256 Mr. W. G. Adams on the Application of the 



-J 



3«r 2 cos 6— a 3 cob 3 6, . \/r 2 + 2tfr + a 2 cos 2 0— a cos 6 

 tan _i 



r 

 r 



Now let a — _ 



Then 



fcos 2 . f- ,/ /T C^S 2 ^ C0S<9\ 2 1 ,/, 



^-cos 2 fl . cos 6 . tan-V 3 ^? " ^) *}• 



The resistance on the two floats will be equal to one another. 

 Therefore the resistance on a pair of floats 



= ip,a*r 4 { i( 4/8+ cos*0— cos 0) cos tf0 



+ Jlo g (l + (^^^^7) „* »« 



J... - „, -. _i/" V'8 + COS 2 0— cos#\ 1Q \ 

 1 (4— cos 2 0) cos 6 tan ( 2 J "^ f 



Also the moment of resistance on a pair of floats 



, .slC/n COS 2 6 5 COS 2 „ - /" COS 2 0\ ,,, 



- f(l - f cos 2 0) log { 1 + ( ^8 + co»»fl-eo gjy j d0 

 -fcos0(3-jcos 2 0)tan-'('" /8 + cos2g - cosg ) d» I 

 = 1p / <bV 5 |C2 + cos0(a/8 + cos 2 0-cos0)}(?0 



-jiog { 1 + ( ^^" cos 7 } de 



+ G cos 2 01og { i + {V8 + cos 2 0-cos0j 3 J ^ 

 -j2co S 0tan-(i ^+^- cos ^ 



