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Quercus infectoria, Oliv. 
Only a small tree, with deciduous foliage. Chiefly from this tree the 
galls of commerce are obtained! 
Quercus laneifolia, Roxb. 
A tall timber tree of the Himalayas. Wood valued for its durability. 
Quercus macroearpa, Miohx* 
The Bur Oak of North America. Tree 70 feet high. The timber 
nearly as good as that of the White Oak. 
Quercus palustris, Du Rot. 
The Marsh Oak of North America. Height 80 feet; of quick growth 
The wood, though not fine-grained, is strong and tough. 
Quercus Prinus, L. 
The North American Swamp Oak. A tree, 90 feet high, available for 
wet localities. Foliage deciduous. Wood strong and elastic of line 
grain. A red dye is produced from the bark. 
Quercus Robur, L. * 
The British Oak, extending through a great part of Europe and 
Western Asia, attaining a great age and an enormous size. Extreme 
height, 120 feet. Two varieties are distinguished: — 1. Quercus 
seiaUiJloru , Salisbury. The Durmast Oak, with a darker, heavier timber 
more i lustic, less fissile, this tree is also the quickest of the two in 
growth, and lives on poorer soil. Its bark is also richer in medicinal 
dyeing and tanning principles. 2. Querius pedunculata, \\ illd. 'I bis 
variety supplies most of the oak-timber in Britain for ship-building- 
and is the Kst for bending under steam. It is also prefetred for 
joiner’s work. 
Quercus rubra, L. 
Tiie Red Oak of North America. Height, 100 feet; diameter of sttm 
4 feet. The wood is not of value; but the bark is rich iu tannin 
Autumnal tint of foliage beautifully red. 
Quercus semecarpifolia, Smith. 
In the Himalayas. Height of tree often 100 feet: girth of st.-m 
18 feet. It furnishes a first-class timber, 
Quercus serrata, Thunberg. 
One of the 23 known Japan Oaks. It yields the best food for th 
oak silkworm [Bombyz Yamamai.) e 
Quercus Sideroxylon, Humboldt. 
Mountains of Mexico, at 8,000 feet elevation. An Oak of great • 
of compact timber, almost imperishable in water. Q. laneeolai^n' 
ehrysovhylla, Q. reticulata , (/. lauri/ia, Q. oltusata, Q. 
Q. Xalapauis (Hiimb.) and Q. acutifcha (Nee), are among the ml™ 
other highly important timber Oaks of the cooler regions of Mexico ^ 
Quercus squamata, Roxburgh. 
One of the tallest of the Himalayan Oaks. Wood lasting. 
Querous Suber, L.» 
The Cork Oak of South Eutope and North Africu; evergreen re 
attains an age of fully 200 years. After about 20 years It , ' i 
stripped of ils bark every 0 or 7 rears; but the best cork is nl? 1 - r 
from trees over 40 years old. Height of tree about 40 feet V !imed 
of a sweetish taste. ’ Acoms 
