples are Wealthy, 

 Yellow Transparent, Northwest Greening, Pe- 

 ter, McMahan, Gano, etc. 



SOME or THE The following list of shrubs have proven to 

 SHRUBS AND ke hardy under the most trying climate and sea- 

 VINES son. Flowering Currant, Native Gooseberry, 



Box Thorn or Matrimony \ 7 ine, Lilac, Bridal 

 Wreath (Spirea Van Houteii) Buffalo Berry, 

 Silverberry, Choke Cherry, Native Roses, Tar- 

 tarian Honeysuckle. The four most hardy 

 vines are the Annual Wild Cucumber or Balsam 

 Apple, native Hops, of which the roots live 

 through the winter, Native Clematis, which is a 

 very hardy perennial, and Virginia Creeper. 



