ON THE FLOW OF WATER IN PIPES, CONDUITS, ETC. 



147 



Table II — Continued. 



103 

 104 

 105 

 106 

 107 

 108 

 109 

 110 

 111 

 112 

 113 

 114 

 115 

 116 

 117 

 118 

 119 

 120 

 121 

 122 

 123 

 124 

 125 

 126 

 127 

 128 

 129 

 130 

 131 

 132 

 133 

 134 



.35 

 .35 

 .34 

 .34 

 .33 

 .32 

 .31 

 .28 

 .34 

 .33 

 .33 

 .32 

 .31 

 .30 

 .28 

 .27 

 .31 

 .31 

 .31 

 .30 

 .29 

 .29 

 .27 

 .25 

 .30 

 .29 

 .29 

 .29 

 .28 

 .28 

 .27 

 .24 



.38 

 .36 

 .32 

 .31 

 .28 

 .27 



.37 

 .33 

 .31 

 .29 



.27 



14. To give a comparison of the type m^ with the type m^. Table III 

 consists of 23 experiments on glass pipes. The first six are by Weisbach as 

 given in the previous table; 7-10 on a f inch, 11-14 on a ^ inch glass 

 pipe by H. Smith, Jr., 15-19 by the same on a 1 inch glass pipe, all quoted 

 from Bowie's Hydraulic Mining; 20-23 are by Darcy on a 2 inch glass 

 pipe, H. & T., p. 135. Column V contains the observed velocity, column r 

 the observed mean hydraulic radius. Columns 100 mo and Co the observed 

 values of m and c respectively. Columns 100 m' and c' contain the com- 

 puted value of m from 



.012+--°'°°' 



(41) 



Vr 



l + .08y+ V8r 



