ue; E, piston;. F, screw-cap; G, rubber tube: 
about 50 cubic inches; J, pressure gauge ; K, anvil weighing 
H. pioch-valve ; I, aur reservow, 
140 Ibe. 
Fig. 47. Pneumatc gun; A. wooden frame: B. shot-san barrel, 30 inches long, “726 inch internal 
diameter ; C, cross n 
