110 FIELD MUSEUM OF NATURAL HISTORY 
the spiny fruits of the Gray and Yellow Nickers (Guilandina 
crista and G. honducella) ; the peculiar, twisted, flat, blue pods of 
Timbo Morati {Enter olohium sp,), and many others. 
Case 469. — Seeds of the Bean Family. Note the similarity of 
the various seeds of this family to those of the common table 
bean. Examine the very poisonous Ordeal Bean of Old Calabar 
(Physostigma venenata) ; the Tahiti Chestnuts (Inocarpus 
edulis) ; the beautiful blue Damabo Bean (Rhynchosia cyano- 
sperma) used as a weight for gold dust on the African Gold 
Coast; the Ox Eye Beans (Dolichos sp,) of South America, 
utilized, by inlaying, for watch charms by jewelers; the peculiar 
angular pods of the Soap Fruit of Africa (Tetrapelura Than- 
ningii) ; the tanning fruits Algarobilla (Prosopis sp,) and Divi 
Divi (Caesalpinia coriaria) of the West Indies, and many other 
useful seeds. 
Case 470. — The Pea Nut (Arachis hypogaea) in its various 
forms and qualities; soap and candles made from the oil; vari- 
ous nut foods used as substitutes for meat; and a fruiting plant 
upset to illustrate the peculiar habit of this plant of maturing 
its fruit beneath the ground. 
Case 471. — Exhibits a long series of the useful gums yielded 
by the Bean Family. Note the valuable varnish gum Algarrobo, 
Corobore, Jatoba, Gum Anime or Locust Gum, the recent and 
fossil product of the South American Locust (Hymenaea cour- 
baril) ; the beautiful, clear white Gum Tragacanth {Astragalus 
leiocladus) of Persia; the clear yellow Mesquite Gum {Prosopis 
juliflora) of the Southwestern States; the Persian Babul or Gum 
Arabic {Acacia arabica), and many others of beauty and value. 
Cases 472 and 473. — ^The tan and dye barks of the Bean Fam- 
ily. These are mostly the barks of various Acacia trees high 
in the yield of tannic acid. Note especially the Australian Wat- 
tle Barks {Acacia decurrens, A, Maidenii, A, armata. A, deal- 
bata, A, neriifolia, A, pycnantha, A, pruniosa, A, falcata). The 
dye woods: Cam-wood {Baphia nitida) of West Africa, Sappan- 
wood {Caesalpinia Sap pan), Log-wood {Haematoxylon campe- 
chianum) and others. 
The Mahogany Family {Meliacece) . 
Case 474. — Note the fruit forms in this family as represented 
by that of the Mahogany {Swietenia mghogani) ; Spanish Cedar 
