BOTANY AND PLANT ECONOMICS 
89 
sp6ci6S H'icot'id Hicot"id ovatci 3,ii(i HicoTid alho,. But- 
ternuts {Juglans cinered) and Walnuts {Juglans nigra and Jug- 
lans texensis); and the English Walnut { Juglans regia) from the 
hard-shelled natural nut, through many fine thin-shelled grades, 
to the highly specialized form of California. 
The Oak Family {Fagacece). 
Case 46.— The Cork Oak {Quercus suber) from Portugal. 
A very fine and costly decortication of a young tree with three 
branches. This specimen is considered one of the best examples 
of dextrous cork peeling ever produced. 
Case 47. — Right half. The wood of three species of Japan- 
ese oak, Ichigashi {Quercus gilva), Akagashi {Quercus acuta), 
and Shirakashi {Quercus glauca). Note the fruits (acorns) of 
various species of oak and their variation of form; also the three 
species of Chestnuts; the Common Chestnut {Castanea dentata) 
the Chinquapin {Castanea pumila) and the Spanish Chestnut 
{Castanea vulgaris), also Polente meal and candied chestnuts 
from Italy. Note that the Beechnut {Fagus americana) also 
belongs to this family. 
Case 48. — Various products of the Cork Oak {Quercus 
suber). Observe the bark, or cork peelings of successive per- 
iods and the increase of density and thickness as a result. Note 
the finer grades of corks, their velvety surface and lack of holes 
and cracks; note also the skill with which cork can be carved 
as shown in the “Cork Picture” of the Doge’s Palace, Venice. 
The utilization of waste cork is also exemplified in many ways. 
The Smartweed Family {P olygonacece) . 
Case 49.— Left half. Note that Buckwheat {Fagopyrum 
esculentum) , Rhubarb {Rheum rhoponticum) , and Dock {Rumex 
crispus), belong to this family association. Observe the Kite 
made crudely of a single dry leaf of the Sea Grape {Coccolohis 
uvifera ) . 
The Wormseed Family {Chenopodtacece) . 
Case 49. — Left half. The Sugar Beet {Beta vulgaris), 
showing all the steps in the extraction of sugar from the Beet 
by 23 distinct specimens representing the result of each pro- 
cess. Of the sugar product of the world (13, 957^269 tons) that 
from the Beet exceeds that from Sugar Cane by over 500,000 
tons. 
