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over-looked tree. Its wonderfully rapid growth at Abbottsford has 

 begun to attract notice there. 



P. Nigra. — At Warsaw some of the roads are lined with grand 

 old trees of what is there known as the Vistula poplar. We 

 saw large spreading trees 60 or 70 feet in height, with a leaf much 

 like our Cottonwood, and with bark rough except on limbs less 

 than 5 or 6 inches. In the Botanic Gardens at St. Petersburg 

 are two immense trees, one nearly six feet in diameter, now in a 

 state of decay, and said to have been planted by Peter the Great. 

 However, at Riga and other places this tree is not a favorite on 

 account of its tendency to decay or kill back in the tops of the 

 branches, both on dry and moist soil, and as we get into severer 

 climates trees of this variety are often very unsightly, and thus it 

 is not a favorite as is Monilifera. 



A very different tree is the Nigra of the Botanic Gardens at 

 Munich. A tall tree of small diameter, not spreading, and with 

 very small leaf. A good healthy tree, unlike others, and worthy 

 of trial. According to the Flora Rossica, by Dr. Ledeborn, the 

 Populus Nigra is a native of Lithuania, Moscow, Kazan, the 

 Caspian desert. Southern Siberia, and the Altai. For some 

 reason the Siberian Balsamiferas have been planted instead of it in 

 Eastern and Middle Russia. 



P. EuGENEi. — This is a hybrid between fastigiata (: Lom- 

 bard poplar) and monilifera ; so we are told by Messrs. Simon- 

 Louis at Metz, who have a very large collection of the poplars of 

 Central Europe and who seem to have made them a special 

 study. In the Botanic Garden at Nancy there is an immense tree 

 with a straight trunk between five and six feet in diameter, 

 growing to a great height, with branches somewhat pendulous. 

 Certainly the poplar is a grand tree. 



P. TREMULA.— Our own aspen is the poorest tree we have, so 

 short lived. The Russian form grows to much larger size, and 

 does not appear to be short lived. In Botanic Gardens at 

 Munich there is a high, narrow, small leaved Tremula, much like 

 the Munich Nigra. A good tree. 



