BOTANY AND PLANT ECONOMICS Y7 
Case 17. — Further uses of giant cedar bark; a branch of 
the common cedar of eastern North America (Juniperus vir- 
giniana) ; and a series of specimens illustrative of the manu- 
facture of lead pencils from the wood. 
The Olive Family (OleacecF) . 
Case 18. — Note that the Olive, the Ash, and the garden 
Syringa and Privet belong to this family. Note the wood of 
the Japanese Olive, Hira-gi (Olea aquifolium), and the true 
Olive of the Mediterranean Region (Olea europea). Observe 
Ibota wax or Ibota-ro an insect wax on the Japanese Ash 
(Fraxinus puhinervis), and Clarincillo a similar wax from 
Mexico. Note the orange-red dye-flowers of Harsinghar (Nyct- 
anthes arbor-tristis) . Observe a fruiting branch of the Olive, 
a fine series of Olive oils and Castile soaps from Olive oil. 
The Milkwort Family (Apocynacece) . 
Case 19. — Stems, fruit and fiber of the wild hemp plant 
of the American Indians (Apocynum cannabinum). The vari- 
ous forms of African and Congo Rubber from the Rubber 
Vine (Landolphia owariensis). Note starch, called “Danish’’ 
by the Bahama Negro, a product of the tubers of Echites 
umbellata. 
The Gentian Family (Gentianacece) . 
Case 19. — Note the various medicinal bases from this fam- 
ily; the North American Buck Bean (Menyanthes trifoliata) , 
the American Columbo {Frasera carolinensis) ; and the Amer- 
ican Centaury (Erythrea centaurium) . 
The Strychnine Family (Loganiacece) 
Case 19. — A family having many very poisonous members 
containing strychnine. Note the Dog Buttons, seeds, of Strych- 
nos nux-vomica, and the gourd of Guianian Arrow Poison, 
Woorari, of which S. toxicaria is one of the principal ingre- 
dients. Note also the Yellow Jasmine (Gelsemium semper- 
virens) of the southern United States. 
Case 20. — Model of the Indian Corn plant (Zea Mays) 
from a New York State specimen, and above it two large land- 
scapes fashioned from various colored corn husks and “silk.” 
