BOTANY AND PLANT ECONOMICS 113 
The Buckthorn Family (Rhamnacece), 
Case 483. — Note th( gums, dyes and fruits of this family: the 
Christ’s Thorn (Paliur^is spini-Christi) of Palestine, supposed to 
be the thorn that formed the crown at the crucifixion; Jujube 
Berries and gum {Zkyphus jujuha), the berries are known as 
Chinese Dates and are eaten fresh or dried. Buckthorn Berries 
(Rliamnus catharticus) from which the water color “sap green” 
is extracted; yarns dyed yellow and brown with the bark of the 
British Buckthorn (R, frangula) ; and Kemponashi (Hovenia 
dulcis) an interesting wood utilized by the Japanese for fancy 
cabinetry. 
The Vine Family (Vitacec^), 
Case 483. — Note the grapes and raisins produced by this fam- 
ily: Argols, the basis (T baking powders, deposited on the inner 
surfaces of wine casks; grape sugar, a natural glucose from 
grapes; and note that the common dried “currants” or Zante 
currant is not a currant, but a small seedless grape from Corinth, 
Greece {Vitis carinthiaca). 
The Souarinut Family (CaryocaracecB) , 
Case 484. — Souari Nuts (Caryocar nuciferum) from British 
Guiana, said to be the most delicious of all nuts, and oil extracted 
from the kernels; Picuy, Pikia or Ouricori Oil from the kernels 
of C. butyrosa. 
The Tea Family (Theacece). 
(See also Cases 33, 34, 47.) 
Case 484. — ^Various types of teas, many of them very fine 
and costly. Note the gold and the silver tips (young leaves gath- 
ered before unfolding), also tea grown in South Carolina; soluble 
tea; and Brick Tea eaten in Thibet boiled like potherb. Note the 
wood of this family represented by Mokkoku {Camellia japon- 
ic a). 
The Wingedfruit Family {Dipterocarpacece) , 
Case 485. — Note the resins yielded by various species in this 
family: Sal {Shorea robusta) an aphrodisiac gum of India; 
Doona Gum {Doona trapezifolia), and Hal Gum or Piney Resin 
from Valeria acuminata, both valuable varnish gums; and In Oil 
