

352 Prof. Adams on the Application of Screw-Blades 

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__ I cos Q tan" 1 -d6 \ 



J r r J 



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- Pl mA( !e±*<*Sr™ e d P ae 



J<W 2 cos — a 3 cos 3 . ,p 7/1 1 

 tan~ 1£ -.tf0 f 

 r r J 



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_f^^^ cos ^tan-^.^} 

 J r r J 



+ |/>/r 3 fcos 2 01og(l + ^dd + ip^ar^co&Otm- 1 ?; . IB 

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- (7 3 _ ^ cos 2 6^ - cos 0. tan" 1 £.d0 

 J\ r^ /r r 



- 5 [ Jr cos * ^ + J? cos2 e io s c + s * 



_ f/l _ ^ cos 2 £l) cos tan- 1 £ <$] 



+ l-iJ cos ^ 1 °s( i -S^ + i7j cos35taii -v e 4 ! 



