170 
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* S. Fig. 72. 
44. (P+1 ) s . R-l . R . (P) 5 P+». 
•S' 3 R £5 ooP. 
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* S. rig. 73. 
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R+l . R+2 . R+3 . |R+1 . 4R+2 
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it s . 4R—2 . £R-1 . 4R- 
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±S’± iS'i S4- «3 «3 £7 S9 sS'4 
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*S's ±s'* 4«* 9P «,p «#» 
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