Plate 15. The chief beauty of the Colorado Blue Spruce is the striking 

 contrast between the vivid silver blue foliage and the dark green of 

 other trees. This is especially the case just when the new growth has 

 been formed for the season. A remarkable photograph of a specimen 

 at the home of A.. Norby, Madison, S. D. 



Plate 16. Deciduous Plants for Snowtraps. (I.) Hedge of Siberian 

 Sandthorn at the South Dakota Experiment Station, 1905. This is 

 Hippophae rhamnoides as found native at Irkutsk, Siberia. The Si- 

 berian Sandthorn is not a conifer but might serve a useful purpose as 

 a hedge for the outer protecting row of a snow-trap 



