In the * Ramble ”—Fourth Excursion 
nigra) is seldom cultivated. These two native species 
are distinguishable, in one respect, by the fact that the 
white one sheds all of its cones every year, whereas the 
black spruce retains them for several years. The Park 
contains also a spruce from the Black Sea (A. orientals), 
and the Colorado blue spruce (4. pungens). 
The most admired firs in the world (a genus with fa¢ 
leaves, mostly in ‘‘ two ranks,’’ z.e., on opposite sides 
of the branch) are the beautiful silvery-tinted species, 
which are quite rare. In their native habitats they are 
often large and stately, but the cultivated specimens are 
quite small. The Park contains two sorts, the Colorado 
silver fir (4. concolor), and Nordmann’s silver fir (A. 
nordmannii) from the Crimean Mountains. Here, too, 
are the balsam fir (4. da/samea), from which comes our 
Canada balsam, and the Southern analogue of the same 
(A. fraser). 
The hemlock (Zsuga canadensis), a North American 
product, is a distinctive tree to be proud of, but its ap- 
pearance in the Park does not do it justice. In luxu- 
riant condition it combines the temperaments of conif- 
erous and deciduous growth very effectively. 
Junipers, erect and prostrate, are well represented here, 
and illustrate a curious type of vegetation that is repug- 
nant in detail but decorative in the mass. They can be 
studied to good advantage around the Bolivar statue ; 
all sorts of conifers in that locality seem to thrive better 
than elsewhere. 
A beautiful Japanese evergreen is the Cryftomeria, 
more graceful than most of its class, a low tree with 
rather spreading and drooping branches thickly studded 
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