IO8 HORTICULTURE BY IRRIGATION. 



The larch or tamarack (Larix Americana,) is succeeding well on low, 

 moist soil, or under irrigation. The European species, which is a more 

 valuable tree, promises to be successful and to grow quite rapidly when 

 established. Evergreens may be propagated from cuttings, but to grow 

 this way requires considerable skill and good facilities for controlling heat 

 and moisture. 



CUTTINGS. 



All species and varieties of the poplar, to which family our cotton- 

 wood, (Populus Monilifera,) shaking aspen, (P. Tremuloides,) and balm of 

 Gilead (P. Condicans,) belong, grow rapidly from cuttings if kept in 

 moist soil. This is true of willows and some other trees. 



THE CUT LEAVED WEEPING BIRCH. 



Among deciduous ornamental trees of great merit for Colorado, 

 special attention is called to the cut-leaved weeping birch. It is a mag- 

 nificent lawn tree and absolutely hardy in the extreme Northern part o 

 the State. 



