48 Canon Moseley on the steady Flow of a Liquid, 



Table XIL 



Open trapezoidal channel, differing but little from a rectangle, 

 the width at the bottom being 1*8 metre, and the sides being 

 inclined 1 in 10 ; constructed with rough building-stones laid 

 in cement. Inclination 0'037 metre per metre. The ma- 

 sonry of the sides was more perfect than that of the bottom, 

 the latter being somewhat worn. The bottom was covered 

 with a slight deposit of mud which adhered to it. Darcy, 

 Series 33, pp. 110, 111. 



«-^{'-^ ->-?}•• 



X 



) 



Index 

 number. 



Depth of 



(i+f)^-r- 



Maximum 



Q. 



Q. 



stream, 

 c. 



velocity. 



By 



theory. 



By expe- 

 riment. 





metre. 





metres. 



m. c. 



m, c. 



1. 



01497 



0-97176 



3-49 



0-7993 



0-749 



2. 



0-2351 



0-94429 



4-55 



1-523 



1-489 



3. 



0-2972 



0-92329 



5-41 



2-1861 



2-247 



4. 



0-3553 



0-90385 



615 



2-7936 



2-996 



Q 



Table XIII. 

 Open Trapezoidal Channel. 

 211 



211 



{l-(l+^^% 



|v 



Index 

 number. 



Series. 



Exp, 



21. 

 21. 



22. 

 22. 

 22. 

 22. 

 22. 



2-3038 

 2-4542 



1-168 

 1-2864 

 1 -3893 

 1-4776 

 1-5541 



2Q 

 X 



0-58469 

 0-6739 



01570 

 0-2198 

 02740 

 0-3150 

 0-3478 



2Qx _2n 



0-88295 

 0-81718 



0-9889 



0-97903 



0-96866 



0-95967 



0-95187 



Maxi- 

 mum 

 Velo- 

 city, 



metres. 



1-651 

 1-805 



1-420 

 1-785 

 1-956 

 2114 

 2-390 



Q. 



By 



theory 



0-7611 

 1-1974 



0-1174 



0-21907 



0-31082 



0-41008 



0-4770 



By 

 experi- 

 ment. 



0-927 

 1-236 



0-100 

 0-203 

 0-307 

 0-411 

 0-515 



Nature of channel. 



/^Trapezoidal; constructed 

 I with planks. Width at 

 J bottom 1 metre. Incli- 



nation of sides 4 5°. In- 



i clination of channel 

 ^ 0-0U15. 



(^Trapezoidal ; constructed 

 with planks. Width at 



1 bottom 0-945 metre ; 



J one of the sides inclined 

 at 45°, the other vertical. 

 Inclination of bottom of 

 channel 0-0049 metre 

 per metre. 



