26 ANIMAL RESOURCES OF THE UNITED STATES 
IL]. MISSILES. 
* Simple missiles, (those propelled by the unaided arm.) 
13. HURLED WEIGHTS. 
a. Stones and discs thrown by the hand. 
b. Weights dropped from an elevation, (dead-falls, not. automatic.) 
14. HURLED STICKS. 
a. Straight sticks : 
Clubs used as missiles. 
b. Curved sticks: 
Throw-sticks, used by the Moqui Indians of New Mexico in 
hunting rabbits. 
(Boomerangs.) 
15. HURLED SPEARS. 
a. Darts and lances. 
** Oentrifugal missiles. (Propelling power augmented by an artificial in- 
crease of the length of the arm.) 
16. SLINGS AND SPEARS THROWN BY STRAPS. 
a. Slings. 
b. Spears, with straps used in throwing them. 
17. MISSILES PROPELLED BY “THROWING-STICKS.” 
a. Spears with throwing-sticks, used by Eskimos: 
Series of throwing or darting sticks. 
#** Missiles propelled by a spring.—t Spring consisting of bent rod. 
18. BOWS AND ARROWS. 
a. Bows: 
Simple bows. 
(Cross-bows.) 
(Ballistas.) 
b. Arrows: 
Lance-arrows. 
Harpoon-arrows, used in fishing. 
Blunt or club arrows, used in killing birds. 
ec. Accessories of bows and arrows: 
Holders. 
Quivers. 
Arrow-head pouches. 
