104 PICE#, OR SPRUCE TREES 
more firmly to his magic carpet than do these young 
leaves to their so-called cushions. 
The two great divisions of the Picez are differen- 
tiated by the shape of their leaves. While the true 
Spruce Firs have four-angled, four-sided (tetragonal) 
leaves, the Omoricas have only two-sided leaves,, and 
are flat-leaved like the Abies. As has been pointed, 
out before, this difference is easily ascertained by 
rolling them between thumb and finger. We give 
illustrations, two of each, of how a flat-leaved specimen 
looks when cut transversely and enlarged by magnify- 
ing process, and how a four-sided or tetragonal leaf 
appears treated similarly. 
Tetragonal, or 
fours sidedmee. 
Magnifica, ~ 
Fiat-leaved, or 
two- -sided—e.z. 
Webbiana, 
TRANSVERSE SECTION OF LEAVES (MAGNIFIED). 
It will be seen by this that the difference that exists 
between a paper-knife and kitchen roller, or, to pursue 
our metaphor on more strictly analogous lines, between 
a sawn two-inch plank and a naturally grown rounded 
tree-stem, if subjected to the same process, is hardly 
more pronounced. Most of these generic character- 
istics appear in the table, pp. 280-282. We have 
only to supplement them with the fact that on both 
the male flowers are solitary and situated in the axils 
of the top leaves, while the female flowers are solitary 
and terminal—that is to say, growing at the end of 
the branches. And of the cones we would add, in the 
case of the Omorica group, at times, when for instance 
they grow in clusters (as on the Omorica species 
