EUCALYPTUS TREES. 241 
Mexico, at eight thousand feet elevation. An oak 
of great size, of compact timber, almost imperishable 
in water. Q. lanceolata, Q. chrysophylla, Q. reticu- 
lata, Q. laurina, Q. obtusata, Q. glaucescens, Q. Xal- 
apensis (Humb.) and Q. acutifolia (Nee), are among 
the many other highly important timber oaks of the 
cooler regions of Mexico. 
Quercus squamata, Roxburgh.—One of the tallest 
of the Himalayan Oaks. Wood lasting. 
Quercus Suber, L.—The Cork Oak of South Europe 
and North Africa; evergreen. It attains an age of 
fully two hundred years. After about twenty years 
it can be stripped of its bark every six or seven years; 
but the best cork is obtained from trees over forty 
years old. Height of tree about forty feet. Acorns 
of a sweetish taste, 
Quercus Sundaica, Blume.—One of the oaks from 
the mountains of Java, where several other valuable 
timber oaks exist. 
Quercus Toza, Bosc.—South Europe. One of the 
handsomest oaks, and one of the quickest of growth. 
Foliage evergreen. 
Quercus virens, L.—The Live Oak of North Amer- 
ica, evergreen, fifty feet high. Supplies a most val- 
uable timber for shipbuilding ; it is heavy, compact, 
fine-grained ; it is moreover the strongest and most 
durable of all American oaks. Like Q. obtusiloba, 
Michaux., it lives also on seashores, helping to bind 
the sand, but it is then not of tall stature. Of many 
of the three hundred oaks of both the western and 
eastern portions of the northern hemisphere, the 
properties remained unrecorded, and perhaps unex- 
amined ; but it would be important to introduce as 
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