a *r <z ° a 4 3 ° 2 - & \ z s/o Le 3 é~ - Oo Leen Z 2 < = ° % 7 — \ ° “7 - \ —_ 5k = Rat —\ Ne TERN BONE 7 BACKGROUND 2 or = 0 aq 100 i. 200 4. 300 4 400 A 8a0 2 600 ADDED ABSORBER , MG/CM2 al i 700. i 800 Fig. 4.10 —Mass-absorption curves from bones of rat and tern samples, postshot,