Canon Moseley vn the steady Flow of a Liquid. 

 by equation (53), 



i . 1 2 





^-^ 



I 36R ■*" m; J 



Neglecting the first term in the denominator and reducing, 



Hh)- 



2yM;*(6>*R-y^R-.l)A^R3 



H 





The discharge of a rectangular pipe. 



Let h and c be respectively the breadth and depth of a rectan- 

 gular pipe internally, and let the line similarly placed in each 

 of the films which is represented by r be its breadth b. 

 Then R = Z> ; also the depth of that film whose breadth {r) = 1 

 . c 



.:f=\xl, 2,fr, = 3 + 2|; .-.^. = 1 + 1; 

 c 

 x^=±.= ^ = -^. (58) 



'f, c_ b^c ^ ' 



If the line (r) similarly placed in each of the films had been 

 its depth c instead of its breadth bj then 



^=— , (59) 



* 



If R be exceedingly small. 



^^^gjw^hh^^ (56) 



t Editor's Note. — I have inserted Xa in this expression ; it was omitted 

 in the MS. 



