14 



TRANSPORTATION OF DEBRIS BY EUNNING WATER. 



Page. 



m ............... Exponent in 0=63(1 -<rR) .ft 1 *.... 129 



m, ............... Exponent; =m+l ............. 128,129 



n ............... Exponent in C=b t (S-o) ".... 61,64,96 



n, ............... Exponent in d=^ 



88 



o ............... Exponent in C=b a (Q-x) ....... 139 



p ............... Exponent in C=b t (F-<j>) p ...... 151 



p. e .............. Probable error .............. . ..... 89 



T. ............... Ratio of circumference of circle to 



diameter ..................... 21 



<j> ............... A constant linear fineness, corre- 



sponding to competent fineness. 151 



Q ............... Discharge (in ft. 3 /sec.) ............ 35 



R ................ Form ratio; djw .................. 36 



p ............... Value of R corresponding to maxi- 



mum capacity .................. 129 



5 ................ Slope, in per cent, of stream bed 



or water surface ................ 34 



a ...... . .......... Slope of stream bed or water 



surface; = fall per unit distance . 34 



Page. 

 a A constant slope, corresponding to 



competent slope 64 



Sum of 228 



T Time, aa a dimension of units. . . 139 



U. Duty of water (in gm./sec.) for 



traction of debris; capacity per 



unit discharge; C/Q 36 



V. Velocity of current (in ft. /sec.). . . . 163 



T' 6 Velocity of stream at contact with 



bed (Lechalas) 193 



Y m Mean velocity; discharge-Harea of 



cross section; Q/dw 33, 94, 155 



| ', Velocity of stream at surface 



(Lechalas) 194 



i> Variable coefficient in y=vx i 99 



r, Variable coefficient in C=v 1 S' 1 ... 99 



r 3 Variable coefficient in C=v 3 Q 3 . . . 141 



(/ Width of stream channel (in feet) . . 67 



